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The surface of the Sun has a temperature of 5500 C and the temperature of deep space is 3.0 K. Find the entropy increase produced by the Sun in one day, given that it radiates heat at the rate of 3.80x10^26 W. How much work could have been done if this heat had been used to run an ideal heat engine?
A hoop and a cylinder of the same mass and outer radius are rolled up an incline plane with the same speed. Which goes farther up the incline plane? Explain
A ball is dropped from height of 20 m above the surface of water in a lake. The refractive index of water is 4 / 3. A fish inside the lake, in the line of fall of the ball, is looking at the ball. At an instant, when the ball is 12.8 m above the wate..
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
Consider an XY coordinate plane. Wire A is placed along the y-axis at x=0 and wire B is placed parallel to wire A at x= 0.240 m, Find the magnitude of the magnetic field at x=0.380 m
q1. a cylinderical water tank of radius 10ft and height 30ft is half filled with water. how much work is essential to
You are standing 2.2m from a 110-W lightbulb. If the pupil of your eye is a circle 5.0mm in diameter, how much energy enters your eye per second
A 9.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point between the two masses 19.0 cm from the 9.00 kg mass along the line connecting the two fixed masses.
The speed of light is 1.10 times as large in material A than in material B. Determine the ratio na/nb of the refractive indices of these materials
A 0.105-kg ball is dropped from rest. If magnitude of the ball's momentum is 0.790 kg · m/s just before it lands on the ground, from what height was it dropped.
There are 2 inclines A & B. Identical carts are placed on the top of each incline and release them from rest. Both inclines have the similar height and are friction less, but angles of the two incline are not the similar. Would carts acceleration ..
Two runners are racing to a turn-around point 6 km away and then back to the starting point. Which runner wins and by how much
A motorcycle moves in a flat circular path of radius R on a surface with a coefficient of kenetic friction of 0.25 and a coefficient of static friction of 0.35. How long does it take to complete one full circle
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