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Question: A +2.00nC point charge is at the origin, and a second -5.00nC point charge is on the x-axis at x = 0.800m.
1) Find the magnitude of the electric field at x = 0.200m on the x-axis. answer is 574N/C
2) Find the direction of the electric field at x = 0.200m on the x-axis.
The mass of the ball is 1.65 kg, and the mass of the block is 2.27 kg. The length of the wire is 1.23 m. What is the algebraic expression for the speed of the ball just before the collision with the block
a 20-kg package is at rest on an incline when a force p is applied to it. determine the magnitude of p if 10 s is
An object is made of glass and has the shape of a cube 0.11 m on a side, according to an observer at rest relative to it. What is the moving observer's speed (in units of c) relative to the cube
Normal atmospheric pressure at sea level is generally considered to be equal to the pressure exerted by a column of mercury 760mm high. Calculate the corresponding pressure in inches and in Pascals
A concave mirror (R = 82.4 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 52.3 cm from the mirror, How far from the wall should the mirror be located
You want a screen to be illuminated with an intensity of 662 mW/m2. The screen is 10.05 m away from the light source, What is the power of the light source
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 1.8 ms. Find the average net force that acts on him during this time
An airplane releases a ball as it flies parallel to the ground at a height of 145 m as shown in the figure. If the ball lands on the ground precisely 145 m from the release point, compute the speed v of the plane. Neglect any effects due to air resis..
A 20 cubic feet insulated vessel of oxygen at a temperature of 180 psia is stirred by internal paddles until then pressure becomes 300 psia. Determine (a) the change of internal energy, (b) the input work, (c) the heat, and (d) the change of entro..
Approximately how thick is the film of soap in the reddish region of the fourth stripe indicated? Assume that the film is nearly perpendicular both to your line of sight and to the light rays from the lamp, For simplicity, assume that the region s..
what velocity would a proton need to circle earth 1300 km above the magnetic equator where earths magnetic field is
A cup with mass 4.1 kg has been sitting in a room with a temperature of 23 oC for a long time. Calculate the specific heat of the cup
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