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A pile driver drives apost into the ground. The mass of the pile driver is 2 500 kg andit is dropped through a height of 8.0 m on each stroke. If theresisting force of the ground is 4.0 x 10^6 N, how far is the postdriven in on each stroke?
The activity (decays per second) of a certain radionuclide is observed to decrease by 87.5% in 30 hours. What is the half life T(1/2) of the radionuclide
A rocket is launched from rest with an acceleration of 30m/s^2 for the duration of one second when it runs out of fuel. What is the max height of the rocket
Three 1kg masses are at the vertices of an equilateral triangle of sides 10 cm. determine the location of the center of mass (x,y)
You stand at the center of a carousel spinning at rate w. You throw a ball horizontally with some velocity v from height h. How long does it take for the ball to hit the ground?
The surface temperature of the start Betelgeuse is 3500K. Assume Betelgeuse radiates as a perfect blackbody. what is the energy of each of these photons
Air (density = 1.29kg/m^3) passes over the top and bottom surfaces of an aircraft whose effective wing area is 75.5m2. what is the mass of the plane
A lit firecracker is shot straight up at 50 m/s. How high is it above ground level 5 s later when it explodes? How fast is it moving when it blows up? How far has it fallen from its maximum height?
Intense white light is incident on a diffraction grating that has 625 lines/mm. What is the angular separation between the violet edge (400 nm) and the red edge (700 nm) of the first order spectrum produced by the grating
A 1328.0 g mass is on a horizontal surface with μk = 0.32, and is in contact with a massless spring with a force constant of 550.0 N/m which is compressed. Calculate the distance the spring was compressed
A horizontal force F{x} =F0 (1-t / T), which decreases from F0 at t =0 to zero at t =T, is exerted on the object. Find an expression for the object's velocity
Design an audio amplifier using a JFET and a 20-volt power supply. The amplifier is to have a gain of 50
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. Based on this measurement, what is the work function for this metal
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