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A diver of mass 70kg jumps off a board 10m above the water. If his downward motion is stopped 2 secs after he enters the water, what average upward force did the water exert on him?
Compute the mass of a ball and speed of a puck after collision.
A particular engine has a power output of 4.00 kW and an efficiency of 23.0%. Assume the engine expels 7000 J of energy in each cycle. Find the energy absorbed in each cycle
An ocianliner is heading due north with a speed of 8.5 m/srelative to the water. A small sailboat is heading 45 degreeseast of north with a speed of 1.0 m/s relative to thewater. Determine the directional angle relative to due north
The unpolarized light of intensity I(not) is passed through two polarizers with axes oriented at 30degrees from each other. What intensity of light emerges
A blue car with mass mc = 442 kg is moving east with a speed of vc = 22 m/s and collides with a purple truck with mass mt = 1213 kg that is moving south with a speed of vt = 12 m/s. find the magnitude of the initial momentum of the car
A satellite in a circular orbit around the planet Glob-IV has an orbital period of 246 minutes. Find the height of the satellite above the planet's surface
A galvanometer has a coil resistance of 100 ohms and gives a full scale deflection when the potential difference across it is 0.0005 V. What size resistor (with a value measured in ohms) is required
An ideal transformer has 50 turns in its primary and 400 turns in its secondary. 8.0- ac is connected to the primary. What is the power supplied to the primary
An electron is shot upward directly perpendicular to the lower plate of a parallel plate capacitor. Its initial velocity is 3.0 x 104 m/s. What must be the potential of the upper plate if the electron stops just before reaching it? The lower plate..
A pitcher throws a curveball that reaches the catcher in 0.59 s. The ball curves because it is spinning at an average angular velocity of 380 rev/min on its way to the catcher's mitt. What is the angular displacement of the baseball as it travels ..
Green light (? = 546 nm) strikes a single slit at normal incidence. What width slit will produce a central maximum
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
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