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Can someone please describe the photoelectric effect? How did Einstein's explanation of the photoelectric effect further quantum theory?
a sphere with a mass of .3 kg and a radius of 15 cm starts from rest on a 22 degree incline 50 cm above a horizontal
A positive test charge of8.94× 10-5C is placed in an electric field of54.84N/Cinten- sity. What is the strength of the force exerted on the test charge
Which of the following are types of electromagnetic radiation? (Check ALL that apply) Sound Radio waves Gamma rays Infrared X-Rays Visible light Pressure waves
A man pushes a lawn mower on a level lawn with a force of 215N. If 31% of this force is directed downward, and 50W of power is expanded in pushing the mower 5.8 m, how much time is spent in pushing the mower this distance?
A wagon is rolling forward on level ground. Friction is negligible. The person sitting in the wagon is holding a rock. Find the speed of the wagon after the rock is thrown
The apparatus show in firgure P11.8 was used by Joule tomeasure the mechanical equivalent of heat. what is the increase in tempterature of the water
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. What is the work done by the field on the electron
A beam of particles have a measured life time of 1.5 × 10-8 s when traveling 2.0 × 108 m/s. What would their lifetime be if they were at rest?
For uniform flow in open channel, Bernoulli's equation for energy loss.
A barge has vertical sides and a flat bottom of 320 ft^2 area. when partially filled, the barge is immersed in fresh water to a depth of 2 ft. upon removal of the load the barge rises 16.0 in.
A thin uniform rod (mass = 0.75 kg) swings about an axis that passes through one end of the rod and is perpendicular to the plane of the swing. What is the maximum kinetic energy of the rod as it swings
q1. light passes through a 230 linesmm grating and is observed on a 1.0m wide screen located 1.3m behind the grating.
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