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A 4 kg block, resting on a horizontal surface, is struck by a bullet moving horizontally with a speed of 200 m/s. The mass of the bullet is 0.1 kg. The bullet penetrates the block and emerges with a speed of 100m/s. How much energy is dissipated (mostly as heat) in this collision process?
A particular satellite was placed in a circular orbit about 145 mi above Earth. Determine the time required for one complete revolution
Two conductors having net charges of +17.0 µC and -17.0 µC have a potential difference of 17.0 V between them. What is the potential difference between the two conductors
A sound source emits sounds of frequency 210Hz that travel by still air at 340m/s. The listener moves at 75 m/s relative to still air toward the stationary source. What is wavelength of the sound between the source and the listener.
If both the ring and the rod are warmed together, what temperature must they both reach so that the ring barely slips over the rod.
The end of the spring is next to the 20- mark on the ruler.If a 3.0- mass is now attached to the end of the spring, where will end of the spring line up with the ruler marks?
A wire has a diameter of 1.74 mm and a length of 37 m, What is the resistivity of the wire?
A ball is thrown off a cliff, 100m tall, with an initial velocity of 5m/s, How long before the ball hits the ground
the fact that it moves very slowly by sky would probably cause it to be named after Yurtle, the god of turtles.
Why is you are not harmed with the contact of a charged metal ball, although its voltage may be very high? Is the reason similar to why you are not harmed by greater-than-10000 C sparks from the Fourth-of-July sparkler? Define your answer in terms..
The weight of a rectangular block of low-density material is 15.0 N. With a thin string, the cen- ter of the horizontal bottom face of the block is tied to the bottom of a beaker partly filled with water. Find the buoyant force on the block
The Earth (5.98 x 10^24 kg) and the Moon (7.35 x 10^22) kg are separated by an average distance of 3.84 x 10^8 m
The reflected sound is afterwards mixed with the transmitted sound, and 85 beats per second are detected. The speed of sound in body tissue is 1520m/s. compute the speed of the fetal heart wall at the instant this measurement is made.
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