# The speed (v) of an ocean wave depends on its wavelength ë (measured in meters) and the gravitational field strength g (measured in m/s62) according to the formula v = Këˣgʸ where K is a dimensionless constant. Find the value

43,115 questions, page 204
1. ## Physics

You've made the finals of the Science Olympics! As one of your tasks, you're given 1.8g of copper and asked to make a wire, using all the metal, with a resistance of 1.3 Ohm. Copper has a density of 8900 kg/m^3. What length will you choose for your wire(in

asked by Anthony on February 17, 2010
2. ## math

A guy wire is attached to the top of a radio antenna and to a point on horizontal ground that is 50.0 meters from the base of the antenna. If the wire makes an angle of 59°30' with the ground, approximate the length l of the wire. (Round your answer to

asked by Anonymous on September 23, 2015
3. ## physics helpppp

particle 1 of mass m1 = 0.29 kg slides rightward along an x axis on a frictionless floor with a speed of 1.8 m/s. When it reaches x = 0, it undergoes a one-dimensional elastic collision with stationary particle 2 of mass m2 = 0.40 kg. When particle 2 then

asked by Anonymous on March 30, 2010
4. ## Algebra!

Two cars leave town going opposite directions. One car is traveling 55 mph, and the other is traveling 65 mph How long will it take before they are 180 miles apart? Hint: The time for both cars is the same and can be represented by "t." The total distance

asked by Margie!! on November 14, 2006
5. ## physics

The aorta carries blood away from the heart at a speed of about 43 cm/s and has a radius of approximately 1.1 cm. The aorta branches eventually into a large number of tiny capillaries that distribute the blood to the various body organs. In a capillary,

asked by archer on August 28, 2015
6. ## physics

Ben (55 kg) is standing on very slippery ice when Junior (25 kg) bumps into him. Junior was moving at a speed of 8 m/s before the collision and Ben and Junior embrace after the collision. Find the speed of Ben and Junior as they move across the ice after

asked by samae on April 26, 2019
7. ## Math

A small plane flying into the wind takes 3h 20 min to complete a flight of 960 km.Flying with the wind, the same plane takes 2h 30 min to make the trip. What is the speed of the plane? What is the speed of the wind?

asked by gagan on January 22, 2009
8. ## algebra 2

During the first part of a trip a canoeist travels 26 miles at a certain speed. The canoeist travels 8 miles on the second part of the trip at a speed 5 mph slower. Total time is 3 hours. What was the seed on each part of the trip

asked by bob on April 21, 2013
9. ## physics

In many countries, automatic number plate recognition is used to catch speeders. The system takes a time-stamped license plate photo at one location (like an on-ramp to a freeway), and then takes a second time-stamped photo at a second location a known

asked by Natasha on September 1, 2012
10. ## antigone

In Ode 2 to what does the Chorus compare Antigone? a. a cresting wave b. a soaring bird c. a glowing ember d. a closed flower C The Chorus in Ode 3 comments on the a. power of love b. duty of sons to their fathers c. relationship of Haimon and Antigone d.

asked by y912f on July 2, 2009
11. ## Math

A heated piece of metal cools according to the function c(x)=(.5)^(x−9), where x is measured in hours. A device is added that aids in cooling according to the function h(x)=−x−2. What will be the temperature of the metal after five hours? -7 Degrees

12. ## Math

A heated piece of metal cools according to the function c(x)=(.5)^(x−9), where x is measured in hours. A device is added that aids in cooling according to the function h(x)=−x−2. What will be the temperature of the metal after five hours? -7 Degrees

A Cesium 137 sample has a measured radioactivity of 50 microcuries.Cesium 137 has a half-life of 30 years. How long will it take this sample to be reduced to a residual radioactivity of 6.25 microcuries? Is there a formula to calculate half life?

asked by Mary on February 9, 2008
14. ## math

The runway of an airfield faces west. An airplane, flying in the direction of north-east at a height of 2km and at a speed of 400km/h, on a path which passes over a point 3km west of the runway end, is spotted sqrt(29)km horizontally(south-western

asked by Jainee on November 20, 2011
15. ## trig

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this

asked by Jasmine on February 6, 2014
16. ## PHYSICS

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt

asked by TRACY on February 28, 2012
17. ## algebra

The area of a rectangular athletic field is represented by the expression 81y^2-16z^2 square meters. Write an algebraic expression to represent one possible set of dimensions(in the sense " length times width") of the athletic field. Include correct units

asked by ROCKY on July 24, 2011
18. ## trig

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this

asked by Jasmine on February 6, 2014
19. ## physics

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt

asked by TRACY on February 27, 2012
20. ## Technical Math (College)

