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A man pushes a lawn mower on a level lawn with a force of 212N. If 41% of this force is directed downward, how much work is done by the man in pushing the mower 7.4m?
two particles are fixed to an x axis particle 1 of charge q1 2.10 x 10-8 c at x 20 cm and particle 2 of charge q2
The Yerkes telescope in southern Wisconsin is the largest refracting telescope in the world. What are the focal lengths of the two lenses
How much work did movers do (horizontally) pushing a 150-{rm kg} crate 10.6 m across a rough floor without acceleration, if the effective coefficient of friction was 0.50.
an adventurous archaeologist crosses between two rock cliffs by slowly going hand-over-hand along a rope stretched
If you were to build a pipe organ with open-tube pipes spanning the range of human hearing (20 Hz to 20 kHz), what would be the range of the lengths of pipes required
two identical point charges of q 1.25 x 10-8 c are separated by a distance of 0.90 m. what is the minimum amount of
What is the energy density in the electric field at the surface of a 2.00-cm-diameter sphere charged to a potential of 2000V
The starter motor of a car engine draws an electric current of 19 Amp from the battery. Obtain how much electric charge passes through the starter motor
An athlete swings a 3.90-kg ball horizontally on the end of a rope. The ball moves in a circle of radius 0.840 m at an angular speed of 0.670 rev/s. What is the tangential speed of the ball
n = 3.60 mol of Hydrogen gas is initially at T = 340 K temperature and pi = 3.32×105 Pa pressure, How much entropy did the gas emit
Neglect air resistance, as well as any energy absorbed by the pole, and clarify her altitude as she crosses the bar.
An industrial laser is utilized to burn a hole through a piece of metal. The average intensity of the light is = 4.17×109 W/m2. What is the rms value of (a) the electric field and (b) the magnetic field in the electromagnetic wave emitted with the la..
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