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A homogeneous chain (i.e., mass varies with the length), having a length L and mass m, is located on an inclined surface (angle), such that half of its length is hanging vertically. The friction factor between the chain and the surface is n. If you release the chain calculate:
a) the work of the friction force?
b) the velocity of the chain at the time the chain leaves the horizontal surface?
Cube of ice is taken from the freezer at -8.5°C and placed in a 75-gram aluminum calorimeter filled with 300.0 grams of water at room temperature of 20.0°C. The final situation is observed to be all water at 17°C. What was the mass of the ice cub..
250mL of water at 20.0 ?C is placed in the freezer compartment of a refrigerator with a coefficient of performance of 6.00. How much heat energy is exhausted into the room
A closely wound, circular coil with radius 2.40cmhas 850 turns. What must the current in the coil be if the magnetic field at the center of the coil is 0.0600T
You are designing a diving bell to withstand the pressure of seawater at a depth of 220 m. What is the gauge pressure at this depth? (You can ignore changes in the density of the water with depth.)
Two metal plates are held together by two steel rivets, each of diameter 0.24 cm and length 1.3 cm. How much force must be applied parallel to the plates to shear off both rivets?
The orbital angular momentum of an electron has a magnitude of 4.716*10^-34 kg*m^2/s. What is the angular-momentum quantum number l for this electron
A daredevil on a motorcycle leaves the end of a ramp with a speed of 38.5 m/s, what is the maximum height that he reaches
A steel ball is dropped onto a hard floor from a height of 1.55 m and rebounds to a height of 1.52 m. Calculate its acceleration during contact with the floor if that contact lasts 0.0800 ms
A concave mirrior is to form an image of the filament of a headlight lamp on a screen 8.00 m from the mirrior. The filament is 6.00 mm tall, Is the image upright or inverted
a cart is propelled over an xy plane with acceleration components ax 4.0 ms2 and ay -2.0 ms2. its initial velocity
A bicycle wheel is rotating at 45rpm when the cyclist begins to pedal harder, What is the wheel's angular velocity, in rpm, 8.0s later
Assume that the net horizontal force is due to rolling friction only and take free-fall acceleration to be = 9.80 .What is the coefficient of rolling friction for the tire under low pressure.
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