Question: The formula s=4.90t^2 gives the distance s in meters that a body falls in a given time t. Find the distance a ball drops in 4.2 seconds. Use the rules for multiplication of measurements in evaluating the answer.

asked by Shelly on January 20, 2016
21. ## Physics

A 7 kilogram bowling ball is dropped from a fourth story window. If each story is 3 meters high, use energy conservation (not the equations of motion) to find the ball's velocity when it strikes the ground. Ignore air resistance. 1/2 m v^2= mgh v= sqrt

asked by TRACY on February 26, 2012
22. ## algebra

The area of a rectangle athletic field is represented by the expression 12y^3+48^2+24y sqaure meters. write an algebraic expression to represent one possible set of dimensions (in the same sense ''length times width'') of the athletic field. include the

asked by Liz on February 11, 2011
23. ## Math

If you could check these I would be very greatful. Thank you! which of the following could be represented by -8? A. a drop of 8 meters *** B. 8 T-shirts C. sea level in 8 places of the world D. 8 degrees C above zero compare, use . 5+(-4) ____ 14+(-7) A. =

asked by erinnn on May 23, 2019
24. ## Math

A farmer plans to enclose a rectangular pasture adjacent to a river. (see figure). The pasture must contain 320,000 square meters in order to provide enough grass for the herd. What dimensions will require the least amount of fencing if no fencing is

asked by Malika on March 4, 2012
25. ## Physics

A truck of 5000kg hits a car of 1500kg at an intersection. After the collision, both vehicles remained glued together and slid over a distance of 30 meters before coming to a halt. Knowing that the coefficient of kinetic friction between both vehicles and

asked by Raf on February 4, 2012
26. ## physics

You are to make four straight-line moves over a flat desert floor, starting at the origin of an xy coordinate system and ending at the xy coordinates (-148 m, 66 m). The x component and y component of your moves are the following, respectively, in meters:

asked by kristy on September 12, 2013
27. ## calculus

Farmer Jones has 210 meters of fence. She wishes to construct a rectangular pen using the river as one side and dividing the pen into six separate rectangular pens as shown. What should the dimensions of the combined pens be to maximize the area enclosed?

asked by Anonymous on May 14, 2013
28. ## algebra

The area of a rectangular athletic field is represented by the expression 16y²-49z² square meters. Write an algebraic expression to represent one possible set of dimensions (in the sense “length times width”) of the athletic field. Include correct

asked by cal on June 12, 2011
29. ## geometry

An advertising blimps hovers over stadium at the altitude of 152 m.the pilot sites a tennis court at in 80 degree angle of depression. Find the ground distance in the straight line between the stadium and the tennis court. (note: in an exercise like this

asked by Jasmine on February 6, 2014
30. ## physics

A truck of 5000kg hits a car of 1500kg at an intersection. After the collision, both vehicles remained glued together and slid over a distance of 30 meters before coming to a halt. Knowing that the coefficient of kinetic friction between both vehicles and

asked by Raf on February 5, 2012
31. ## Mechanics (M1) A level?

A block moves on a rough slope of length 10 m inclined at 30 degrees to the horizontal. The coefficiebt of friction between the block and the slope is 0.4. The block starts from rest at the top of the slope. a) Find the speed at which the block reaches the

asked by Jat on April 29, 2012
32. ## Physics

A ball is tossed straight up from the surface of a small spherical asteroid with no atmosphere. The ball goes to a height ewual to the asteroid's radius and then falls straight down towardd the surface of the asteroid. What forces if any act on the ball

asked by Tammy on March 26, 2007
33. ## Physics

Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic?

asked by Mary on March 27, 2011
34. ## Physics

Initially, mass one (2.10 kg) has a velocity of 5.90 m/s and mass two (2.80 kg) is at rest. After they collide, mass one emerges at an angle theta = 33.0 degrees. What is the speed of mass one after the collision if the collision is completely elastic?

