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A fantastic piece of engineering by General Electric was featured on "Predator", the mini-gun. Suppose Arnold holds the gun one foot (.300 meters) from his axis of rotation, firing perpendicular to said axis. His mini-gun shoots Russian 7.62x39 (8.11 grams, 671m/s) at cyclic rate of 3000 rounds per minute. What is the average force his arm is feeling firing the mini-gun, and what is the average torque he is experiencing about his axis of rotation?
How to solve this problem: A 10 cm long animal tendon was found to stretch 3.8 mm by a force of 13.7 N. What is the elastic modulus of this tendon
A spring is compressed by 0.0748 m and is used to launch an object horizontally with a speed of 2.64 m/s. at what angular frequency (in rad/s) would it oscillate
An energy of 39 joules is stored in a metal sphere. If a sparkcarrying 3 x 10-4 C discharges the metal sphere, find the sphere's electric potential before the discharge
a hockey puck has an initial velocity of 42 ms and a final velocity of 26 ms.a. if it travels 25 m during this time
A 7.0mW laser beam has a circular cross section with diameter 0.80 millimeter. Find the maximum radiation pressure that this laser can exert on a mirrored surface
At t = 0, a particle leaves the origin with a velocity of 9 m/s in the positive y direction and moves in xy plane with a constant acceleration of (-2 i -4 j) m/s2. At t = 1 s, what is the velocity of particle in the x direction.
One billiard ball is shot east at 2.8 m/s. A second, identical billiard ball is shot west at 1.2 m/s. Estimate the speed and direction of the first ball after the collision
A 4.5kg ball with a velocity of 4.4m/s in the +x-direction collides head-on elastically with a stationary 1.8kg ball. What is the speed of the first ball after the collision? What is the speed of the second ball after the collision?
question an electron is accelerated through 2.45103v from rest and then enters a uniform 2.80-t magnetic field.a what
A right triangle has a hypotenuse of length 13 meters and makes an angle of 25 degrees with side S1. What is the length of the sides of the triangle, S1 and S2
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.230rev/s . The magnitude of the angular acceleration is 0.893rev/s^2 . Both the the angular velocity and angular accleration are directed clockw..
A 20-kg child swings back and forth on a swing such that her height h in m from the ground as a function of x is described by: h(x) = 0.5 + 0.45x2 for -1.2 m ? x ? 1.2 m
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