Friday

April 18, 2014

April 18, 2014

Total # Posts: 69

**Physics**

A truck travels due east for a distance of 1.7 km, turns around and goes due west for 7.1 km, and finally turns around again and travels 3.5 km due east. What is the total distance that the truck travels? What are the magnitude and direction of the truck's displacement?

**Science/Biology**

Please?

**Science/Biology**

True or False. The volume of the lungs is the most important factor in determining their efficiency.

**Finance**

Your friend claims that he invested $5,000 seven years ago and that this investment is worth $38,700 today. For this to be true, what annual rate of return did he have to earn? Assume the interest compounds annually.

**math**

For the functions f(x)=3x-12 and g(x)=(x/3)+4, find each of the following a) f o g (x) b) g o f (x)

**social studies**

Who was Michigan's firstgovernor?

**reading**

What are some things the Pilgrims bring with them on the Mayflower

**social studies**

When dose Michigan becomes a state

**science**

What are 2 ways resources are brought up from under Earth's surface?

**Science**

From under Earth's surface

**Science**

What are 3 ways resources are brought up from the earth's surface?

**Algebra II**

The kinetic energy of a moving body is directly proportional to its mass and the square of its speed. If the mass of a bullet is halved, by what factor must its speed be increased to have the same kinetic energy as before?

**Alegra II**

If 750 m of 3.00-mm-diameter wire has a resistance of 27.6, what length of similar wire 5.00 mm in diameter will have the same resistance?

**Alegra II**

If y varies directly as the cube of x and inversely as the square root of w, fill in the missing values in the table. I need help finding the answers w x y 1.27 ? 3.05 ? 5.66 1.93 4.66 2.75 3.87 7.07 1.56 ?

**Algebra II**

The resistance of a wire is inversely proportional to the square of its diameter. If an AWG (American wire gauge) size 12 conductor (0.0808-in. diameter) has a resistance of 14.8, what will be the resistance of an AWG size 10 conductor (0.1019-in. diameter) of the same length ...

**Algebra II**

The light source located 2.75 m from a surface produces an illumination of 528 lux on that surface. Find the illumination if the distance is changed to 1.55 m.

**Algebra II**

The force of attraction between the earth and some object is called the weight of that object. The law of gravitation states, then, that the weight of an object is inversely proportional to the square of its distance from the center of the earth. If a person weighs 120 lb on t...

**Algebra II**

The air in a cylinder is at a pressure of 14.7 lb/in.^2 and occupies a volume of 175 in.^3 Find the pressure when it is compressed to 25.0 in^3.

**Algebra II**

Express as a single logarithm with a coefficient of 1. Assume that the logarithms in the given problem have the same base. 4log a-3log b+5log c

**Algebra II**

Solve for X to three significant digits. 9^(2x)=11^(3x-2)

**Algebra II**

A population growing at a rate of 1.6% per year from an initial population of 11000 will grow in t years to an amount How many years will it take the population to triple?

**Algebra II**

Solve for X. log(x^2-9)-1=log(x+3)

**Algebra II**

Solve for X. Give exact answer in form of fraction. ln 27+ln(x-8)=ln(9x-8)

**Physics**

In a mass spectrometer, singely ionized carbon-12 (normal carbon of atomic mass number 12) has a radius of curvature of 9 cm. What would be the radius of curvature of singely ionized carbon-14, assuming equal velocities?

**Physics**

A particular magnetic field points west. A proton moved from north to south. What direction is th magnetic force on the proton? Up,down,east or northwest

**Physics**

An horizontally flying airplane has a 20 m wing span. If the vertical component of the Earth's magnetic field is 2*10^-5 T, and the voltage measured from wing tip to wing tip is 4 mV, What is the ground speed of the plane?

**Physics**

A bar magnet with its south pole down passes through a conducting ring. As viewed from above the ring, in which direction does the current flow?

**Physics**

Transformers are used to increase the voltage produced at power plants. Why is it desirable for the power to be transmitted at high voltage? (a) the the transformer induction will be less resulting in less joule heating (b) then the resistance of the wires will be less resulti...

**Physics**

The wavelength of light emitted from a distant galaxy by a hydrogen atom is observed to be 400 nm. If it is known that the laboratory wavelength of this light emitted by hydrogen is 380 nm, what is the velocity of the galaxy? (a) .135c away from Earth (b) .135c toward Earth (c...

**Physics**

A mchanical analody of the resonance in an RLC circuit is (a) flying off a spinning merry-go-round (b) a growing snow ball rolling down a hill (c) pushing someone in a swing (d) ripples in a pond

**Physics**

What is the wavelength of radio waves of frequency 1400 kHz? (a) 42.9 (b) 214 (c) 42.9 (d) 3*10^8

**Physics**

No I got da answer A just don't kno if it's write

**Physics**

What is the resonant frequency in an RLC circuit if R=5 , C=6, and L=12 mH, and V-115 V? (a) 593 (b) 41,400 (c) 1560 (d) 1793

**Physics**

A bar magnet with its south pole down passes through a conducting ring. As viewed from above the ring, in which direction does the current flow? (a) cw (b) ccw (c) no current flows

**Physics**

An horizontally flying airplane has a 20 m wing span. If the vertical component of the Earth's magnetic field is 2*10^-5 T, and the voltage measured from wing tip to wing tip is 4 mV, What is the ground speed of the plane? (A) 5 m/s (B) 20 m/s (C) 7 m/s (D) 10 m/s

**Physics**

According to Faraday's law a change in flux through a circuit produces an emf. Which of the following does not produce a change in flux? (a) change in magnetic field (b) change resistance (c) change in area (d) change in orientation angle

**Physics**

Don't understand this...can u break it down

**Physics**

In a mass spectrometer, singely ionized carbon-12 (normal carbon of atomic mass number 12) has a radius of curvature of 9 cm. What would be the radius of curvature of singely ionized carbon-14, assuming equal velocities? (A) 12.3 (B) 10.5 (C) 7.71 (D) 3.58

**Physics**

The first accurate measurement of the speed of light was made by Roemer in the 17th century. His measurements were based on observations of (a) The timing of the eclipses of the binary stars Alpha and beta Centauri (B) Refraction of light from a star when the star was eclipsed...

