# When a tuning fork of unknown frequency is sounded simultaneously with a 512 Hz tuning fork, 20 beats are heard in 4.0 seconds. What are the possible frequencies of the unknown tuning fork?

7,356 questions, page 62
1. ## College physics-oscillations

A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume

asked by Marco on December 4, 2010

You are a marketing manager interviewing for a new job at several different firms simultaneously. You expect to be asked the same questions in each interview dealing with what you think are some good new marketing opportunities for each firm to pursue. You

asked by TASHA on August 11, 2013
3. ## physics

1.)A rock at the blank of a coast is struck by water waves.find the frequency of the waves striking the rock,if the distance between two consecutive crests or troughs is 100m.velocity of water wave is 150m/sec. 2.)the timeperiod of a vibrating body is

asked by srikar on May 18, 2012
4. ## Chemistry

You are approaching a stoplight. If the frequency of the light being emitted is approximately 520 THz, what was the wavelength of the light? What color was the light? v = c/λ 520 THz --> 5.2x10^14 Hz 5.2x10^14 Hz = 3.0x10^8 m/s λ = 1.56 x 10^23 m Not

asked by Anon on April 3, 2017
5. ## Maths

The number of goals that bully scores in each game is shown in the table below. Number of goals Frequency 0. 4. 1. 8 2. 5 3. 3 What was the modal amount of goals scored by billy? What is the mean amount of goals scored by billy?

asked by Anon on November 30, 2015
6. ## history

Why were hobos called what they were? After the stock market crashed what did people do with their stock? hobo 1889, Western Amer.Eng., of unknown origin, perhaps related to early 19c. Eng. dial. hawbuck "lout, clumsy fellow, country bumpkin." Or from ho,

asked by ben on March 9, 2007
7. ## physics

Need help on which formulas I use to solve problems? A coil of wire with 200 circular turns of radius 3.00 cm is in a uniform magnetic field along the axis of the coil. The coil has R = 40.0 ohms. At what rate, in teslas per second, must the magnetic field

asked by physicsclass on May 7, 2011
8. ## physics

A disk with mass m = 5.2 kg and radius R = 0.44 m hangs from a rope attached to the ceiling. The disk spins on its axis at a distance r = 1.59 m from the rope and at a frequency f = 18.6 rev/s (with a direction shown by the arrow). 1. What is the magnitude

asked by stewart on November 24, 2014
9. ## physics

Which of the following statements is not true about resonance? Choose one answer. a. It is easy to get an object to vibrate at its resonant frequencies but difficult to get it vibrate at other frequencies. b. A simple pendulum has many resonant frequencies

asked by ashley -- on April 30, 2011
10. ## Managerial ECON

The chief economist for Argus Corporation, a large appliance manufacturer, estimated the firm’s short- run cost function for vacuum cleaners using an average variable cost function of the form AVC = a + bQ + cQ2 where AVC dollars per vacuum cleaner and Q

asked by lost on November 6, 2011
11. ## Chemistry

Hi,can I have your help? I'm just trying to solve a few Dilution Solution problems. I'm stuck on these two,and I wish you could help. Here's one: A 500 mL bottle of concentrated acetic acid is diluted to make a 5.0% solution. Find the volume of diluted

asked by Cliff on December 8, 2010
12. ## physics 1

An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second

asked by Emily on December 23, 2015
13. ## Physics

An astronaut is stranded on another planet with UNKNOWN GRAVITY. He conducts two experiments. In the first, he drops a rock from a cliff and he finds that it takes the rock 4.15 seconds to reach the ground at the base of the cliff. In the second

asked by Emily on December 23, 2015
14. ## physics, doppler effect

"A source of sound of frequency f0 moves horizontally at constant speed u in the x direction at a distance h above the ground. An observer is situated on the ground at the point x=0 (the source passes over this point at t=0). Show that the signal received

asked by doppler effect on April 27, 2015
15. ## Physics

A ball of mass m is attached to a spring with a spring constant k. The system is attached to a thin vertical axis as shown in Figure 4. In its equilibrium vertical position the spring length is L. The axis starts to rotate with a constant angular frequency

asked by James on December 9, 2014
16. ## Math

A table shows the longest rivers in the world in miles.2341,2590,2718,2543,4160,2635,2734,3362,2744,2485,3395,2350,4000,3964,2600 thousands long.It has two questions.1. Choose an appropriate scale and interval size for a frequency table that will represent