asked by Mary on March 27, 2011
35. ## Algebra 2

1. Plane A is 40 mi south and 100 mi east of Plane B. Plane A is flying 2 miles west for every mile it flies north, while Plane B is flying 3 mi east for every mile it flies south. a. Where do their paths cross? b. Which plane must fly farther? c. What

asked by newt on September 28, 2009

Plane A is 40 mi south and 100 mi east of Plane B. Plane A is flying 2 miles west for every mile it flies north, while Plane B is flying 3 mi east for every mile it flies south. a. Where do their paths cross? b. Which plane must fly farther? c. What ratio

asked by newt on September 28, 2009
37. ## Math

Plane A is 40 mi south and 100 mi east of Plane B. Plane A is flying 2 miles west for every mile it flies north, while Plane B is flying 3 mi east for every mile it flies south. a. Where do their paths cross? b. Which plane must fly farther? c. What ratio

asked by newt on September 28, 2009
38. ## Math

Please help me! I don't even know where to start :( my teacher took this question up on friday but i was sick, and we have a test tomorrow! -Car A travels from Barrie to Subuiry at an average speed of 90km/h -Car B travels from Subury to Barrie at an

asked by Dawn on March 7, 2010
39. ## Physics

Electrons in a narrow beam travelling at a steady speed of 5 x 10^7 ms^-1 are directed into the space between two oppositely charged parallel plates 50mm apart. The potential difference between the plates is 2500V. The initial direction of the beam is

asked by Ben on February 17, 2016
40. ## maths

A sample of 25users of a gym had their oxygen consumption measured for 30 minutes after arunning exercise.The sample mean and sample standard deviation of the oxygen consumption,in millilitres per kilogram of body weight per minute, were 24.1 and 18.7,

asked by olek on May 8, 2011
41. ## Geometry

To find the height of a flagpole Kasey measured her own shadow and the flagpoles shadow. KAsy's height is 5ft 4 inches. The shadow of the flagpole was 14ft and 3 inches and her shadow was exactly 3 ft. What is the height of the flagpole

asked by Anonymous on January 19, 2016
42. ## chemistry

A 33.8 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 20.7 g. What was the mass of iron in the sample of ore?

asked by Nick on August 30, 2012
43. ## chemistry

When a photon of light hits the surface of a metal, a photoelectron may be emitted. Some of the photon's energy is required to free the electron from the surface. The remaining energy becomes the kinetic energy of the photoelectron. The minimum energy for

asked by Kristen on October 21, 2013
44. ## Science

PLEASE HELP 1. Katie is bowling. She starts with the ball in her right hand and her arm as far back as it will go. She swings the ball forward, applying a force of 78 Newtons the whole time. When her hand has traveled through a path of 0.9 meters, she

asked by Alex on April 4, 2016
45. ## physics

a 1.5-kg object moves up the y-axis at a constant speed. When it reaches the origin,the forces F1 =5.0 N at 37 deg above the the + x-axis, F2 = 2.5 N in the +x-direction, F3 = 3.5 N at 45 deg below the -x-axis, and F4 = 1.5 N in the -y direction are

asked by melissa on January 17, 2008
46. ## Calculus II

I'm having trouble getting started. Steve said it's similar to another question I asked but I don't know how to begin. Any help? Suppose a cell of volume V cc is surrounded by a homogeneous chemical solution of concentration C g/cc. Let y denote the

asked by Catherine on October 8, 2017
47. ## Physics - HELP PLS

A small dipole of length l with an input current Io radiates an electromagnetic wave that is TEM respect r with an electric field given by: E = j*w*Î¼*(1/2)*(Io*l/(4*pi))*e^(-jkr)/r * sinÎ¸ Find the expression of the magnetic field, the Poynting

asked by Waves - AEC on March 11, 2018
48. ## Physics

The x component of vector A is -25 m and the y component is 40m a) what is the magnitude of vector A b)What is the angle between the direction of vector A and the positive direction of x? I got a) as 47.16m by for b) I am having trouble I should be getting

asked by jenny on September 27, 2006
49. ## college physics 2

A healthy astronaut's heart rate is 60 beats/min. Flight doctors on Earth can monitor an astronaut's vital signs remotely while in flight. How fast would an astronaut be flying away from Earth if the doctor measured her having a heart rate of 28 beats/min?

