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An archer shoots a 100 g arrow straight up in the air. The bow was drawn back 50 centimeter by a 150 force. Calculate how high does the arrow rise, suppose friction is negligible? Calculate how high does the arrow rise assuming the force of air friction on the arrow averages 0.80 Newton during the upward flight. Assume the bow acts like an ideal spring.
What value of capacitance will ensure that an output voltage stays within 3 percent of the rated 22v . find an electric field between them and surface charge density on the plate.
A grade school student plans to build a 38-power telescope as a science fair project. What focal length is needed for her objective
a tiny sphere of mass 7.30 microg and charge 2.80 nc is initially at a distance of 1.74 microm from a fixed charge of
A plane flies at 1.25 times the speed of sound. It's sonicboom reaches a man on the ground 1.00 min after the plane passesdirectly overhead. what is the altitude of the plane
When a portable fan is first turned on it draws 4.62 A. After it has come up to speed it draws 0.55 A. calculate the back emf while the motor is running
A motorcycle, which has an initial linear speed of 6.4 m/s, decelerates to a speed of 1.5 m/s in 5.7 s. estimate the angular displacement (in rad) of each wheel
A model rocket is fired vertically from rest. It has a net acceleration of 16.5 m/s2. After 1.1 s, its fuel is exhausted and its only acceleration is that due to gravity. how high does the rocket travel
a charged cloud system produces an electric field in the air near earths surface. a particle of charge -2.2 x 10-9 c is
Identical point charges of +3.6 ?C are fixed to diagonally opposite corners of a square. Find the sign and magnitude of the third charge
an automotive starter motor is designed to draw a current of 100a from an ideal voltage source of 12v. the starter is
violet light and red light travel through air and strike a block of plastic at the same angle of incidence. the angle
In Rutherford's famous scattering experiment, α particles (helium nuclei) were fired at 2.0 x 10^7 m/s over a large distance toward a gold nucleus with charge +79e. How close does the α particle get before turning around?
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