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Q. Calculate the moment of inertia of the array of point objects about the vertical axis. Assume m = 1.5kg , M = 3.8kg , and the objects are wired together by very light, rigid pieces of wire. The array is rectangular and is split through the middle by the horizontal axis. Then calculate the moment of inertia of the array of point objects about the horizontal axis. About which axis would it be harder to accelerate this array?
Q. An electric field of 7.90 x10^5 V/m is desired between two parallel plates, each of area 41.0 cm2 and separated by 2.45 mm of air. What charge must be on each plate?
You shoot an arrow into the air. Two seconds later arrow has gone straight upward to a height of 30 meters above its launch point. a) What was the arrow's initial speed? b) How long did it take for the arrow to first reach a height of 15 meters ab..
If the 2 kg mass slides on a horizontal frictionless surface, what is the speed of the mass 4 kg while it has fallen a distance 0.4 m downward from its rest position.
Find out vertical and horizontal components of the pendulum
A 5.20 g pop up toy is compressed 1.50 cm and pops up to the height of 50 cm the spring constant is 270 Nm. What is the loss of energy.
A 12kg runaway grocery cart runs into a spring with spring constant 210 N/m and compresses it by 70 cm .What was the speed of the cart just before it hit the spring.
What is the block's distance from equilibrium as the speed are 36 cm/s? What is block's position at t=1.0 s.
At t=0 a grinding wheel has an angular velocity of 30.0 rad/s. It has a constant angular acceleration of 31.0 rad/s^2 until a circuit breaker trips at time t = 2.00 s. From then on, it turns through an angle 428 rad as it coasts to a stop at constant..
Find the electric field inside the cylinder
Three charged particles are placed at corners of an equilateral triangle of side 1.20m. The charges are + 7.0 mc,-8.0 mc and -6.0 mc compute the magnitude and direction of the net force on each due to the other two.
The change in the kinetic energy of the system
What is the turntable rotation angular velocity
A 61 kg speed skater with the velocity of 16 m/s comes into a curve of 18 m radius. How much friction should be exerted between skates and ice to negotiate the curve.
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