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A proton is traveling to the right at 3.5 x 107 m/s. Find what uniform electric field (magnitude and direction) is needed to cause it to travel to the left at the same speed after one second?
A symmetric concave lens is made of material of refractive index n=1.50 and radii of curvature |r|=20 cm. Determine the image distance and image height by making measurements on your diagram
The nearpoint of an eye is 55 cm. A corrective lens is to be used to allow this eye to clearly focus on objects 25 cm in front of it. What is the power of the needed corrective lens?
A copper sheet of thickness 2.70 mm is bonded to a steel sheet of thickness 4.10 mm. The outside surface of the copper sheet is held at a temperature of 170.0 °C and the steel sheet at 27.0 °C.
a ball of mass 0.120 kg is dropped from rest from a height of 1.25 m. it rebounds from the floor to reach a height of
Where are the majority of older, metal-poor stars found in the Milky Way galaxy? The center of our Milky Way Galaxy can be observed most easilyat which of the following electromagnetic wavelengths? A spiral density wave refers to a region of enhanced..
You work for Wham-O! Computer Inc. in its product testing department. Find the laptop velocity right before it hits the floor
Car A has two times the mass of car B, but only 0.4 as much kinetic energy. Find the ratio between the speeds of the two cars
A wood log with a volume of 12 ft3 is submerged in water. Calculate the buoyant force (in Newtons) acting on the log
An vehicles starts from rest and accelerates at a rate of 2m/s2 in a straight line until it reaches a speed of20m/s. The vehicle then slows at a constant rate of1m/s2 until it stops.
a body has a mass of 2000 kg. determine the weight of the body expressed in n if it is a located on the surface of the
A marble is thrown horizontally with a speed of 19 m/s from the top of a building. From what height above the ground was the marble thrown
An underground telephone cable, consisting of a pair of wires, has suffered a short somewhere along its length (at point P in the Figure). The telephone cable is 6.00 km long, and in order to decide where the short is, a technician first measures the..
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