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A 7.75- g bullet from a 9-mm pistol has a velocity of 397.0 m/s.
It strikes the 0.785- kg block of a ballistic pendulum and passes completely through the block.
If the block rises through a distance h = 10.15 cm, what was the velocity of the bullet as it emerged from the block?
A football is kicked straight up into the air; it hits the ground 3.4 later. With what speed did it leave the kicker's foot
A 4-kg block lies on a horizontal table whose coefficient of friction is 0.3. A horizontal rope is redirected by a uniform solid disk (pulley) of mass 2 kg to a mass of 12-kg hanging off the table. How many revolutions does the disk of the pulley m..
The work function of a certain metal is ? = 2.55 eV. Determine the minimum frequency of light f0 for which photoelectrons are emitted from the metal. (Planck's constant is: h = 4.1357×10-15 eVs.)
A 0.250 kg ball attached to a string s being swung in a vertical circle, like a roller coaster doing a loop-de-loop, with a radius of 1.15 m. What is the minimum speed at the top of the circle to keep the string from going slack
A plane, diving with constant speed at an angle of 53.0° with the vertical, releases a projectile at an altitude of 750 m. The projectile hits the ground 7.00 s after release.
A hoop and a disk, both of 0.46- m radius and 2.0- kg mass,are released from the top of an inclined plane 2.8 m high and 7.7 mlong. What is the speed of the hoop
Two 50 ohm resistors are connected in series to a 12 volt battery. What is the total resistance of the circuit
A singly charged ion of unknown mass moves in a circle of radius 14.5 cm in a magnetic field of 7.4 T, What is the mass of the ion
A 0.15-kg apple falls off a tree branch that is 2.8m above the grass. The apple sinks 0.066m into the grass while stopping
How long after the first strike does Wilma hears the sound. What is the time interval between successive sound pulses she hears.
An exoplanet of mass 7.4e26 kg orbits its parent star at an angle of inclination of 28.9 degrees. determine the period of the exoplanet in days
The source of a sound wave has a power of 2.20 µW. Assume it is a point source. What is the sound level at that distance
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