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A car moves in a circle with constant speed. The tires do not slip on the road. What is the direction of the friction force on the tires by the road?
A future geosynchronous space station will be used to collect solar energy. The energy is transmitted back to earth as an electromagnetic beam. how large are the station's solar panels
An insulated Thermos contains 123 cm3 of hot coffee at 73 °C. You put a 12.0 g ice cube at its melting point to cool coffee. By how various degrees has your coffee cooled one time the ice has melted and equilibrium is reached? Treat the coffee as tho..
A radiator has an emissivity of 0.95 and its exposed area is 1.23m^2. The temperature of the radiator is 100deg C, What is the heat flow rate from the radiator
A satellite with mass 2200kg is initially in a circular orbit a distance 325km above the earth's surface. Due to air drag, the satellite's altitude decreases to 250km. Calculate the change in gravitational potential energy
A certain freely falling object requires 1.10s to travel the last 32 m before it hits the ground. From what height above the ground did it fall.
A railroad car of mass 2.5 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, How much kinetic energy is lost in the collision
Four identical particles, each with mass m = 10-6 kg and charge Q = 10-6 C, are initially at the four corners of a square with side-length a = 0.01 m. what is the final speed of the released particle once it is very far away
The athlete shown in the figure rotates a 1.00 kg discus along a circular path of radius 1.05 m. Determine the magnitude of the maximum radial acceleration of the discus
A baseball player hits a home run into the right field upper deck. The ball lands in a row that is 140 horizontally from home plate and 30.0 above the playing field. Determine the ball's average velocity components
Determine the flux of particles escaping from the exobase of Earth's atmosphere using a number density at the exobase of 10^5 particles/cm^3 and a temperature of 700K.
The displacement of a particle in meters moving along x axis is given by x=18t+5t^2, calculate instantenaous velocity at t=2 seconds and instantaneous accelration
Sunlight reflects the surface of a swimming pool. At what angle the reflected light is 100% polarized
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