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A 16 gram bullet strikes and becomes embedded in a 1.10 kilogram block of wood located on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the surface and the block is 0.25, and the impact drives the block a distance of 9.3 meter before it comes to rest, evaluate what was the muzzle speed of the bullet?
A 2-m3 vessel contains air at 40oC and 236 kPa. The vessel is fed with fresh air until the air inside the vessel reaches 93oC and 1 MPa. Calculate how much air was added to the vessel
In a football game, a receiver is standing still, having just caught a pass. Before he can move, a tackler, running at a velocityof +3.79 m/s, grabs him. The tackler holds onto the receiver, andthe two move off together with a velocity of +1.55 m/..
A baseball player with mass m = 75 kilogram, sliding into second base, is retarded by a frictional force of magnitude 500 Newton. Find coefficient of kinetic friction between player and ground
a helium balloon floats at the end of a string. the lift force due to the helium on the balloon is 30 n. if the tension
questioncora lies in a tanning bed getting a tan. suppose that as 0.79 m2 of her skin is exposed to the light from the
Shamu weighs 10000 lbs. on earth. What is Shamu's mass (in kg) on Earth, What is shamu's mass (in kg) on the moon
A vertical wall (5.4 m 2.4 m) in a house faces due east. A uniform electric field has a magnitude of 164 N/C. What is the electric flux through the wall
Suppose two alpha particles were held together so they were just touching. Estimate the electrostatic repulsive force each would exert on the other
Two people, one of mass 75kg and the other of mass 60kg, sit in a rowboat of mass 80 kg. With the boat initially at rest, two people, who have been sitting at opposite ends of the boat 3.2 m apart from each other, now exchange seats. How far and i..
A 20.0- projectile is fired at an angle of 60.0 above horizontal with a speed of 80. At the highest point of its trajectory, projectile explodes into two fragments with equal mass, one of which falls vertically with zero initial speed. You can ign..
When ultraviolet light with a wavelength of 254 nm falls upon a clean metal surface, What is the photoelectric threshold wavelength for this metal
when a piano is properly tuned the note a should have the frequency 440hz and the note e should be at 659hz. the tuner
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