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A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam-powered catapult. The thrust of its engines is 3.26 x 105 N. In being launched from rest it moves through a distance of 64.9 m and has a kinetic energy of 7.81 x 107 J at lift-off. What is the work done on the jet by the catapult?
Find out the force each hand exerts on the shaft when the shaft is rotating in the horizontal plane about its center at 5×10-2 {rm rev/s}.
A student has built a 20-cm-long pinhole camera for a science fair project. She wants to photograph the Washington Monument, How far should she stand from the Washington Monument
Assume you are 65.00 cm from a plane mirror. What area of the mirror is used to reflect the rays entering one eye from a point on the tip of your nose if your pupil diameter is 5.0 mm.
find out the speed with which the pebble strikes the ground when the pebble is fired (a) horizontally, (b) vertically straight up, and (c) vertically straight down
A coin is located 20.0 cm to the left of a converging lens (f = 13.0 cm). A second, identical lens is placed to the right of the first lens, Find the separation between the lenses.
A point particle that has a charge of 18.5 µC is located at x = 0, y = 0 and a point particle that has a charge q is located at x = 14.8 cm, y = 0. The electric force on a point particle that has a charge of 7.4 µC at x = 29.6 cm, y = 0 is -(19.7)..
An ideal spring is wrapped around a cylinder that is free to rotate with negligible friction about a stationary horizontal axis. Is independent of the moment of inertia of the cylinder
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
Find the diameter of an aluminum rod that would conduct heat at the same rate as a 2.816 cm diameter copper rod of the same length
Two tiny conducting spheres are identical and carry charges of -21.4C and +51.0C. They are separated by a distance of 3.30 cm. (a) What is the magnitude of the force that each sphere experiences?
The drawing shows a triple jump on a checkerboard, starting at the center of square A and ending on the center of square B, What is the magnitude of the displacement of the colored checker during the triple jump
A hydrogen atom is in its first excited state (n = 2). Using the Bohr theory of the atom, calculate (a) the radius of the orbit, (b) the linear momentum of the electron.
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