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Question: Point charge 2.0 uC is located at x= 0, y= 0.30m , point charge -2.0uC is located at x = 0 y = -0.30 . What are (a)the magnitude and (b)direction of the total electric force that these cha
The peak instantaneous current in a certain lightning stroke is 21,700 A vertically upward. The current is approximately constant at this value for 1.2 10-4 s.
Determine (a) when the ball will hit the elevator, (b) where the ball will hit the elevator with respect to the location of the man.
Find the average speed of the electrons in a 1.7 cm diameter, copper power line, when it carries a current of 52 A. (The density of free electrons in copper is 8.5 1028/m3.)
Calculate stopping distance from 62 mph for a vehicle with a tire/road friction coefficient equal to 0.6, 0.8 and 1.0, successively. Assume the vehicle can be modeled using particle dynamics.
The terminal voltage of a certain battery is measured with the battery disconnected and is found to be 5.94 V. The internal resistance of the battery is 1.11 ? Find the voltage across the battery te
what is the shortest distance you need to walk forward to be at a point where you cannot hear the speakers?
My question is this For an air conditioner used as a heat pump, the coefficient of performance can be as high as the inverse of the Carnot efficiency which is run between the temperature inside (27
Question: A 5.3 -thick layer of oil (n=1.46) is sandwiched between a 1.1cm -thick sheet of glass and a 2.1cm -thick sheet of polystyrene plastic (n=1.59) (1)How long (in ns) does it take light incid
A beam of light from a monochromatic laser shines into a piece of glass. The glass has thickness L and index of refraction n=1.5 . The wavelength of the laser light in vacuum is L/10 and its freque
Explain the changes in the velocity, acceleration, and net force of a man with a parachute jumping off a plane. You need to describe the changes with valid scientific principles.
(1) What is the wavelength of the second laser that would place its second maximum at the same location as the fourth minimum of the first laser, if d= 0.350mm ?
Two lasers are shining on a double slit, with slit separation. Laser 1 has a wavelength of d/20 , whereas laser 2 has a wavelength of d/15. The lasers produce separate interference patterns on a sc
(a) Using the outward normal for each face of the cube, find the electric flux through each of the six faces. (Let the side of the cube in the x, z plane be the bottom of the cube, the side of the c
The spring constant is k=8 lb/in. and the tension in the cable is 3 lb. If the cable is cut, determine (a) the maximum displacement of the block, (b) the maximum speed of the block.
A small object, which has a charge q = 8.2 µC and mass m = 9.80 x10^-5 kg, is placed in a constant electric field. Starting from rest, the object accelerates to a speed of 2.08 x10^3 m/s in a
Given the indices of refraction and of material 1 and material 2, respectively, rank these scenarios on the basis of the phase shift in the refracted ray. (n1 air=1.00 n2 water=1.33) (n1air=1.00 n2
How long does it take for a short pulse of light to travel from one end of the glass to the other? A beam of light from a monochromatic laser shines into a piece of glass.
You have three identical charged spheres, each with a charge of 3.70 µC. You have arranged them so they are each at the corners of a square that measures 3.2m on a side. Find the magnitude of
Three point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle, as the drawing shows. The magnitude of each of the
Water flows through a 4-cm pipe, wrought iron, horizontal pipeline 50-m long from point A to B, and contains a fully opened gate valve and two elbows (R/D = 4). If the pressure downstream at B is 19
What is the difference in temperature between the inner and outer sufaces of the aluminum bottom of the pot? What is the change in entropy of the boiling water after boiling away 0.19 kg of water?
An even more efficient system is a geothermal air conditioner, where the heat pump runs between the inside temperature (27 C) and pipes which are buried underground below the frost line where the te
How many miles away was the lightning strike? (Assume the light takes essentially no time to reach you.)
A plate capacitor has a spacing between its plates of 5.0 mm and a potential difference of 3.0 *10^3 V across its plates. an electron is released from the negative plate. how fast is the electron tr