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A Carnot refrigerator is driven by a small motor whose output of mechanical power is 100W. If the heat reservoirs are at temperatures of 20 degrees and -5 degrees, how much heat will be removed from the cool reservoir in one hour?
Estimate the spacing between the two irrandiance maxima closest to the geometric of a plain wave illuminated straightedge if the source distance is 10.0 cm and the observation distance is 20.0 cm. Assume wavelength=632.8 nm.
Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point?
A century ago, scientists believed that the universe was infinite with no beginning and no end. Einstein then predicted that the universe is either contracting or expanding. Why do you think Einstein thought that the universe had no beginning? Do you..
What's the definition of quantum physics, in layman's terms?
A 4.0 kg particle starts from rest at x = 0 and moves under the influence of a single force Fx = 6 + 4x - 3x2, where Fx is in newtons and x is in meters. Find the power delivered to the particle when it is at x = 2.0 m
Discuss the importance of communication and information exchange to project success. What are the crucial features and elements of effective communication and information exchange in successful projects
question1assume that an ideal frictionless inclined plane has an angle of inclination of 5.00deg with respect to the
A 38 g bullet is fired with a speed of 180 m/s into a 5 kg sandbag pendulum that is free to swing. To what maximum vertical height will the pendulum rise.
A 2.8-cm-diameter parallel-plate capacitor has a 2.4mm spacing. The electric field strength inside the capacitor is 1.4×105V/m. How much charge is on each plate
A teenager pushes tangentially on a small hand-driven merry-go-round and is able to accelerate it from rest to a frequency of 12 rpm in 10.0 s. What force is required at the edge
A concave mirror (R = 64 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 40.0 cm from the mirror, How far from the wall should the mirror be located
A satellite is placed into an earth orbit and passes 100miles above the ground as its closest point while moving at 18,000mph. What is the furthest it gets from the surface, and how fast is it traveling at that point?
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