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A 10 g bullet moving 1000 m/s strikes and passes through a 2.0-kg block initially at rest, as shown. The bullet emerges from the block with a speed of 400 m/s. (a) (5 pts) How much energy was lost in the collision? (b) (5 pts) Calculate the average force exerted on the block assuming that the impact time is 10-4s. (c) (5 pts) To what maximum height will the block rise above its initial position?
Alice made a telephone call from her home telephone in New York to her fiance stationed in Baghdad, about 10,000km away, Estimate the time taken for signals sent by telephone cable
What is the electric potential energy of a system that consists of two protons 2.0×10?15 apart-as might occur inside a typical nucleus?
The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.51 m/s. Illustrate what are the speed and direction of the first ball after the collision?
A high fountain of water is located at the center of a circular pool, How high is the fountain
A top is a toy that is made to spin on its pointed end by pulling on a string wrapped around the body of the top. What is the final angular velocity of the top
A uniform magnetic field is normal to the plane of a circular loop 10 cm in diameter made of copper wire (diameter 2.5 mm). At what rate must the magnetic field change with the time if an induced current of 10 A is to appear in the loop? The resistiv..
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
The centripetal and tangential accelerations are equal
A diverging lens has a focal length of 71.5 cm. A real object is placed 30.9 cm in front of the lens. How far is the image located from the lens
You are in a hot-air balloon that, relative to the ground, has a velocity of 4.65 m/s in a direction due east. find direction of the hawk's velocity relative to the ground
A helicopter flies over the arctic ice pack at a constant altitude, towing an airborne 193-kg laser sensor which measures the thickness of the ice, find the tension in the cable towing the sensor
At t = 0, a rectangular coil of resistance R = 1.6 ? and dimensions w = 3 cm and L = 8 cm enters a region of constant magnetic field B = 1.7 T directed into the screen, find the force required at time t = 0.8 sec to maintain this velocity
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