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Could someone help me answer and understand the following questions:
1) What are the photoelectric effect and the wave model of light?
2) How does the wave model of light connect to the photoelectric effect?
An alpha particle (the nucleus of a helium atom, with charge +2 and a mass four times that of a proton), What is the speed of the antiproton when the particles are 1.6 nm apart
Two resistors when connected in series to a 110 Volt line use one-fourth the power that is used when they are connected in parallel. If one resistor is 2.9 kilo ohm, find what is the resistance of the other
Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 6.3 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mole
two forces 473 n at 11 degrees and 423 n at 28 degrees are applied to a car in an effort to accelerate it.a what is the
You are designing an air delivery system to supply three hand-held rock drills requiring 110 cu ft/min (3.1 m3/min) each. The receiver of the air compressor.
It compresses the spring, and then is pushed back in the opposite direction by the spring, eventually losing contact with the spring.
Three 0.300-kg billiard balls are placed on a table at the corners of a right triangle as shown in the figure. The sides of the triangle are of lengthsa= 0.400 m,b= 0.300 m, andc= 0.500 m. Find the magnitude and direction of the force exerted by m..
A Federation starship ( 2.20×10^6kg ) uses its tractor beam to pull a shuttlecraft ( 2.20×10^4kg ) aboard from a distance of 12.0km away. The tractor beam exerts a constant force of 4.0×104N on the shuttlecraft. Both spacecraft are initially at..
after flying for 15 min in a wind blowing 42 kmh at an angle of 24deg south of east an airplane pilot is over a town
Suppose that the earth is a uniform sphere and that its path around the sun is circular. Compute the kinetic energy that the earth has because of its rotation about its own axis. For comparison, the total energy utilized in the United States in one y..
A 0.041 kg aluminum bullet traveling at 444 m/s strikes an armor plate and comes toa stop. If all its energy is converted to heat that is absorbed by the bullet, what is the bullet's temperature change in degrees Celsius?
a 10.0-kg box is pulled by a horizontal wire in a circle on a rough horizontal surface for which the coefficient of
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