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If the length of a simple pendulum is increased by 6%, what is the percentage change in the time period?
A person places a book on the roof of a car and drives off without remembering to remove it. What is the net force acting on the book
question the work function of sodium is 2.23 ev. what is the longest wavelength that a photon may have if it is to
Suppose that a binary-star system consists of two stars of equal mass. What is the mass of each
Calculate the threshold frequency and wavelength for photoelectric effect from magnesium
A 1200 kg car traveling initially with a speed of 25.0 m/s in an easterly direction crashes into the rear-end of a 8200 kg truck moving in the same direction at 20.0 m/s. The velocity of the car right after the collision is 18.0 m/s to the east. What..
A particle known as a pion lives for a short time before breaking apart into other particles. What is the lifetime according to a hypothetical person who is riding along with the pion
What is the medical term for blood culture, genital and urinary infection, fever, eardrum, and skin? It's for medical terminology
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 50.0cm. What is the magnitude of the gravitational acceleration on this planet
A solid sphere of mass 4.0 kg and radius 0.12 m is at rest at the top of a ramp inclined 15 degrees. It rolls to the bottom without slipping. The upper end of the ramp is 1.2 m higher that the lower end. Find the sphere's total kinetic energy when..
Suppose a van de Graaff generator is turned on and a positive charge builds up on its dome. How many electrons are involved in the arcing process
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
The planet Mercury takes only 88 Earth days to orbit the Sun. Assume the motion is uniform in a nearly circular orbit, with a radius of 5.79*10^10m. What is Mercury's tangential velocity
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