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In an internal combustion engine, air at atmospheric pressure and a temperature of about 20 ?C is compressed in the cylinder by a piston to 18.0 of its original volume (compression ratio 8.0).
Estimate the temperature of the compressed air, assuming the pressure reaches 38atm.
A slit of width 0.24mm is illuminated with monochromatic light of wavelength 550nm , and a diffraction pattern is formed on a screen 1.4m from the slit. What is the width of the central maximum
The coefficient of kinetic friction between block and ramp
Waves from a radio station have a wavelength of 308 m. They travel by two paths to a home receiver 77.0 km from the transmitter. What is the minimum distance from the mountain to the receiver
An rms voltage of 91 V is applied to a purely resistive load of 6.00 . Find values for the maximum voltage applied and the rms current supplied
A train (an engine and four cars) is accelerating at 1.60 m/s^2 . The mass of each car is 3.60 x 10^4 kg, What is the force of the first car on the second car
What is the speed of the wave?
An object that hangs form the ceiling of a staionary elevator by an ideal spring scilliates with a period T. If the elevator accelerates upward 2g , what will the period of oscillation of the object ?
A disk with a rotational inertia of 5.6 kg?m2 and a radius of 0.53 m rotates on a frictionless fixed axis perpendicular to the disk, The angular acceleration of the disk in rad/s2 is:
How far ahead of the film should the lens be if the object to be photographed is 13 m away.
A boy catches - with bare hands and his arm extended - a 0.16 kg baseball coming directly toward him ar a speed of 25 m/s. what is the average force the boy's hand feel while catching the ball
At the equator, the earth's field is essentially horizontal; near the north pole, it is nearly vertical. What current should you pass through the coil, to produce a net field in the center of the tank that has a dip angle of 62
Small spheres of diameter 1.03 mm fall through 20°C water with a terminal speed of 1.00 cm/s. Calculate the density of the spheres
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