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The primary coil of a transformer makes 40 turns around the iron core and the secondary coil of that transformer makes 600 turns. If the primary voltage is 120V, what is the secondary voltage (in V)?
A spherical aluminum ball of mass 1.55 kg contains an empty spherical cavity that is concentric with the ball. The ball just barely floats in water. Calculate the outer radius of the ball
q1. a 77 person stands on the uniform ladder 4.0 long that weighs 100. the floor is rough hence it exerts both a normal
A cyclotron particle accelerator (sometimes called an "atom smasher" in the popular press) is a device for accelerating charged particles, How fast are these protons moving when they hit the tumor
a 4.0-oc charge is situated at the origin of an xy-coordinate system. what is the potential difference between a point
while standing in a low tunnel you push up on the ceiling with a force of 100N. your mass is 70kg. What force does the floor exert on you
a 140g block on a frictionless table is firmly attached to one end of a spring with k 24nm . the other end of the
a moving particle encounters an external electric field that decreases its kinetic energy from 9910 ev to 6840 ev as
A tennis ball of mass 57.0 g is held just above a basketball of mass 590 g. With their centers vertically aligned, both balls are released from rest at the same time, to fall through adistance of 2.00 m.
An object executing simple harmonic motion has a maximum speed of 4.9 m/s and a maximum acceleration of 0.70 m/s2. Find the amplitude of this motion
a loundspeaker diaphragm is producing a sound for 2.1 s by moving back and forth in a simple harmonic motion. the
A shotgun fires a large number of pellets upward, with some pellets traveling very nearly vertically and others as much as 1.0o from the vertical. suppose that the initial speed of the pellets is uniformly 150ms-1 and ignore air resistance.
Suppose a flat roof has a surface area of 9.20000×101 m2. Presume the air inside the building (and under the roof) is at atmospheric pressure, 1.01325×105 Pa, What is the lift force acting on the roof
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