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In what part of the EM spectrum would a photon of energy 9.5 x10-25J be found? What is its energy in electron volts?
1. identify three specific challenges to making direct measurements in the fields of astronomy chemistry physics or
q. 1 a 1600 car travelling at 20 suddenly runs out of gas while approaching the valley that looks like an inverted
A car sounding its horn (rated by the manufacturer at 600 Hz) is moving at 20 m/s toward the east. What frequency will he hear the assuming that the speed of sound is 343 m/s
a one pound weight is released 3 feet off the ground. at the same time a two pound weight is released 5 feet off the
An aluminum rod is 17.0 cm long at 20°C and has a mass of 350 g. what is the change in length of the rod
A 35.0-g bullet moving at 475 m/s strikes a 3.2-kg bag of flour that is on ice, at rest. The bullet passes through the bag, leaving at 225 m/s. How fast is the bag moving while the bullet exits.
A current of 74.8 mA exists in a metal wire, In what direction do the electrons travel with respect to the current
A proton and an electron are held apart a distance of one meter, Calculate the electric force F between them and Show the electric force vector on each of them
A very slippery ice cube slides in a vertical plane around the inside of a smooth, 20 cm diameter horizontal pipe. Find an algebraic expression for the ice cube's speed
The men's world record for the shot put, 23.12 m, was set by Randy Barnes of the United States on May 20; 1990.If the shot was launched from 6 ft above the ground at an initial angle of 42degrees, what was its initial speed.
Two hockey players are traveling at velocities of v1 = 11 m/s and v2 = -20 m/s when they undergo a head-on collision. What is the mass of the other player
Calculate the earth’s radiative temperature (TE) for an albedo value of 0.27, 0.30 and 0.33. Then estimate the surface temperature using a reasonable estimate of the temperature increase due to the greenhouse effect. Summarize the scientifically vali..
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