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Question: A charging bull elephant with a mass of 5500 kg comes directly toward you with a speed of 4.20 m/s. You toss a 0.150-kg rubber ball at the elephant with a speed of 9.63 m/s.
(a) When the ball bounces back elastically toward you, what is its speed?
A long, narrow steel rod of length 2.5000 m at 25 C is oscillating as a pendulum about a horizontal axis through one end. what will be the fractional change in its period
A sled weighing 52.0 N is pulledhorizontally across snow so that the coefficient of kineticfriction between sled and snow is 0.100. A penguin weighing72.0 N rides on the sled, as in the figure below.
An inductor used in a dc power supply has an inductance of 12.0H and a resistance of 170 OMEGA . It carries a current of 0.300 A. What is the energy stored in the magnetic field
Two football players are initially 2m apart. At the same instant they accelerate towards each other, Draw a picture. Define your coordinate system
A soccer ball is kicked with a speed of 9.50 m/s at an angleof 25.0º above the horizontal. how long was it in the air
Two metal rods, one silver and the other gold, are attached to each other. The free end of the silver rod is connected to a steam chamber, with a temperature of 100°C, and the free end of the gold rod to an ice water bath, with a temperature of 0°..
A child ties a rock to a string and whirls it around in a horizontal circle. find the period of its uniform circular motion
In a certain organic molecule, the nuclei of two carbon atoms areseparated by a distance of 0.35 \rm nm. What is the magnitude of the electric force between them ?
the potential in cylindrical coordinates is given as V(r,φ)= (100/r)sin(3φ). Find Where is the location of zero voltage? Find electric field intensity for all points.
An airplane flies from Boston to San Francisco (a distance of 5000 km) in the morning, then immediately returns to Boston. What is the average speed relative to the ground on the way back to Boston
Write down the original position of the system
Metal sphere 1 has a positive charge of 8.00nC . Metal sphere 2, which is twice the diameter of sphere 1, What are the final charges on each sphere
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