asked by Anonymous on March 31, 2014
50. ## Calculus

Water flows into a tank according to the rate F of t equals the quotient of 6 plus t and the quantity 1 plus t , and at the same time empties out at the rate E of t equals the quotient of the natural log of the quantity t plus 2 and the quantity t plus 1 ,

asked by Gibson on May 5, 2018
51. ## utah state history

Please help Fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of

asked by isabella on April 21, 2016
52. ## utah state history

fill in the blank 1.The (blank) settlers were the first ones to develop agricultural practices that were adapted to the arid west. 2.The invention of the (blank) made it possible for farmers to farm much bigger plots of land. 3.The practice of (blank) made

asked by isabella on April 13, 2016
53. ## Physics

In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straight-away at 67.5 m/s. The driver of the Thunderbird realizes he must make a pit stop, and he smoothly slows to a stop over a distance of 250 m. He

asked by Jerry on January 23, 2015
54. ## physics

In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straight-away at 66.5 m/s. The driver of the Thunderbird realizes that she must make a pit stop, and she smoothly slows to a stop over a distance of 250 m.

asked by sarah on January 21, 2012
55. ## Statistics

The table below gives the ages and systolic blood pressure (measured in millimeters of mercury) of 9 randomly selected adults. Subject # 1 2 3 4 5 6 7 8 9 Age, x 41 44 48 51 54 56 60 64 68 Pressure, y 111 115 118 126 137 140 143 145 147 Part 1: Calculate

asked by Jackie on October 22, 2009

true or false questions: a)The derivatives of the reciprocal trigonometric functions can be found using the chain rule and their related base functions. b) A sinusoidal function can be differentiated only if the independent variable is measured in radians.

asked by Tina on October 31, 2014
57. ## Physics

A weight of 15 N is located at a distance of 2.5 meters from the fulcrum of a simple lever. At what distance from the fulcrum should a weight of 20.0 N be placed on the opposite side of the fulcrum to balance the system?

asked by mssailormouth on June 30, 2019
58. ## Physics

A force of 3.00 N acts through a distance of 12 m in the direction of the force.Find the work done. If I recall correctly, work=force*distance. The units should be newton-meters. 3*12=36

asked by fluffy on September 9, 2006
59. ## Physics

an athlete is attempting to jump over a bar that is 1.5 meters in the air what is the lowest initial velocity that the athlete must jump with in order to successfully jump over the bar

asked by Urvi on October 14, 2014

Can you help? 1. Choose the best estimate for the length of a bottle of glue. a. 15 millimeters b. 15 centimeters c. 15 meters d. 15 kilometers I know it's not c or d. So, i think it is a - 15 millimeters because length of 15 centimeters (length of

asked by Jared on May 8, 2017
61. ## ipc

30 cubic meters of argon gas are kept under constant pressure. The gas is heated from 10.0 degrees Celsius to 293 degrees Celsius. What is the new volume of the gas?

asked by Anonymous on November 10, 2015
62. ## Math

Ashley needs 4.6 yards of chain to hang some flower baskets. The chain is sold by the meter. She knows that 1 yard=0.914 meter. How many meters of chain does Ashley need?

asked by Melissa on February 15, 2018
63. ## physcial science

a 50 kg crate is lifted to a height of 10 meters. a. how much potential energy does the crate have after being lifted? b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?

asked by jake on February 11, 2008
64. ## science

30 cubic meters of argon gas are kept under constant pressure. The gas is heated from 10.0 degrees Celsius to 293 degrees Celsius. What is the new volume of the gas?

asked by tyler on March 18, 2014
65. ## science

A stone is dropped from a balloon going up with a uniform velocity of 5.0 m/s. If the balloon was 50 m high when the stone was dropped, find its height (in meters) when the stone hits the ground. Take g = 10 m/s2 (A) 50 (B) 58 (C) 68 (D) 78.5

asked by sam on February 3, 2017
66. ## English II

1. Explain the difference between a mystery and a legend. 2. Create a list of at least five (5) of these proven and unproven beliefs about your chosen event. 3. Explain why each of the items in the list are proven or unproven. 1. A mystery is something

asked by Sue on August 16, 2016
67. ## physics

A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,000 rev/min. (a) Find

asked by monic on November 30, 2012
68. ## physics

A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 1.00 m and a mass of 600 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up to 4,000 rev/min. (a) Find

asked by heather on December 2, 2012
69. ## physics

hi,need help please.thank. A car is designed to get its energy from a rotating flywheel (solid disk) with a radius of 2.00 m and a mass of 525 kg. Before a trip, the flywheel is attached to an electric motor, which brings the flywheel's rotational speed up

asked by Chan on November 22, 2009
70. ## Chemistry (Check)

classify each of these statements as always true, sometimes true, or never true. __ST___11)The unit of a conversion factor must cancel. __AT___12)the conversion factor for changing grams and milligrams is 1g/1000mg ___ST__13)multiple conversions factors

