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A 20.0 kg box rests on a table.
(a) What is the weight of the box and the normal force acting on it?
(b) A 10.0 kg box is placed on top of the 20.0 kg, as shown. Determine the normal force that the table exerts on the 20.0 kg box and the normal force that the 20.0 kg box exerts on the 10.0 kg box. Show free body diagram too.
Two identical small insulating balls are suspended by separate 0.208m threads that are attached to a common point on the ceiling. Determine the charge on each ball
A rubber balloon is filled with 1 L of air at 1 atm and room temperature. what is the new volume of the balloon
A girl jumps on bike and exerts torque of 25.0 N-m perpendicular to the pedal. Moment of inertia of bike wheel is I = 0.045kg-m^2. What is angular velocity of bike wheel at end of this time
Calculate the direction, magnitude and line of action of the vertical and horizontal components of hydrostatic force acting on a surface.
A point charge of +5.34 ?C is located at the center of a sphere with a radius of 12.6 cm. Determine the electric flux through the surface of the sphere.
A potter's wheel having a radius 0.55m and a moment of inertia 12.5 kg·m2 is rotating freely at 55rev/min. The potter can stop the wheel in 6s by pressing a wet rag against the rim and exerting a radially inward force of 68 N.
Suppose the ruler in procedure 3 is asymmetrical, balancing at the58.2cm mark. The ruler is now supported at the44.3cm mark, Find the mass of the ruler
A 435 kg car moving at 20.0 m/s hits from behind another car moving at 9.0 m/s in the same direction. what is the velocity of the first car after the collision
A capacitor with 10 microfarad capacitance is connected in series with a resistor of 2.5 mega-ohms. If this capacitor is charged to 4 volts, and the circuit is closed, how many seconds will pass before the voltage drops to 1 volt?
An engine with an output of 267.0 W has an efficiency of 39.0 %. It works at 9.00 cycles/s. How much work is done in each cycle
Draw the circuit with the following criteria; double acting cylinder used for broaching holes into metal plates. The cylinder is 24" long mounted vertically, What is the minimum horsepower required by the prime mover
A girl is using a rope to pull a box that weighs 300 N across a level surface with constant velocity. What is the friction force of the floor on the box
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