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An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has amass of 4.9 × 104 kg, and the force causes its speed to change from 7500 to 4800 m/s.(a) What is the work done by the force? (b) If the asteroid slows down over a distance of 1.6 × 106 m decide the magnitude of the force.
A 71.0 kg skier is pulled up a frictionless ski slope that makes an angle of 15.0 deg. Determine the magnitude of the force exerted by the rope on the skier
An electromagnetic wave is travelling in vacuum along the horizontal or x-axis. It consists of an electric field of peak strength 2.1 x 10-5 Vm-1 in the vertical direction or z axis and a magnetic field. Find the magnitude of the associated pointin..
a rock is tossed straight up with a speed of 27 ms. when it returns it falls into a hole 15 m deep.part a what is the
question a person pulls a toboggan for a distance of 34.8 m along the snow with a rope directed 32.2 degrees above the
during liftoff a hot-air balloon accelerates upward at a rate of 3.3 . the balloonist drops an object over the side of
A diving board of length 3{rm m} is supported at a point 1 {rm m} from the end, and a diver weighing 550 {rm N} stands at the free end. The diving board is of uniform cross section and weighs 295 {rm N}. Find out the magnitude of the force at the ..
gold which has a density of 19.32 gcm3 is the most ductile metal and can be pressed into a thin leaf or drawn out into
A soprano saxophone is an open pipe. If all keys are closed, it is approximately 65 cm long. Using 343 m/s as the speed of sound, find the lowest frequency that can be played on the instrument.
The total energy of a particle is 3.97 times its rest energy. The mass of the particle is 2.8 × 10^-27 kg. With what speed is the particle moving and what is the particle's momentum
during an earthquake a tall building sways back and forth every 6.0 seconds. the top moves a maximum 2.4m from
A 20 liter tank of helium is at a pressure of 172kPa at a temperature of 0 C. What is the speed of the helium atoms in the tank at this new volume
A railroad car of mass m moving at v collides completely inelastically with a stationary railroad car of mass 2 m and couples to it
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