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On a banked race track, the smallest circular path on which cars can move has a radius of 106 m, while the largest has a radius of 165 m, as the drawing illustrates. The height of the outer wall is 12.7 m. Find
(a) the smallest and
(b) the largest speed at which cars can move on this track without relying on friction.
Two small plastic spheres are given positive electrical charges. When they are 15 cm apart, the repulsive force between them has magnitude of 0.220N. what is the charge on each sphere
A dockworker applies a constant horizontal force of 85.0N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
What is an angular acceleration
Helium (He), a monatomic gas, fills a 0.012 m3 container. The pressure of the gas is 6.90x 10^5 Pa. How long would a 0.25 hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to internal energy of this gas.
A 35 N hand and forearm are held at a 45 degree angle to the vertically oriented humerus. how much force must be exerted by the forearm flexors to maintain this position
What is the force acting on the electron (magnitude and direction) ? What is the electric field (magnitude and direction ) at the point where the electron is located
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
How many kcal of heat must be withdrawn from 4.56 kg of steam at 125°C to change it to ice at -44.5°C.
The main components of a thermal/steam power plant are: Pump, boiler, steam turbine, condenser and generator. which one operates at higher temperature and pressure
A balloon contains 2.5 L of oxygen gas at 1.0 atm, How much work is done in compressing the balloon at constant pressure
A 3.0 kg block of silver is completely immersed in water. calculate the mass of water displaced by the silver block
the surface of the sun has a temperature of about 5800 k. if the radius of the sun is 7 x 10^8 m, determine the power output of the sun
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