asked by Kurstyn on January 10, 2012
17. ## statistics

I am trying to determine if the dice that I have is fair, so I will toss the dice 300 times and measure how many times each side appears. Here are my results: Side : Frequency 1 : 43 2 : 49 3 : 56 4 : 45 5 : 66 6 : 41 Looking at the data, is the dice

asked by Ms Lopez on March 3, 2019
18. ## AP Chemistry

To eject electrons from the surface of potassium metal, 222kJ/mol of electrons are needed. a) What minimum frequency of light is needed to supply the required energy? b) What is the wavelength of this light? c) If potassium is irradiated with light having

asked by qwerty123 on November 17, 2010
19. ## physics

A spring is stretched 5 × 10−2 m by a force of 5 × 10−4 N. A mass of 0.01 kg is placed on the lower end of the spring. After equilibrium has been reached, the upper end of the spring is moved up and down so that the external force acting on the mass

asked by swapnali on March 9, 2012
20. ## physics

a spring is stretched 5*10^2m by a force of 5*10^-4N.a mass of 0.001kg is placed on the lower end of the spring.after equilibrium has been reached, the upper end of the spring is moved up and down so that the external force acting on the mass is given by

asked by ashely on February 11, 2012
21. ## Physics

True or false 1. When a wave reaches the boundary of a new medium,part of the wave can be reflected and part of the wave can be transmitted into the new medium. 2. When a wave crosses a boundary between a thin and a thick rope its frequency changes, but

asked by Dove on November 23, 2014
22. ## Physics

Mass 1 with a unknown mass starts at rest at the top of a frictionless from a height of 13 meters. It then slides down the incline and moves over a horizontal frictionless surface and collides inelastically (head on) with mass 2 which is 25.4 kg and

asked by Jess on November 11, 2014
23. ## Chemistry

Consider a 1.0 L container of Neon gas at STP. Will the average kinetic energy, average velocity,and frequency of the collisions of gas molecules with the walls of the container increase, decrease, or remain the same under each of the following conditions?

asked by Elizabeth on February 24, 2017
24. ## Physics

The ship in the figure below travels along a straight line parallel to the shore and a distance d = 580 m from it. The ship's radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 700 m apart. The

asked by Jen on March 29, 2014
25. ## Physics help

You are watching a marching band practice outdoors. Near you are two trumpet players, one marching directly towards you and one away from you at the same speed. Each trumpet player is playing an A (440 Hz) and you hear a beat between the two sounds at a

26. ## Physics

the inclined plane is 30* from the ground a) What is the mechanical advantage of the inclined plane? b) A weight of 100N is to be lifted using the inclined plane. What is the minimum applied force for this job? c) Suppose that an applied force of 200N is

asked by lulu on January 21, 2009
27. ## physics

the inclined plane is 30* from the ground a) What is the mechanical advantage of the inclined plane? b) A weight of 100N is to be lifted using the inclined plane. What is the minimum applied force for this job? c) Suppose that an applied force of 200N is

asked by sasha on January 21, 2009
28. ## College physics-oscillations

A ball is attached by two spring as shown [vvvOvvv]. If the mass is displaced a distance â–³x BELOW the equilibrium position h (see figure A). Determine whether vertical SHM is possible for the system shown.If so, find the natural frequency. [Assume

asked by Marco on December 4, 2010
29. ## Physics

3. An astronaut lands on an alien planet. He places a pendulum (L = 0.200 m) on the surface and sets it in simple harmonic motion, as shown in this graph. Answer the following questions: a. What is the period and frequency of the pendulum’s motion? b.

asked by Matt Damen on January 31, 2013
30. ## Chemistry

The bond energy of the O2 molecule is 495. a) calculate the minimum frequency and max wavelength of light required to break this bond. b) how many photons of this wavelength would it take in order to break open the bonds of all the oxygen molecules in a

asked by Karen on November 7, 2007
31. ## Physics

A block of mass m1 is on top of a block of mass m2. Block 2 is connected by an ideal rope passing through a pulley to a block of unknown mass m3 as shown. The pulley is massless and frictionless. There is friction between block 1 and 2 and between the

asked by Rose on June 23, 2013
32. ## AP Physics

Hi! I'm supposed to derive an algebraic formula to solve for the acceleration using one of the linear kinematics formulas of an elevator with a person inside that begins to accelerate from rest moving downward. If it travels a know distance, d, in reaching

asked by Margaret on March 30, 2018
33. ## Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 580.0 kHz. When the search coil (inductor B) is brought

