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A golf ball hits a wall and bounces back at 1/4 the original speed. What part of the original kinetic energy of the ball did it lose in the collision?
he rate P at which a star radiates energy in the form of electromagnetic waves can be calculated using the equation, Calculate a numerical value for the intensity of sunlight
The gravitational acceleration on the surface of Mercury is 0.38 times that of Earth. What is the ratio of the density of Mars to that of Earth
A particle known as a pion lives for a short time before breaking apart into other particles. According to this hypothetical person, how far does the laboratory move before the pion breaks apart
200 Joules of heat flows into a 35 g sample. If the temperature increases by 10°C, then what is the heat capacity of the sample
A spherical balloon of volume 4.03 x10^3 cm3 contains helium at the pressure of 1.15 x10^5 Pa. How various moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x10-22 J.
Knowing the temperature at the surface of the Earth to be 72 Find the temperature at the surface of Venus
take a small perturbation to the keplerian potential. vr -vsub0r -deltavr4. calculate the phase shift over one orbit
When a softball player swings a bat, she accelerates it from rest to an angular velocity of 10 rad/s in a time of 0.27686 seconds. find the magnitude of the torque she applies to the end of the bat
A particle of velocity v and mass 6.40 x 10^-25 kg has a wavelength of 20.7 fm. Its kinetic energy is the same as the energy of a photon of wavelength \theta. Find \theta.
Driving in your car with a constant speed of 13 m/s, you encounter a bump in the road that has a circular cross section, as indicated in the figure. If the radius of curvature of the bump is r = 29 m, find the apparent weight of a 59-kg person in you..
A certain cable car in San Francisco can stop in 10s while travelling at maximum speed. On one occasion, driver sees a dog a distance d m in front of the car and slams on the brakes instantly.
q1. assume that you are walking perpendicularly with a velocity of 0.90 ms toward a stationary plane mirror. what is
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