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Write the potential energy equation in the system shown below. The equation is a function of displacment (y) and angular displacement (theta) only. U(y,theta). Only the spring can change length.
I lift a 3 kg rock up and place it on a table 2 meters above the ground. How much gravitational potential energy does the rock have
A grinding wheel is a uniform cylinder with a radius of 8.5 cm and a mass of .580 kg. Calculate its moment of inertia about its center
Radar is used to scan for airplanes near an airport. If an airplane is 10 km from the airport, what is the round-trip travel time for the electromagnetic wave used by the radar system
Your adventurous friend Lola goes bungee jumping. She leaps from a bridge that is 100 m above a river. What is her height above the river at her lowest point
A farsighted eye requires lenses with a power of 1.85 diopters to read comfortably from a book that is 25 cm from his eyes. What is his near point without the lenses
A spacecraft flies in the horizontal direction at a speed of v=0.980c, What is the slope angle to an astronaut on the spacecraft
As a way of determining the inductance of a coil utilized in a research project, a student first connects the coil to a 11.0 V battery and measures a current of 0.650 A. The student then connects the coil to a 24.0V (rms), 60.0 Hz generator and measu..
Find the angular speed about the polar axis, as well as the translational speed and acceleration of a point on the earth’s surface at alatitude of 45°N.
The distance between neighboring singly charged sodium and chlorine ions in crystals of table salt (NaCl) is 2.82 x 10-10 m. What is the attractive electric force between the ions
In one of the rocks brought back from the Moon, it is found that70.7 percent of the initial potassium-40 in the rock has decayed to argon-40. determine how old is the rock
A 124 centimeter long, 5.00 gram string oscillates in its n = 3 mode with a frequency of 160 Hertz and a maximum amplitude of 5.00 mm. Estimate the wavelength in the string
A movie camera with a (single) lens of focal length 85 mm takes a picture of a person standing 35 m away. what is the height of the image in millimeters on the film
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