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A 2200-kg pile driver is used to drive a steel beam into the ground. The pile driver falls 7.00 m before coming into contact with the top of the beam, and it drives the beam 14.0 cm farther into the ground as it comes to rest. Using energy considerations, calculate the average force the beam exerts on the pile driver while the pile driver is brought to rest.
What is the angular velocity in rad/s . What is the least pressure obtained inside the bottle? What will happen when this pressure is reached.
IF Earth's orbit were suddenly to become much more eccentric. keeping orbital semimajor axis as is, fixed at 1 AU, but let's imagine shifting both the Earth's perihelion and aphelion points by 0.9 AU, so that at perihelion we were only 0.1 AU from th..
What friction torque is required to reduce its angular speed from 80.0 to 51 in 27.
A steel beam that is 5 m long weighs 320N. It rests on two supports, 3.00 m apart, with same amounts of the beam extending from each end. Suki, who weighs 525N, stands on the beam in the center and then walks toward one end. How close to the end c..
Explain by how much horizontal force F must a sprinter of mass 62.0 kg exert on the starting blocks to produce this acceleration?
Describes possible scenarios among following
During 5 successive 0.97 min intervals, a runner moves at the following constant speeds: 0.436 km/min, 0.250 km/min, 0.160 km/min, 0.160 km/min, and 0.320 km/min. calculate the total distance traveled and the average speed.
Johnny takes a running jump off the trampoline. He lands on the ground after .95 seconds. His landing point is 1.2 m below and 2 m horizontally from his launch point. FInd: A. His initial velocity B. FInal Velocity C. his maximum height above the ..
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = 38.8 cm. Precisely 35.7 cm behind this lens is a concave lens with the focal length f2 = -10.3 cm. The object to be photographed is 3.97 m in front o..
A marble is thrown horizontally with a speed of 19.0 m/s from the top of building. When it strikes the ground, marble has a velocity that makes an angle 75° with the horizontal. From what height above the ground was the marble thrown.
A 1000N force stretches a wire by 4.0mm . A:A second wire of the same material is twice as long and has twice the diameter. How much force is needed to stretch it by 1.0 mm? B:A third wire of the same material is twice as long as the first and has..
What is the childs total mechanical energy. If the speed of the child at the lowest position is 2.00 m/s, what is the change in mechanical energy due to friction.
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