asked by Anonymous on April 11, 2013
34. ## phy 231

Tall buildings are flexible and undergo simple harmonic motion (SMH) when excited by wind. Suppose the top floor of a skyscraper is in SMH, swaying back and forth with a frequency of 0.181 Hz and an amplitude of 1.5 m. a.What is the maximum speed

asked by Andrea on March 8, 2016
35. ## Physics

In the absence of a nearby metal object, the two inductances (LA and LB) in a heterodyne metal detector are the same, and the resonant frequencies of the two oscillator circuits have the same value of 510.0 kHz. When the search coil (inductor B) is brought

asked by Elizabeth on March 21, 2013
36. ## chemistry

1- A compound is 87.5% nitrogen and 12.5% hydrogen. The molecular weight of the compound is 32 g/mol. Describe the molecule referencing shape, and inter-molecular forces. 2- Gaseous butadiene, C4H6 , reacts with hydrogen gas in the presence of a platinum

asked by Katie on January 6, 2014
37. ## college math

given the bar graph below create a grouped frequency distribution. the graph is numbered up the side by twos to 22, along the bottom there are countries that go up to a number. united states up to 10 argentina up to 22 united kingdom up to just under the

asked by jessica on September 6, 2011
38. ## chemistry

a) calculate the concentration of your unknown (Gatorade) using correct units Note if you did not run the Gatorade use absorbance =0.205 abs units in order to calculate the concentration of the dye in the Gatorade b) calculate of % T for an absorbance of

asked by mathew on March 15, 2015
39. ## math

Problem The latent heat of fusion (solid become liquid) for ice is 79.8 cal/gram. How much ice can we melt with 1000 calories of heat? Problem Which would require more heat, melting 500 g of 0 C ice or turning 500 g of 100 C water into steam? Problem A 500

asked by sherri on October 6, 2008
40. ## Physics

A bath toy is floating stationary in water such that half of the toy is above water and half of the toy is below the water. A kid pulls the toy 3.9 cm down into the water and then lets go. The toy then proceeds to bob up and down. It bobs up and down 26

asked by Anonymous on January 10, 2015
41. ## Physics

To reduce the frequency of a particle when it behaves like a wave, we need to ... -Increase its mass -Reduce its speed -Increase its speed -Hit it with low energy photons -Hit it with high energy photons Does the same wave theory apply? i.e. V = f(lambda)

asked by Kat on April 4, 2010
42. ## Math

type of cookies|adults|children chocolate chip | 5 | 10 peanut butter | 8 | 6 oatmeal | 7 | 4 16. Based on the two way frequency table how many people chose chocolate chip cookies A. 20 B. 15 C. 14 D. 11 17. What percentage of the adults chose peanut

asked by bunny64 on April 6, 2016
43. ## CHEMISTRY

A is a solution of trioxonitate acid of an unknown concentration, B is a standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion of solution B require an average of 24cm3 of solution A for complete neutralization. Write a

asked by Arowolo on July 11, 2018
44. ## CHEMISTRY

A is a solution of trioxonitate acid of an unknown concentration, B is a standard solution of sodium hydroxide containing 4.00g per dm3 of solution 25cm3 portion of solution B require an average of 24cm3 of solution A for complete neutralization. Write a

asked by AROWOLO TEMITOPE on July 11, 2018
45. ## Physics

The ship in Figure P14.35 travels along a straight line parallel to the shore and a distance d = 500 m from it. The ship’s radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 800 m. The signals

asked by Steve on February 28, 2013
46. ## ap biology

we are looking at the Hardy weinberg equilibrium theory and we were given fifty problems to work over the break and even though i have answered most of them there is one that has be taken a long time because I am not sure if it can be solved. here is the

asked by claudia on January 4, 2008
47. ## Physics

The ship in Figure P14.35 travels along a straight line parallel to the shore and a distance d = 500 m from it. The ship’s radio receives simultaneous signals of the same frequency from antennas A and B, separated by a distance L = 800 m. The signals

asked by Steve on February 28, 2013
48. ## science

Calculate the PRP, PRF, PD, DF, SPL, wavelength, period, and Axial Resolution if a 2 cycle pulse emitted from a 10 MHz transducer if the echo time received was 0.26 ms in soft tissue. Part II - Using the information above: 1. If the PRF decreases what

asked by elizabeth on November 3, 2014
49. ## Orgo chem

I have to find the boiling point of an unknown from a distillation experiment. The boiling ranges from 88.0 degrees Celsius to 94 degrees Celsius How can you find the boiling point when the points are graphed? Three of the points are the same (94 degrees)