asked by Bryan on January 23, 2007

Hello, I don't know how about to answering this question: work out the problem of a ball of mass m that falls a distance h from rest. It hits the floor and rebounds to its starting height. (a) What total time ie required for the motion? (Neglect the time

asked by amber on October 31, 2006
72. ## AP Physics 1 Momentum

I have a select-multiple question, and I am not sure about everything and I only get one try in my online class...would really appreciate if you could please explain which to select: What is true about momentum value? a)When you muliply mass (a scalar) by

asked by Anonymous on August 28, 2017
73. ## CIS 115

I need help with the visual logic flowchart for the following problem: A local deli sells lunch value meals that consist of a sandwich, soup and a drink. The price of each meal depends on the actual items ordered. Write a program that asks the cashier to

asked by Thermonf on October 8, 2011

Write the integral in one variable to find the volume of the solid obtained by rotating the first‐quadrant region bounded by y = 0.5x2 and y = x about the line x = 5. Use the mid-point rule with n = 4 to approximate the area of the region bounded by y =

asked by Hannah on May 16, 2017
75. ## physics

You are hired as ballistics expert and need to measure the muzzle speed of the bullet (with a mass, m = 20 g) for the gun. You fire a ballistic gun horizontally into a 2-kg ballistic pendulum (M = 2 kg) hanging at rest on a massless rod. After the bullet

asked by Anonymous on February 23, 2011
76. ## Physics

James and Steve have a contest to see who can kick a football further. James kicks the football at an angle up of 57 degrees, and a speed of 75m/s. Steve kicks the ball with a speed of 100m/s, at an angle up of 48 degrees? Who wins the contest? Please show

asked by Molly on June 21, 2011
77. ## general physics

The lob in tennis is an effective tactic when your opponent is near the net. It consists of lofting the ball over his head, forcing him to move quickly away from the net (see the drawing). Suppose that you loft the ball with an initial speed of 15.0 m/s at

asked by ODU on July 25, 2013
78. ## algebra

Andy’s average driving speed for a 4-hour trip was 45 miles per hour. During the first 3 hours he drove 40 miles per hour. What was his average speed for the last hour of his trip?

asked by jj on April 24, 2013
79. ## Pre Calc

A bus trip of 90 miles would have taken an hour less if the usual average speed had been increased by 3 miles per hour. Find the usual average speed of the bus.

asked by Jody on September 15, 2014
80. ## Physics

A particle rotates in a circle with centripetal acceleration a = 8.8 m/s2 . What is a if the radius is doubled without changing the particle's speed? What is a if the speed is doubled without changing the circle's radius?

asked by Shiv on October 12, 2015
81. ## Pre Cal.

Together, two printers can print 7500 lines if the first printer prints for 2 minutes and the second prints for 1 minute. If the first printer prints for 1 minutes and the second prints for 2 minutes, they can print 9000 lines together. Find the number of

asked by Anonymous on March 31, 2009
82. ## physics

You are driving your car along a country road at a speed of 21.5 m/s. As you come over the crest of a hill, you notice a farm tractor 35.7 m ahead of you on the road, moving in the same direction as you at a speed of 10.0 m/s. You immediately slam on your

asked by Anonymous on September 11, 2016
83. ## Physics

The 2500 kg cable car shown in the figure below descends a 200 m high hill. In addition to its brakes, the cable car controls its speed by pulling an 1200 kg counterweight up the other side of the hill. The rolling friction of both the cable car and the

asked by Laila on November 3, 2010
84. ## College Physics

A 30.0 m steel wire and a 22.0 m copper wire, both with 1.00 mm diameters, are connected end to end and stretched to a tension of 170 N. How long does it take a transverse wave to travel the entire length of the two wires? (Take the mass per unit length of

asked by Anand on April 16, 2012
85. ## Algebra

A ball is dropped from the top of a building that is 784 feet high. The height of the ball above ground level is given by the polynomial function h(t)= -16t to the second power + vot + ho where t is measured in seconds, vo is the initial velocity and ho is

asked by Julie on July 28, 2013
86. ## math

WHEN MR. LOWE RETURN FROM HIS FISHING TRIP, HIS STUDENTS INQUIRED AS TO THE LENGTH OF HIS PRIZE CATCH. MR. LOWE ANSWERED. "THE HEAD MEASURED 9 INCHES." "THE TAIL WAS AS LONG AS THE HEAD AND HALF THE BODY." THE BODY WAS AS LONG AS THE HEAD AND TAIL." HOW

asked by Maya Is The Best Freaking Person Ever! on November 23, 2014
87. ## Physics

Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 s , due to human reaction time at the start and stop moments.What is the percent uncertainty of a handtimed measurement of 6 s ? What is the percent uncertainty of a

asked by Marie on June 7, 2019
88. ## MATH

WHEN MR. LOWE RETURN FROM HIS FISHING TRIP, HIS STUDENTS INQUIRED AS TO THE LENGTH OF HIS PRIZE CATCH. MR. LOWE ANSWERED. "THE HEAD MEASURED 9 INCHES." "THE TAIL WAS AS LONG AS THE HEAD AND HALF THE BODY." THE BODY WAS AS LONG AS THE HEAD AND TAIL." HOW

asked by MIMI on May 19, 2010
89. ## Physics

A white billiard ball with mass mw = 1.43 kg is moving directly to the right with a speed of v = 3.4 m/s and collides elastically with a black billiard ball with the same mass mb = 1.43 kg that is initially at rest. The two collide elastically and the

90. ## CHEMISTRY

The concentration of Pb2+ in a sample of wastewater is to be determined by using gravimetric analysis. To a 100.0-mL sample of the wastewater is added an excess of sodium carbonate, forming the insoluble lead (II) carbonate (267.2092 g/mol) according to

asked by Anonymous on October 21, 2013
91. ## CHEMISTRY

The concentration of Pb2+ in a sample of wastewater is to be determined by using gravimetric analysis. To a 100.0-mL sample of the wastewater is added an excess of sodium carbonate, forming the insoluble lead (II) carbonate (267.2092 g/mol) according to

asked by Anonymous on October 21, 2013
92. ## CHEMISTRY

The concentration of Pb2+ in a sample of wastewater is to be determined by using gravimetric analysis. To a 100.0-mL sample of the wastewater is added an excess of sodium carbonate, forming the insoluble lead (II) carbonate (267.2092 g/mol) according to

asked by Anonymous on October 21, 2013
93. ## Algebra2

The amount of oil used by a ship traveling at a uniform speed varies jointly with the distance and the square of the speed. The ship uses 30 barrels of oil in traveling 85 miles at 42 mi/h. How many barrels of oil are used when the ship travels 26 miles at

asked by Steve on February 4, 2017
94. ## Pre-calculas

Boat A leaves a dock headed due east at 1:00 PM traveling at a speed of 16 mi/hr. At 2:00 PM, Boat B leaves the same dock traveling due north at a speed of 18 mi/hr. Find an equation that represents the distance d in miles between the boats and any time t

95. ## Impulse and Momentum

In the game of billiards, all the balls have approximately the same mass, about 0.20 kg. The cue ball moving west with a speed of 4.5m/s strikes another ball at rest. After the collision the cue ball moves at an angle of 55degree north of west and the

asked by Jennifer on March 1, 2015
96. ## modern physics

A pi meson of mass m moves with a speed u in the positive y direction in frame S with parameters BETA = u/c and GAMMA = 1/[sqrt(1 - BETA^2)]. The pion decays into two gamma rays. An observer S' moves in the positive x direction with speed v = BETA'c and

asked by Anonymous on October 13, 2006
97. ## physics

A miniature spring-loaded, radio-controlled gun is mounted on an air puck. The gun's bullet has a mass of 5.00 g, and the gun and puck have a combined mass of 120 g. With the system initially at rest, the radio controlled trigger releases the bullet

asked by nur on August 23, 2019
98. ## physics

On a drive from your home to town, you wish to average 52 mph. The distance from your home to town is 106 miles. However, at 53 miles (half way), you ﬁnd you have averaged only 39 mph. What average speed must you maintain in the remaining distance in

asked by amanda and leah on August 9, 2012
99. ## Physics

On a drive from your home to town, you wish to average 44 mph. The distance from your home to town is 106 miles. However, at 53 miles (half way), you find you have averaged only 33 mph. What average speed must you maintain in the remaining distance in

asked by Joe on August 20, 2015
100. ## Physics

On a drive from your home to town, you wish to average 52 mph. The distance from your home to town is 108 miles. However, at 54 miles (half way), you find you have averaged only 39 mph. What average speed must you maintain in the remaining distance in

asked by Karen on September 9, 2015