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The potential energy at x = 8 m is -2000 V and at x = 2 m is +400 V. What is the magnitude and direction of the electric field? 400 V/m directed parallel to the +x-axis 200 V/m directed parallel to the +x-axis 300 V/m directed parallel to the +x-axis 600 V/m directed parallel to the +x-axis 500 V/m directed parallel to the +x-axis
You launch a rock from the origin (0,0) with an initial speed of 50 m/s at an angle of ?o=30° from horizontal. How far horizontally will the rock travel before it lands
a 14 kg steel ball is launched from a cannon at an angle of 20 degrees above the horizontal. the cannon exerted an
The warm source of a Carnot cycle consists of a blast furnace operating at a temperature of 150C, calculate the net heat absorbed from the warm source
What is the total charge of the radon nucleus? (The neutral radon atom has 86electrons.) What is the magnitude of the forceon an electron at a distance of 2.36 Angstrom from the radonnucleus?
Paper has a dielectric constant of 3.5 and a dielectric strength of 16 kV/mm. What is the capacitance of the device
A small remote-control car with a mass of 1.59 kg moves at a constant speed of v = 12.0 m/s in a vertical circle inside a hollow metal cylinder that has a radius of 5 m.
The average speed of blood in the aorta (the main blood vesselcoming from the heart) is 0.300 m/s. The average radius of theaorta is 1.0 cm. The aorta branches into 2×109 capillaries(very small blood vessels) which each have an average radius of 6..
A 0.27 kg rock is thrown perpendicularly upward from the top of the cliff that is 32 m high. When it hits the ground at the base of cliff, the rock has a speed of 29 m/s. suppose that air resistance can be ignored, find out A) initial speed of the ro..
A wheel starts from rest and rotates about its axis with constant angular acceleration. What is the angular velocity when the time t = 6.7 s
q1. a dental bracket exerts the horizontal force of 80.0 n on a tooth at point b. what is the torque on the root of
a golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. the ball leaves the
On a hot summer day in the state of Washington while kayaking, I saw several swimmers jump from a railroad bridge into the Snohomish River below. The swimmers stepped off the bridge, and I estimated that they hit the water 1 s later.
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