asked by Taylor on October 26, 2009

hope: O.E. hopian "wish, expect, look forward (to something)," of unknown origin, a general Low Ger. word (cf. O.Fris. hopia, M.L.G., M.Du. hopen; M.H.G. hoffen "to hope" was borrowed from Low Ger. Some suggest a connection with hop (v.) on the notion of

asked by Anonymous on April 6, 2008
51. ## BUSSINESS STATISTICS

Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean

asked by JULIET on May 6, 2012
52. ## statistics

Consider the average available for all hotel rooms from the previous assignment. Identify the point estimate of the average number of available hotel rooms in this lesson from each sample. Construct and Interpret a 95% confidence level for the true mean

asked by tom on August 2, 2011
53. ## physics

A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision the first cart continues in its original direction at

asked by Chris on March 3, 2007
54. ## Chemistry

A sample of unknown metal has a mass of 36.7 g. This metal was placed in boiling water at 96.0oC until the metal had reached the temperature of the water. The metal was then placed in a foam cup with 50.0 g of water in it at 20.0oC. The cup absorbs 42.0

asked by katie on November 10, 2013
55. ## chemistry

unknown element X combines with oxygen to form the compund XO2. If 44.0 grams of element X combines with 8.00 grams of oxygen, what is the atomic mass of element X? X + O2 ==> XO2 8.00 g x (1 mol O2/32 g O2) = 0.25 mol O2. 44.0 g element X must represent

asked by alexa on April 29, 2007
56. ## physics

A harmonic wave with a frequency of 90 Hz and an amplitude of 0.025 m travels along a string to the right with a speed of 20 m/s. a)Write a suitable sine wave function for this wave in terms of x and t. b) Find the maximum speed of a point on the string.

asked by joy on April 25, 2018
57. ## Chemistry

Indicate how each of the following would affect the value of the absorbance (too high, too low, or not effect) of the indicated solution. I really need help. I do not understand these questions! This is from a chemistry activity to determine the unknown

asked by Sharon on February 28, 2012
58. ## physics

A small source O of electromagnetic waves is placed some distance from a plane metal reflector M. A receiver R, moving between O and M along the line normal to the reflector, detects successive maximum and minimum readings on the meter joined to it. (a)

asked by Edwin on March 26, 2010
59. ## Physics

Three objects are connceted by a massless wires over a frictionless pulley. The right side of the pulley wire is connected to a 15kg block and right below that is a 10kg block on the bottom of the wire. The tension in the wire connecting the 10kg and 15kg

asked by Alex on April 30, 2016
60. ## statistics

30. The probability that a person can get infected with a rare type of blood disorder is very small. Suppose that a blood test performed on 10,000 people showed that two persons tested positive that is, a 0.02% chance of getting this type of blood

asked by meri on June 30, 2015
61. ## physics

a fisherman noticed that his boat was lifted by the wter waves about once evry two seconds. He looked at the waves wnd estimated the length of a wave to be a 6cm. He also estimated the vertical distance between the highest point snd the lowest point of the

asked by patris on December 9, 2014
62. ## Chemistry

1. A graduate measured out a 100. mL hard water sample and titrated it with 37.6 mL of 0.0100 M EDTA solution for a total hardness endpoint, and 29.3 mL of 0.0100 M EDTA solution for a calcium endpoint. Calculate the molarity with respect to magnesium and

63. ## physics

A guitar string 75.0cm in length is strung to play the note C at a frequency of 880Hz as it 3rd harmonic. a.) what is the length of the transverse wave on the guitar string? b) what is the speed of this transverse wave along the guitar string? c.) what is

asked by sand on December 26, 2011
64. ## Physics

A box of unknown mass is sliding with an initial speed vi = 5.40 m/s across a horizontal friction-less warehouse floor when it encounters a rough section of flooring d = 3.50 m long. The coefficient of kinetic friction between the rough section of flooring

asked by Anonymous on December 17, 2015
65. ## Chemistry

Suppose that 0.483 g of an unknown monoprotic weak acid, HA, is dissolved in water. Titration of the solution with 0.250 M NaOH(aq) required 42.0 mL to reach the stoichiometric point. After the addition of 21.0 mL, the pH of the solution was found to be

asked by Val on March 12, 2010
66. ## Chemistry

The vapor pressure of an unknown substance is given at various temperatures. properties of the substance are: density of solid=1.375g/ml density of liquid= 1.150g/ml. freezing point= 275.0K boiling point=375.0 K How would i calculate the vapor pressure at

