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A heat engine consists of max theoretical efficiency of 25% if the high temperature reservoir is at Th=127 C. i) At what would be the temperature of the low temperature reservoir, Tc this were a Carno
A typical nuclear power plant produces electricity at the rate of 900 MW. The efficiency of transforming thermal energy to the electrical energy is and the plant runs at full capacity for 80% of the
A straight rod comprises of a 1.44 cm-long piece of aluminum joined to a 2.61 cm long piece of steel. Determine by how much will the length of this rod change when its temperature is raised from 12&
A car tire consists of V = 0.015 m^3 on a day if the temperature is 5 C and the atmospheric pressure is 1.02 atm. Beneath such conditions the gauge pressure is measured to be 1.7 ATM. After the car
A mass of 0.300 kg oscillates on a spring having force constant 2.50 N/m and is subjected to the damping force Fx = -bvx. Determine the frequency of oscillation when b = 0.900 kg/s? For what value o
The crankshaft in a race car goes from rest to 3100 rpm in 2.6 s. i) Determine the angular acceleration of the crankshaft?
A simple pendulum oscillates having frequency f. Determine its frequency when it is accelerated at 0.5g (a) upward (b) downward?
1.5 moles of an ideal diatomic gas are compressed isothermally to one third times the initial volume at 27 C. Determine work, heat, change in internal energy and change in the entropy.
The horizontal distance of point X from the base of cliff (directly below the point of release) is 30 times the radius of the circle on which the stone is whirled. Find out the angular speed of the
The length of each and every rod is 0.70 m, and the angular speed is 4.6 rad/s. Determine the kinetic energies of rod A with its joined particle and of rod B.
Planet X consists of five times the diameter and six times the mass of the earth. Determine the ratio gx:ge of the gravitational acceleration at the surface of Planet X to the gravitational accelera
A square current-carrying loop is positioned in a uniform magnetic field B, having the plane of the loop perpendicular to the direction of the field. The dashed line is the axis of rotation. The mag
The coefficient of static friction among the ladder and the ground is 0.36. When your mass is four times that of the ladder, determine how high can you climb before the ladder starts to slip?
A mass of 1 kg is situated on the x-axis 1m to the left of the origin. A mass of 3 kg is 2m to the right of the origin. A mass of 2 kg is 3m above the origin on the y axis. Determine the center of m
(i) Determine the constant angular acceleration? (Point out direction by the sign of the angular acceleration.)
Find the angular speed of the wheel. (Suppose that there is no slipping of the surfaces in contact throughout the rolling motion.)
Assume that the electric potential energy lost through the system is carried off by a photon which is emitted throughout the process. Determine its wavelength?
A block of 1.10 kg is joined to a spring having spring constant 17 N/m. While the block is sitting at rest, a student strikes it with a hammer and almost instantaneously gives it a speed of 46 cm/s
Determine how far and in what direction does the object move in 0.200 s, supposing that it moves freely and that the drag force on it from the liquid is negligible?
A police officer in a patrol car parked in a 70 km/h speed zone views a passing automobile traveling at a slow, constant speed.
Determine the angular speed (the magnitude of angular velocity) of the bacterial motor?
The mass of moon is 7.4x10^22 kg and it orbits 3.8x10^8 m from the earth. Determine the angular momentum of the moon about the earth?
After making 2828 revolutions, its angular speed is 136 rad/s. (i) Determine the initial angular velocity of the turbine?
An object is dropped from rest from a height of 5.3 × 106 m above the surface of the earth. When there is no air resistance, determine its speed if it strikes the earth?
The speed of person is v = 2(pi)R/T. Where T is the rotational period of the cylinder. (The time to complete a full circle) Determine the maximum rotation period T of the cylinder which would preven