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In an experiment to find out the muzzle velocity of your BB gun, you fire a BB straight up into a wooden block of mass 0.050 kg. The BB has a mass of 0.0020 kg. The BB embeds itself in the block, and the BB+block rises to a maximum height of 0.94 m off the table.
(a) What was the kinetic energy of the BB+block just after the BB hit the block?
(b) How fast was the BB+block going just after the BB hit the block?
(c) How fast was the BB going just before the collision?
The bowling ball has a diameter of 20.6 {rm cm}, and the angle the stick makes with the horizontal is 30.0 {rm ^circ}. You may suppose there is no friction between the stick and the bowling ball, though friction with the floor must be taken into acco..
A resistor is connected to a battery with negligible internal resistance. by what factor does the power dissipated in the circuit change
1) Find the net force acting on particle 3 due to the presence of the other two particles. Report you answer as a magnitude and a direction measured from the positive x axis.
A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, How far should she stand from the Washington Monument
On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg, What is the total kinetic energy of the two blocks after the collision
A cube of ice is taken from the freezer at -7.2 ?C and placed in a 115g aluminum calorimeter filled with 318g of water at room temperature of 20.0 ? C. What was the mass of the ice cube
In the previous question, assume that the applies forces are 10N @ 41 degrees and that Force 2 acts at 138 degrees. Calculate the magnitude of the normal force from the floor
A surgeon is attempting to correct a detached retina by using a pulsed laser. If the pulses last for 35.1 ms, how many photons are present in each pulse
In a laboratory experiment, one end of a horizontal string is tied to a support while the other end passes over a frictionless pulley and is tied to a 1.9kg sphere, What is the diameter of the sphere
A football is punted with an initial velocity of 28.7 m/s and an initial angle of 54.1o. What is its hang time
question1a space vehicle is travelling at 4190 kmh relative to earth when the exhausted rocket motor is disengaged and
A sphere that is a perfect blackbody radiator has a radius of 0.100 m, Calculate the net rate at which the sphere radiates energy
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