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An Olympic long jumper is capable of jumping 8.0 meter. Suppose that his horizontal speed is 8.9 m/s as he leaves the ground and that he lands standing upright that is the similar way he left the ground. Calculate how long is the jumper in the air?
Calculate how high does the jumper go?
Two lightweight rods 24 {rm cm} in length are mounted perpendicular to an axle and at 180 ^circ to each other. At the end of each rod is a 480 {rm g} mass. The rods are spaced 42 {rm cm} apart along an axle. The axle rotates at 4.90 rad/s.
Water flowing out of a horizontal pipe emerges through a nozzle is 0.48 cm. The speed of the water in the pipe is 0.62 m/s. Treat the water as an ideal fluid, and determine the absolute pressure of the water in the pipe.
What is the pressure (in kPa) exerted by an object that has a base which is 2cm by 4cm nd a weight of 45N.
A resonant circuit in a radio receiver is tuned to a certain station when the inductor has a value of 1.50 µH and the capacitor has a value of 2.20 pF. Find the frequency of the radio station
Determine the phase and group velocities for a monatomic lattice. Plot the velocities versus the wave vector k and give a brief discussion of their significance.
A battery with an emf of 1.50 V has an internal resistance r. When connected to a resistor R, the terminal voltage is 1.40 V, what is the resulting current
Write an equation for a wave with a frequency of 2Hz, a wavelength of 30 m, and an amplitude of 75 cm
blocks are lined up in a row on a frictionless table. How much force does the 8.0 block exert on the 7 block.
A recording engineer works in a soundproofed room that is38.5 dB quieter than the outside. Ifthe sound intensity in the room is 1.10 x 10-10W/m2, what is the intensity outside
A 65-? loudspeaker, a 8.0-? loudspeaker, and a 2.1-? loudspeaker are connected in parallel across the terminals of an amplifier. Determine the equivalent resistance of the three speakers
a garden hose is attached to a water faucet on one end and a spray nozzle on the other end. the water faucet is turned on, what is the pressure inside the hose
ball b moving in the positive direction of an x axis at speed v collides with stationary ball a at the origin. a and b
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