67. ## Physics

Consider a map oriented so that the x-axis runs east-west (with east being the "positive" direction) and y runs north-south (with north "positive"). A person drives 23 km to the north, turns and drives 76 km to the east, and then turns north and drives for

asked by Pat on September 11, 2014
68. ## Chemistry

An unknown metal with a mass of 260 g has a heat capacity of 100 J/oC. What is the specific heat of the metal? I am stuck finding the right equation, knowing that the mass is 260 g and heat is 100 J per Celsius. Thus, going with the equation, q=msT, the

asked by Jeremy on November 22, 2014
69. ## math *IMPORTANT

HENRY PROGRAMMED A CALCULATOR TO RANDOMLY DISPLAY A DIGIT FROM 0 THROUGH 9. THE RESULTS OF THE FIRST 50 DISPLAYS ARE SHOWN ON THE TABLE BELOW. WHAT IS THE POSITIVE DIFFERENCE BETWEEN THE THEORETICAL PROBABILITY AND EXPERIMENTAL PROBABILITY FOR GETTING A 9

asked by DEREK on September 10, 2012
70. ## Pre algebra

1.)Use an equation to solve the problem. What is 57% of 11? A. 11 = 0.57 • n; 19.3 B. n = 57 • 11; 627 C. n = 0.57 • 11; 6.27**** D. 11 = 57 • n; 0.19 2.) 224 is 25% of what number? A. 224 • 0.25 = w; 560 B. 224 = 0.25 • w; 896**** C. 224 •

asked by savageontherun on November 27, 2018
71. ## Chemistry

A 20.00 mL sample of a .1000M unknown acid solution is titrated with .1000M NaOH. Given that the acid is diprotic and its pKa's are 1.90 and 6.70 a.) Estimate the pH after 10 mL of base are added b.) estimate the pH after 20 mL of base are added c.)

asked by lawerence on March 22, 2015
72. ## math

Jane is taking a class and asks you to help her figure out what her last grade must be in the class to get a 85 in the class. She tells you the following calculation is used to find your final grade: 75+85+90+X ----------- > or = to 85 4 x is her last

asked by Jennifer on November 29, 2011
73. ## Chemistry

1. Consider the conductance meter and the titration method of determining the salt content of a brine sample. Discuss at least two advantages and two disadvantages of each method. 2. A corrosion technologist pipetted a 50.00 mL sample of an unknown brine

asked by Shannon on July 1, 2011
74. ## Science

Im sorry i am totally stumped What is the main difference between mechanical and electromagnetic waves A. Mechanical waves involve the transfer of energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves

asked by help me on April 27, 2016
75. ## Physics

A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released.

asked by me on December 9, 2011
76. ## physics

A pendulum consists of a massless rigid rod with a mass at one end. The other end is pivoted on a frictionless pivot so that it can turn through a complete circle. The pendulum is inverted, so the mass is directly above the pivot point, and then released.

asked by me on December 9, 2011

Earth turns on its axis approximately once every 24 hours. The radius of Earth is 6.38 X 10^6 m. a.) If some astronomical catastrophe suddenly brought Earth to a screeching halt (a physical impossibility as far as we know), with what speed would Earth's

asked by rory on December 9, 2008
78. ## Chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by Kayla on December 1, 2010
79. ## chemistry

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by Dawn on December 2, 2010
80. ## chem

The element X has an atomic mass of 12.80 amu. It is known to have two isotopes 12X and 13X. Which of the following is true about the relative abundancies of 12X and 13X? a) both isotopes occur with the same frequency. b)12X occurs more frequently than 13X

asked by nicki on December 1, 2010
81. ## physic

the light from a helium neon laser has a wavelength of 632 nanometers in air. the same light has a wavelength of 479.2 in glass. the frequency of the light is the same in air and glass. find the speed of the laser light in glass.

asked by gerl on August 31, 2016
82. ## physics

An organ pipe is open at both ends. It is producing sound at its sixth harmonic, the frequency of which is 257 Hz. The speed of sound is 343 m/s. What is the length of the pipe The open pipe has to be of length lambda/2, and odd number. Fundamental L=

asked by Coreen on May 1, 2007
83. ## English

Which one of the following statements about writing business letters is True? a. If you forget one of the crucial points of your letter, provide the information in a postscript. b. "Respectfully yours" is usually the most appropriate complimentary close

asked by Kay on August 7, 2007
84. ## Physics

A 19.5 gram, 56.3 centimeter long steel guitar string is vibrating in its fourth harmonic.  It induces a standing wave in a nearby 48.6 centimeter metal pipe open at one end.  The standing sound wave in the pipe corresponds to the pipe's fundamental

asked by Alphonse on November 23, 2012
85. ## Accounts

The following transactions occurred during June for Campus Cycle Shop. Record the transactions below in the T accounts. Place the letter of the transaction next to the entry. Foot and calculate the ending balances of the T accounts where appropriate. a.

