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An object is placed 5.2 cm in front of a circular converging mirror. A real image forms 16.2 cm in front of the mirror. By what factor does the radius of curvature of the mirror need to increase such that if the object is placed at the same position it forms a virtual image which is 16.2 cm from the mirror?
The rain-soaked shoes of a person may explode if ground current from nearby lightning vaporizes the water. what average current is required to vaporize the water
The legend that Benjamin Franklin flew a kite as a storm approached is only a legend - he was neither stupid nor suicidal. what is the current through the water layer
Wavelengths of light from a remote galaxy are found to be 1.5 % longer than the corresponding wavelengths measured here on earth. What ids the speed of the galaxy relative to earth
Announcers at a certain radio station say that they are at "95 FM on your dial," meaning that they transmit at a frequency of 95 MHz (95 megahertz, or 95 million cycles per second). What is the wavelength of the radio waves from this station?
What is a vapor compression cycle? How is the performance of a vapor compression refrigerator measured?
A 0.150kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.710m/s, Find the magnitude of the final velocity of the 0.150 kg glider
A 300 kg crate is placed on an adjustable inclined plane. As one end of the incline is raised; the crate begins to move downward. If the crate slides down the plane with an acceleration of 0.70 m/s2 when the incline angle is 25o, what is the coeffici..
A car makes a trip due north for three-fourths of the time and duesouth one-fourth of the time. The average northward velocity has amagnitude of 33 m/s, and the averagesouthward velocity has a magnitude of 20 m/s. What is the average velocity (magnit..
In a bicycle race, the leader is travelling with a constant velocity of 11.10 m/s and is 10.0 m ahead of the second-place cyclist. The second place cyclist has a velocity of 9.50 m/s and an acceleration of 1.20 m/s squared. How much time elapses b..
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outside air
Relativistic reversal of events. Figures 37-25a and b show the (usual) situation in which a primed reference frame passes an unprimed reference frame, in the common positive direction of the x and x' axes, at a constant relative velocity of magnit..
A cylindrical barrel with a radius of 30 centimeter and a mass of 75 kilogram rolls across a warehouse floor without slipping. Calculate the total kinetic energy of the barrel
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