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A 15 g lead bullet traveling at 240m/s passes through a thin wall and emerges at a speed of 160m/s . If the bullet absorbs 54% of the heat generated, what will be the temp. rise of the bullet?
An unmarked police car travelling a constant 80 km/h is passed by the speeder travelling 100 km/h. precisely l.0s after the speeder passes, the policeman steps on an accelerator; if the police car's acceleration is 2.0m/s2, how much time passes befor..
An x-ray photon of 0.13 nm strikes a metal and undergoes Compton scattering of the electrons in the metal. find the wavelength of the scattered photon
A 5.5 ohm resistor, a 11.3 ohm resistor and a 11 ohm resistor are connected in series with a 36 V battery. If the resistors are instead connected in parallel across the battery, what is the equivalent resistance
a student argues the followingwe know that vmax aomega. so if we know the position of a mass on a spring we can
The nucleus of a hydrogen atom is a single proton. The radius of a proton is approximately 1 fm (1 multiplied by 10âˆ'15 m). What is the approximate volume of a proton
A plane sinusoidal electromagnetic wave has a magnetic field amplitude of 5 x 10^-5 T. What average force does this radiation exert on a totally reflecting surface of area 0.5 m^2
A helicopter, starting from rest,accelerates straight up from the roof of a hospital. The liftingforce does work in raising the helicopter. An 810-kg helicopterrises from rest to a speed of 7.0 m/s in a time of 3.5s. Duringthis time it climbs to a..
A pitcher throws a ball weighing 0.3 lb at a velocity of 90 miles per hour (horizontally). The mass moment of inertia of a spherical body is 0.4mR2, What is the total energy of the ball
An electron is released from rest at the negative plate of a parallel plate capacitor. How fast is the electron moving just before it reaches the positive plate
4 moles of an ideal gas have an initial temperature of 127 C. The temperature of the gas is kept constant and the volume is increases until the pressure drops to 40.0% of its original value. Calculate the heat added to the gas
Consider a parallel plate capacitor with plates of size 2 cm times 2 cm, with a distance of 2 mm between the plates. find the speed with which the proton hits the negative plate
Scientists are experimenting with a kind of gun that may eventually be used to fire payloads directly into orbit. How much time is required for the projectile to come up to speed
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