asked by Angela on July 19, 2018
86. ## physics

String instrument players can tune one string off of another - once you are happy with the tension and resulting pitch in one lower string, you put your finger down partway up the first string at the appropriate spot to make a higher pitch, one which

asked by Student in Need on March 3, 2011
87. ## ap chemistry

please explain titration problems. I'm a total noob at this and am trying to answer some prelab questions. Examples: 1. How many mL of a 0.800 M NaOH solution is needed to just neutralize 40 mL of a 0.600 M HCl solution? 2. You wish to determine the

asked by chris on October 2, 2008
88. ## Science

What is the main difference between mechanical and electromagnetic waves? A. Mechanical weaves involved transfers energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do not***** C. mechanical waves

asked by I need help on March 13, 2017
89. ## physics questions

1. The batteries in a digital alarm clock provide a terminal voltage of 9 V. What is the potential difference across the entire clock current? A. 4.5 V B. 18.0 V C. 9.0 V D. 6.0 V **C is my answer 2. Why does the earth have a magnetic declination? a. the

asked by nnd on May 11, 2015
90. ## math

I am taking a job related test consisting of several math sections. I have been out of school for quite some time and am looking to find the easiest place to get tips and tutorials to solve these questions. The topics are as follows: multiplication and

asked by jay on September 3, 2011
91. ## Physics

Indicate true or false in each of the following statements: 1. a tube open at one end resonates with only odd harmonics 2. The frequency of a sound emitted by a vehicle as it moves toward you rises as you listen 3. a tube open at both ends resonates with

asked by Katie on May 8, 2008
92. ## physics spring

A glider on an air track is connected by springs to either end of the track. Both springs have the same spring constant,k , and the glider has mass M. A)Determine the frequency of the oscillation, assuming no damping, if k= 125N/m and M= 250g. (I got the

asked by annie on May 21, 2009
93. ## Physics

Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain. Tension, mass density and the length of our vocal cords differ so would that be the reason why they sound different? For instance: a child's voice is usually

asked by Andrea on March 1, 2008
94. ## physics

A 2.0 kg block is attached to the end of a spring with a spring constant of 350 N/m and forced to oscillate by an applied force F = (15 N)sin(ωt),where ω = 35 rad/s. The damping constant is b = 15 kg/s. At t = 0,the block is at rest with the spring at

asked by Sandhya on April 24, 2009
95. ## physics134

A ball, with a mass of 0.144 kg, is thrown from the top of a 76.8 m building (point A) at an angle, θ = 65º with respect to the horizontal. The initial speed of the ball is unknown. The ball reaches a maximum height of 12 m above the building after which

asked by Anonymous on May 4, 2013
96. ## Physics

A projectile, fired with unknown initial velocity, lands 18.4 s later on the side of a hill, 2740 m away horizontally and 469 m vertically above its starting point. (Ignore any effects due to air resistance.) (a) What is the vertical component of its

asked by Anonymous on December 4, 2014
97. ## Physics

Suppose you have a string that is being made to vibrate at a specific frequency, f. The speed of waves on the string is v. The length of the string that is vibrating, L, is adjustable. When the length of the string has been adjusted so that the fundamental

asked by Anna on June 4, 2015
98. ## Chemistry

A Be3+ ion absorbs a photon with a frequency of 7.31 × 1015 Hz. If the energy of the final state of the Be3+ ion was -3.88 × 10(-18) J, calculate the energy of the initial state. Express answer in scientific notation. My work so far: delta E = (h)(v)

asked by Kyle on January 30, 2012
99. ## Physics

Moe, Larry, and Curly stand in a line with a spacing of d = 1.40m . Larry is 3.00m in front of a pair of stereo speakers 0.800m apart, as shown in the figure(Figure 1) . The speakers produce a single-frequency tone, vibrating in phase with each other. What

asked by Lhaedy on December 11, 2013
100. ## Engineering Physics

A 1.0-kg block is released from rest at the top of a frictionless incline that makes and angle of 37 degrees with the horizontal. An unknown distance down the incline from the point of release, there is a spring with k=200 N/m. It is observed that the mass

asked by M on February 24, 2011