**Physics**

A particular magnetic field points west. A proton moved from north to south. What direction is th magnetic force on the proton? Up,down,east or northwest

**Algebra II**

A capstan on a magnetic tape drive rotates at 3600 rad/min and drives the tape at a speed of 45.0 m/min. Find the diameter of the capstan in millimeters

**Algebra ii**

Find the latitude of a city that is 1265 mi from the equator.

**Algebra ii**

City B is due north of city A. City A has a latitude of 14.6 degrees N, and city B has a latitude of 47.2 degrees N. find the distance in kilometers between the cities.

**Algebra ii**

The pulley attached to the turning knob of a radio has a radius of 35 mm. How far will the needle move if the knob is turned a quarter of a revolution?

**Algebra ii**

A 1.25 m long pendulum swings 5.75 degrees on each side of the vertical. Find the length of arc traveled by the end of the pendulum.

**Algebra ii**

A certain town is at a latitude of 35.2 degrees N. Find the distance in miles from the town to the north pole.

**Algebra II**

A plane flies with a heading of 48 degrees NW and an air speed of 584 km/h. It is driven from its course by a wind of 58.0 km/h from 12.0 degrees SE. Find the ground speed and the drift angle of the plane.

**Algebra II**

The heading of a plane is 27.7 degrees NE, and its air speed is 255 mi.h. If the wind is blowing from the south with a velocity of 42.0 mi/h, find the actual direction of travel of the plane, and its ground speed.

**Algebra II**

The resultant of two forces of 1120 N and 2210 N is 2870 N. What angle does the resultant make with each of the two forces?

**Algebra II**

Forces of 675 lb and 828 ob act on a body. The smaller force acts due north; the larger force acts N 52.3 degrees E. Find the direction and the magnitude of the resultant.

**Algebra II**

A plane is headed due west with an air speed of 212 km/h. It it driven from its course by a wind from due north blowing at 23.6 km/h. Find ground speed of the plane and the actual direction of travel.

**Algebra II**

A projectile is launched at an angle of 55.6 degrees to the horizontal and follows a straight path with a speed of 7550 m/min. Find the vertical and horizontale components of this velocity.

**algebra**

A pilot heading his polane due north finds the actual direction of travel to be 5.2 NE. The planes's air speed is 315 mi/h, and the wind is from die west. Find the plane's ground speed and the velocity of the wind.

**Algebra II**

A certain escalator travels at a rate of 10.6 m/min, and its angle of inclination is 32.5 degrees. What is the vertical component of the velocity? How long will it take a passenger to travel 10.0 m vertically?

**Math**

Find the first two zeros of the function y=sin(4x+20) (in degrees) for x > 0, and the value of y at x=9.

**Ap human geo**

Umm this isn't really a question, it's actually a thank you to Ms. Sue for answering my question. Although it was not direct and you made me think, ugh, I figured it out!!!! I did not check until today the 25 of May bcause no other website has given me an answer so fas...

**ap human georaphy**

I`m supposed to write a paper on the pelican brief because we just watched it. We are supposed to do it based on geographic concepts we have used this year, I have no clue what to do?

**College Physics**

I've seen this question many times on the internet and am bothered with the erroneous answers that were provided. I know that you are most likely done with this class (and hopefully you have passed it) but for the sake of anyone else who is looking for an answer here is th...

**health**

what is carbon monoxide in

**Spanish Homework Help (English Included)**

Por lo tanto,misia pepa,su marido y su hija tienen que quedarse en casa. Interesantemente, no parece molestarles mucho. Simplemente pasan el dia hablando entre ellos. May you please Translate this for me .

**stats**

how do you construct a relative frequency table based on an ogive?

**12th grade government/economics**

can you desccribe the definition of economics in these letters as examples J,K,O,Q,X,Y

**english**

no we're supposed to bring in an essay written by another author about race or culture to share with the class.

**english**

are there any websites that have short essays on race/culture by authors like mark twain, amy tan, etc?

**chemistry**

how do i calculate the molar solubility of AgBr in .10M NaBr?

**American History**

Discuss actions of the U.S. Government toward Native Americans from the colonial period until 1890. Describe three specific events or issues that demonstrate the Government attitude and desires. Question 68 answers

**juliette low**

ffgfghfhsh

**physics**

gravational force deimos, a satellite of amrs, has an average radius of 6.3 km. If the gravational force between deimos and a 3.0 kg rock at its surface is 2.5x10(-2)N..what is the mass of deimos ? Use the Universal Law of gravitation: Force= G Mm/distance^2 Solve for M. i did...

**english**

What is the simple subject and simple predicate of the following sentence? As I skiied down the hill,the wind bit at my face. http://www.chompchomp.com/terms/subject.htm Scroll down for the section to help you determine the difference between the simple subject and the complet...

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