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A) An initially stationary 2.0 kg object accelerates horizontally and uniformly to a speed of 9 m/s in 3.3 s. In that 3.3 s interval, how much work is done on the object by the force accelerating it?
B) What is the instantaneous power due to that force at the end of the interval?
C) What is the instantaneous power due to that force at the end of the first half of the interval?
A particle with a charge 3.2 x 10^-19 C is moving at a speed of 5x10^7 m/s that makes an angle of 40 degrees with respect to a uniform magnetic field B, Determine the magnetic field strength B
Dan is gliding on his skateboard at 3.0 m/s. He suddenly jumps backward off the skateboard, kicking the skateboard forward at 8.0 m/s. How fast is Dan going as his feet hit the ground
A moving body undergoes uniform acceleration while travelling in a straight line between points X, Y and Z. The distances XY and YZ are both 40m. The time to travel from X to Y is 12s and from Y to Z is 6s.
include a free body diagram. Be sure to label all forces with their agents and size. 1. A 5.0kg cat running along suddenly braces his furry feet on the slippery floot in order to stop.
A 6.0-cm-diameter horizontal pipe gradually narrows to 4.0 cm. When water flows through this pipe at a certain rate, What is the volume rate of flow
A new fabric is made to help athletes stay cool. It has a conductivity constant of 898.785 J/(s m K). what is the power of the materials thermal conductivity
Two forces on the object are = 4.3 at 80 below the +x-axis and = 4.3 at 34 above the -x-axis. Is there a third force on the object? Find the direction of the force
A thin block of soft wood with a mass of 0.074 kg rests on a horizontal frictionless surface. Calculate the initial and final kinetic energies of the system
A flight attendant pulls her 63N flight bag a distance of 312m along a level airport floor at a constant velocity. The force she exerts is 39N at the angle of 59° above the horizontal.
The transmission of electric power occurs at the highest possible voltage to reduce losses. If the voltage were raised by a factor of 9.3, by what factor would the power loss be reduced
He pulls on a rope that is fastened to the platform and runs over a pulley on the ceiling. Illustrate with what force does he have to pull in order to give himself and the platform an upward acceleration of 1.0 m/s^2?
Explain how much distance is between you and the deer when you come to a stop? What is the maximum speed you could have and still not hit the deer?
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