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A rock is rolled in the sand. It starts at 5.0 m/s, moves in astraight line for a distance of 3.0 m, and then stops. What is the magnitude of the average aceleration?
Discuss briefly centripetal acceleration, the speed and the force exerted by a ball attached to a string.
Light from an argon laser strikes a diffraction grating that has 5350 grooves per centimeter. Determine the wavelength of the laser light
a particle with a charge of 1.60*10^-19 and a mass of 1.67*10^-27kg is found moving in a uniform magnetic field of a strength 1.50T. calculate the kineic energy of the particle
A solar eclipse is projected through a pin- hole of diameter 0.247mmand strikes a screen 3.12 m away. What is the radius of the first diffraction minimum
A boy on a skateboard coasts along at 6.0 m/s. He has a ball that he can throw at a speed of 10 m/s. What is the ball's speed relative to the ground if he throws the ball forward
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles, What is the force between the two alpha particles
A 1.00 m3 container of air absorbs 6098 J of heat at a constant pressure of 1.00 atm. Air has a density of 1.20 kg/m3, Find the increase in the temperature of the air
You have two identical lenses, each with a focal length of 16 cm, and you have a 13 mm tall object which you would like to image. Where will the final image be located and what is its height
A cyclist, traveling at a constant speed, covers a distance of 6860 m in a time period of 34.5 minutes. Calculate the power the cyclist must provide in overcoming that force
Only two forces act on an object (mass=3.76 kg), as in the drawing. Find the direction (relative to the x axis) of the acceleration of the object
An unknown amount of current when passed through a resistance of R1 ? develops a voltage of 100 V and when passed through a resistance of R2 ?, How did you arrive at this conclusion
Explain the physical reason for this observed behavior
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