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It takes a force of 80N to compress the spring of a toy pop gun 0.2m to load a .150kg ball. With what speed will the ball leave the gun?
The density of water is 1000 kg/m3, while that of ice is 916.7 kg/m3. If a block of ice is placed in water, what volume fraction of the ice is below the surface
A charged particle is injected at 121 m/s into a 0.0743-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
An astronaut travels from a distant star to the Earth at speed 0.992c. What is the distance from the star to the Earth as measured by an observer on the Earth
A gas sample enclosed in a rigid metal container at room temperature (20.0) has an absolute pressure. What is the new absolute pressure
A violinist is tuning the A string on her violin by listening for beats when this note is played simultaneously with a tuning fork of frequency 440 Hz. What was the frequency of the mistuned A string
An Otto engine uses a gas having \gamma = 1.40 and has a compression ratio of 8.60. what percentage of the fuel would be wasted
A ballplayer standing at home plate hits a baseball that iscaught by another player at the same height above the ground fromwhich it was hit. How high will the ball rise
The electric field points due east and has a magnitude of 4.3 105 N/C. The mass of the electron is 9.11 10-31 kg and that of the proton is 1.67 10-27 kg. Both the proton and electron have charge magnitudes of 1.60 10-19 C.
What is the magnitude of the positive and negative charge? Two conducting spheres have identical radii. Initially they have charges of opposite sign and unequal magnitudes with the magnitude of the positive charge larger than the magnitude of the ..
suppose now that the air carts below are both moving to the right initially. the cart to the left has a mass m1 and an
The force on a particle is directed along an x axis and given by F = 0.97(x/4.6 - 0.52) where x is in meters and F is in Newtons. Find out the work done by the force in moving the particle from x = 0 to x = 8.9 m.
A proton (mass 1 ) is shot toward an unknown target nucleus at a speed of 2.75×106 . The proton rebounds with its speed reduced by 25 while the target nucleus acquires a speed of 3.01×105 . What is the mass, in atomic mass units, of the target nucleu..
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