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An Earth satellite moves in a circular orbit 660 km above the Earth's surface. The period of the motion is 97.7 min. What is the speed of the satellite? (b) What is the magnitude of the centripetal acceleration of the satellite?
Draw a complete rigid body diagram for a boom of a crane. Given, it is hanging clockwise, with a mass hanging from it as well
The fuel gage for a gasoline tank in the car reads proportional to the bottom gage pressure .if the tank is 30cm deep and accidentally contains 2 com of water plus gasoline how many centimetres of air remain at the top when gage erroneously reads ..
A 32.0 kg child slides down a long slide in a playground. She starts from rest at a height h1 of 21.00 m. Calculate the mechanical energy lost due to friction
Stars, to a good approximation, are spherical, and emit electromagnetic radiation from a surface of emissivity e = 1. What is the diameter (in millions of km) of this star
A sound wave travels in air toward the surface of a freshwater lake and enters into the water. The frequency of the sound does npt change when the sound enters the water. The wavelength of the sound is 2.49 m in the air, and the temperature of bot..
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. determine how fast will the disk be turning
Two point charges are located on the y-axis as follows: one charge = -1.35 located at -0.555 , and a second charge = 3.10 at the origin. What is the direction of the total force
The index of refraction of crown glass for violet light is 1.528, while for red light it is 1.514. What is the speed of violet light in crown glass
In the drawing the head-up display is designed so that the distance between the digital readout device and virtual image 1 is 1.60 m. Find the focal length of the concave mirror
Three resistors are connected in series across a 11-V power supply. what is the exact potential drop (in volts) across resistor 3
A photographer in a helicopter ascending vertically at a constant rate of 12.5 m/s accidentally drops a camera out the window, How long will it take the camera to reach the ground
Rate Equations in a Four-Level Laser. Consider a four-level laser with an active volume V = 1 cm ^3 . The population densities of the upper and lower laser levels are N 2 and N 1 and N = N 2 - N 1 . The pumping rate is such that the steady-state p..
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