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A proton is released at the origin in a constant electric field of 850 N/C acting in the positive x-direction. Discover the change in the electric potential energy associated by the proton after it travels to x = 2.5 m.
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A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.550 of the escape ..
What is the source of charge carriers moving in an electric circuit, and what is the role of the battery/source in that movement
Kathy buys a sports car that can accelerate at the rate of 4.9 m/s/s. She decides to test the car by racing with her friend Stan. At what time does Kathy overtake Stan
you are driving in a 1500 kg car and have to negotiate a curve with a radius of 35 m. the coefficient of static
LASIK eye surgery uses pulses of laser light to shave off tissue from the cornea, reshaping it. what is the intensity of the light wave
A hill is covered with snow, and has a slope of 30 degree above the horizontal. The slope is l = 40.m long. How fast is the snowball rolling at the end
A perfectly flat thin piece of glass (n=1.5) that is 6cm long and 2cm wide is placed over a perfectly flat piece of black plastic (n=1.2) that is the same size. One end of the glass is slightly elevated while the other end is in contact with the plas..
An electron and proton are separated by 2.0 nm. What is the net force on the system
A mass is projected upwards from the Earth's surface with an initial velocity of 7000m/s. Determine how far into space it will go before it stops rising and is on the point of returning to earth
A bedroom bureau with a mass of 40 kg, including drawers and clothing, rests on the horizontal floor. compute the static friction force on the bureau initially
What is the magnification of an astronomical telescope whose objective lens has a focal length of 71 cm and whose eyepiece has a focal length of 2.1 cm
A person with a remote mountain cabin plans to install her own hydroelectric plant. A nearby stream is 3.00 m wide and 0.500 m deep. Water flows at 1.05 m/s over the brink of a waterfall 5.10 m high. The manufacturer promises only 25.0% efficiency..
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