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Find what the quantity of heat is needed to raise the temperature of a 15-kgpiece of steel from 0°Cto 90°C. The specific heat capacity of steel is 450J/kg⋅°C. How does this compare with the heat needed to raise the temperature of the same mass of water through the same temperature difference?
A photographer in a helicopter ascending vertically at a constant rate of 1.2 m/s accidentally drops a camera out the window when the helicopter is 42.0 m above the ground. How long will it take the camera to reach the ground
in a science fiction movie a 100 g base ball travelling with a speed of 60m/s and an electron travelling at a speed of 1.2*10^8 m/s are approaching each other for a head on collision, what is the momentum of the base ball
we have a container of a hot ideal monatomic gas. the volume of the container is 25 liters. the temperature of the gas
A mass of .500 kg is connected to a spring of spring constant 30 N/m. The oscillation begins by pulling the mass to the right to amplitude 0.40 m before release, what is the damping constant of the oscillation
The resistivity of gold is 2.44 x 10-8 ohms.m at room temperature. A gold wire that is 0.9 mm in diameter, What is the electric field in the wire
The Earth has a mass of 5.97x1024 kg and orbits the Sun in one year at an average distance of 1.496 x 108 km. What is the centripetal force, in Newtons, that keeps the Earth in its orbit around the Sun?
If the crate was at rest at the top of the incline and has a speed of 2.20m/s at the bottom, how much work Wf was done on the crate by friction
A farmer named Ben attempts to remove an 80-kg rock from his field. He applies a force of 789 N for 10 seconds but could not move the rock. How much work has he done
Water flows through a Venturi meter with a pipe diameter of 10.0 cm and a constriction diameter of 5.6 cm. Find the flow rate of the water in the pipe of 10.0 cm diameter
a charge q1 3.00 nc is placed at the origin of an xy-coordinate system and a charge q2 -1.00 nc is placed on the
A football is kicked with a speed of 20 m/s at an angle of 40 degrees to the horizontal? What is the final velocity of the football
Asteroid 433 Eros is one of the largest near-Earth asteroids. Forpurposes of this problem, assume it is spherical. What is the raidus of Eros
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