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A proton is accelerated from rest through a potential difference of 9.0V. Find the energy of the particle and the speed of the particle Through what potential difference would an electron need to accelerate to achieve a velocity of 1.00 x 10 7m/s?
a bucket of water of mass 14.7 is suspended by a rope wrapped around a windlass, that is a solid cylinder with diameter 0.280m with mass 11.6 kg. with what speed does the bucket strike the water
An electron has a kinetic energy of 6.00 10-17 J. It moves on a circular path that is perpendicular to a uniform magnetic field of magnitude 4.70 10-5 T. Determine the radius of the path
A day on a distant planet observed orbiting a nearby star is 31.7 hours. Also, a year on the planet lasts 79.5 Earth days.* Calculate the average angular speed of the planet
A charged object has two forces acting on it: F1 (4 Newtons, pointing up at 120 degrees from the positive x axis), Compute the total (net) force acting on the object
Together, two students exert a force of 640 N in pushing a car a distance of 30 m. How much work do the students do on the car
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
Determine the net Force (magnitude and direction) acting on wire 3 due to wires 1 and 2 for currents of 10A. Each wire has a horizontal length of 50 cm and each wire is seperated by a distance of 2 cm
A 0.20 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. Determine the speed of the stone
A monochromatic point source of light emits 5.5 W of electromagnetic power uniformly in all directions. Find the (magnitude of the) Poynting vector at a point situated at each of the following locations:
Jill ( 60kg) is swinging on a rope swing that is 4m long, at what frequency does Jill need to pump her legs to get the swing going higher
An alpha particle (a helium nucleus, containing 2 protons and 2 neutrons) starts out with kinetic energy of 9.9 MeV (9.9x106 eV), What is the final kinetic energy of the gold nucleus
A ball with a mass of 0.65 kg is dropped on a table. The initial height of the ball is 0.85 meters. Calculate the change in the momentum of the ball during its collision with the table
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