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A billiard ball is moving in the x direction at 30.0 cm/s and strikes another billiard ball moving in the y direction at 40.0 cm/s. As a result of the collision, the second ball moves at 50.0 cm/s, and the first ball stops. In what final direction does the second ball move?
a rock is dropped into an abandon mine and a splash is heard 10 s later. how fast the rock was falling when it hit the water
A 34.0-kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 225 N. What is the final speed of the crate after being pulled these 21.0 m
Explain why the electron density of hydrogen is very nearly 6x10^26 electrons/kg. Explain why the electron density of all other low atomic number materials is nearly 3 x 10^26 electrons/kg. speculate why the electron density of materials might differ..
A gas increases in pressure from 2.0 atm to 6.0 atm at a constant volume of 1.0 m3 and then expands at constant pressure to a volume of 3.0 m3 before returning to its initial state. How much work is completed in one cycle.
There is a region with a constant magnetic field 5.2T. The magnetic field is directed out of the page. What is the power in the rod
A mountain climber wears a goose down jacket 3.3cm thick with total surface area 1.2m^2 . The temperature at the surface of the clothing is -20C and at the skin is 34 C. Determine the rate of heat flow by conduction through the jacket
An ion harvester is scouring deep space for isolated xenon (Xe+) ions. A xenon ion is singly ionized, and has a charge of +e. how far away is it from the ion
Suppose that the sound level of a conversation is initially at an angry 72 dB and then drops to a soothing 50 dB. determine the initial and final sound intensities
Vectors and lie in an xy plane. has magnitude 8.40 and angle 132° from the positive direction of the x axis. has components Bx = -8.00 and By = -9.20. (Type 'undefined' for any answer if appropriate.)
A helicopter is ascending vertically with a speed of 5.03m/s. How much time does it take for the package to reach the ground
What must be the area of a suction cup that is completely evacuated and a ceiling if the cup is to support a child who weighs 30 kg
A Carnot engine works between two heat reservoirs at temperatures Th = 305 K and Tc = 60 K. How much heat does it give off in each cycle
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