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The electric field in a region of space is given by the function E = Γx2x^ where Γ is a constant with value Γ = 120 N/C/m2
a) Compute the potential difference ?VAB between the point A at x = 2 m and the point B at x = 4 m.
b) Explain how you selected the sign of the potential difference.
A 1-Kg object is atteched to a cord which is wrapped around a cylindrical pulley. The pulley is installed on a wall at a height of 10 meters and has a mass of 5-kg and a radius of 10 cm. Find the speed of the object just before hitting the ground,..
A beam of light is traveling in air and strikes a material. The angles of incidence and refraction are 51.8° and 43.2°, respectively
Bored, a boy shoots his pellet gun at a piece of cheese that sits, keeping cool for dinner guests, on a massive block of ice. What is the coefficient of friction between the cheese and ice
For 10000 points, mean is 10 and standard deviation is about 6= Sqrt(770/21). how do they compare with the theoretical value
in a certain binary-star system each star has the a mass of 1.20 x 1030 kg and they revolve about their center of mass.
A rubber ball (mass 0.27 kg) is dropped from a height of 1.8 m onto the floor. What is the magnitude and direction of the impulse imparted by the floor to the ball
A 1.2 kg brick is held a distance of 2 m above a manhole and then dropped. What is the change in potential energy
A man lifts a 13 kg crate directly upwards from the floor to a shelf (6 m high) at constant speed*. What is the work done by gravity on the crate
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 28.2°, What is the index of refraction of the substance
Is the momentum change identical? If not, the ball would have the larger momentum change throughout the collision with the wall?
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
A community plans to build a facility to convert solar radiation to electrical power. They need 3.00 MW of power, and the system to be installed has an efficiency of 30.0% (that is, 30.0% of the solar energy incident on the surface is converted to us..
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