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A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood by a mass of 0.095kg. The block rests on a frictionless surface and is thin enough so that the bullet passes completely during it. Instantly after the bullet exits the block, the speed of the block is 23 m/s.
A) What is the speed of the bullet when it exits the block?
B) What are the initial and final kinetic energies for this system? Describe.
The human lungs can function satisfactorily up to a limit where the pressure difference between the outside and inside of the lungs is 1/21 of an atmosphere. how far below the water can she swim
A pulsar is a rapidly rotating neutron star that continuouslyemits a beam of radio waves in a searchlight manner. Determine the average angular speed (in rad/s) of this pulsar
There is a tree in the middle of your front yard and you take pictures of a squirrel as it runs around the tree. what is the average acceleration of the squirrel between the first and third pictures
A battery with EMF 6.0 Volts and internal resistance 0.1 ohms is connected by a long wire to a resistor R = 8.0 ohm. If the current in the solenoid is I = 200 Amps and is constant, then what is the current through the 8 ohm resistor
Two nanowires are separated by 1.6 nm as measured by STM. Inside the wires the potential energy is zero, but between the wires the potential energy is greater than the electron's energy by only 1.4 eV.
Two satellites of the same mass are in circular orbits of differentradii above the Earth's equator. what is the ratio of the satellites angular momenta
A camera uses a biconvex lens made of glass with an index of refraction of 1.60 and has a radius of curvature of 12cm for the 1st surface, What is the focal length of this lens when used in air
The amplitude of an oscillator decreases to 88.8 of its initial value in 20.5. What is the value of the time constant
how much tension must a cable withstand if it is used to accelerate a 20.0 kg car vertically upward at 0.70 m/s^2
a concave mirror f 54 cm produces an image whose distance from the mirror is one-third the object distance. determine
a force of 20 n is applied at the edge of a wheel of radius 40 cm. find the torque acting on the
You throw a bouncy ball directly down toward the ground. When it leaves your hand, 1 m above the ground, it is moving at 5 m/s. What is the ball's maximum height after it bounces
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