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A rifle is fired, and the 5.21 g bullet hits a hardwood tree, digging into the wood for a distance of 4.35 cm. If the speed of the bullet when it hit the tree was 868 m/s, find the magnitude of the average force, in N, exerted by the tree on the bullet
The kinetic friction of one metal object sliding along anothermetal surface depends lease upon:
A 15.0 mW laser puts out a narrow beam 2.00 mm indiameter. What is the average (rms) value of the electricfield
A tuning fork with a frequency if 536 Hz is placed near the top of a tube opened at one end and closed at the other end. The water level is lowered so that the length of the air column slowly increases from an initial value of 20.25cm. Determine the ..
A 2.5-m long board with a mass of 12 kg is placed on a bar so that it is perfectly balanced, i.e., A 22-kg child sits on the left end of the board. What is the torque they exert on the system
How much charge passes during the starter motor
A baseball is thrown straight up. The drag force is proportional to.In terms of, what is the y-component of ball's acceleration when its speed is half its terminal speed and it is moving up.
A black hole is roughly defined as a an object dense enough that the speed needed for launching things from its surface must be the speed of light or greater. 3.00x108m/s. Determine the maximum radius of the earth
Vector A has a magnitude 3.42 m and points 19.8 degrees north of east, while vector B has magnitude 9.35 m and points 27.6 degrees south of east. Determine the magnitude of A-B
a metallic surface is illuminated with light of wavelength 400 nm if the work function for this metal is 2.487 eV what the velocity of the ejected electrons would be
What is the minimum uncertainty in position, in nm, of an electron whose velocity is known to be between 2.30×105m/s
A rocket is projected upward from the earth's surface (r = RE) with an initial speed v0 that carries it to a distance r = 1.4 RE from the center of the earth. What is the launch speed v0
A 1.5 volt battery is connected to a small light bulb with a resistance of 3.5. what is the current in the light bulb
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