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A satellite in orbit above Earth's equator is travelling at an orbital speed of 7.45km/s. What is the satellite's altitude (distance from the surface of the Earth)?
In the Law of Conservation of Energy, why is it important that the system be "absent any external work input or output" for the law to hold true?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; How high above the ground will the ball be when it gets to Julie
The intensity of sunlight at the Earth's surface is about 1074.6 W/m2. What is the total power emitted by the Sun
a brother and sister are playing in the woods when suddenly the brother realizes that they are separated. the last
What is the total power dissipated for resistors 1, 3, 4, 6 and 7 in Watts? In other words, find the power dissipated by each and add them together.
a uniform beam of length l and mass m 1.8kg is at rest on two scales. a uniform block with mass m2.7 kg is at rest on
If the outside temperature in winter is -5.0°C, and the inside temperature is 17°C, how many Joules of heat will the heat pump deliver to the inside for each joule of electrical energy used to run the unit, assuming an ideal Camot cycle?
a 2.1mm -diameter glass bead is positively charged. the potential difference between a point 2.5mm from the bead and a
Assume that your team plays an 81-game home schedule in a season.
the summit of a mountain 2700m above base camp is measured on a map to be 4940m horizontally from the camp in a
After a 0.839 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.48E+6 m/s. Through what angle was the photon scattered
A cannon with a muzzle speed of 990 m/s is used to start an avalanche on a mountain slope. At what angle, above the horizontal, should the cannon be fired
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