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a crane on a dock lifts an 1107kg container 28m, swings it out over the deck of a freighter, and lowers the container into the hold of the freighter, which is 9m below the level of the dock. how much work is done by the crane on the container?
An idealized voltmeter is connected across the terminals of a 12.5-{\rm V} battery, and a 73.5-\Omega appliance is also connected across its terminals. What is the internal resistance of the battery?
If we imagine an electron as orbiting the proton, with the orbit of radius 5 x 10 ^-11 m, what is the total energy of the atom
The intensity of the light that reaches Earth from the star is 3.94 x 10-21 W/m2. At what rate does the star radiate EM energy
A 662-keV photon is Compton scattered at an angle of 120degree with respect to its incident direction. What is the energy of the scattered electron? What is the angle between the paths of the scattered electron and photon?
What is the force acting on the electron (magnitude and direction) ? What is the electric field (magnitude and direction ) at the point where the electron is located
A rigid rod of length L= 1.0 m and mass M = 2.5 kg is attached to a pivot mounted d = 0.17 m from one end. The rod can rotate in the vertical plane, and is influenced by gravity. What is the period for small oscillations of the pendulum shown? T =
A 17.0-g piece of Styrofoam carries a net charge of -0.75 µC and is suspended in equilibrium above the center of a large, compute the charge per unit area on the plastic sheet
The woman walks West for 15 minutes and travels a distance of 0.6 km, she then turns North and walks 0.4 km in 15 minutes. What is the womans average velocity
A baseball and a bowling ball are both rolled off a level table at the same time. which will hit the ground first
A satellite moves in a circular orbit around the Earth at a speed of 5680 m/s. Determine the period of the satellite's orbit
Which of the following response(s) will lead to a null vector (?F=0)? Adding a force 2 blocks up and another force ?13 blocks at 33.7° up and to the left. Adding a force 2?2 blocks at 45° to the left and down and another force ?2 blocks at 45° to the..
If a force vector has a magnitude of 2.61 newtons and points 64.5 degrees south of east, then what is its x-component?
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