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A system gains 2960 Joule of heat at a constant pressure of 1.31× 105 Pa, and its internal energy increases by 4040 Joule. Determine the change in the volume of the system, and is it an increase or a decrease?
A wheelchair athlete is training on a stationary ergometer. Her wheel's angular velocity is 3 rev/s and diameter is 80.0 cm. What is the linear velocity at the wheel's circumference
A car weighing 8600 N moves along a level highway with a speed of 70 km/h. The power of the engine at this speed is 66 kW. what is the new speed of the car on the hill
A diver of mass 68 kg stands at the end of a uniform diving board of mass 16 kg and length 4:5 m. The board is attached by two pedestals that are 1:5 m apart, as shown in the gure.
is a transformer has 100 primary turns and 200 secondary turns. what is the current in the secondary coil if the
A uniform plank of length 5.70 m and weight 215 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support. To what distance x can a person who weighs 452 N walk on the overhanging part of the plank before it just be..
A simple pendulum has a length L and a mass m. At its highest point, the pendulum mass is 0.25L above its lowest point. What is the speed of mass when it is at its lowest point
a person traels by car from one city to another with different constant speeds between pairs of cities. she drives for
a ray of light is incident on the mid-point of a glass prismsurface at an angle of 25 degrees with the normal. for
Write out the constants for b (B1 and B2) in terms of the previous constants for a Do the same for c) in terms of the constants for b), the constants in d in terms of those for c and finally the constants for a) in terms of those from d.
When the minimum angle of deviation of a light ray passing through an isosceles triangular prism is 36 degrees and its vertex angle is 40 degrees, The angle of refraction of the light ray in the prism, in degrees
a golf ball rolls off a horizontal cliff with an initial speed of 11.4 ms. the ball falls a vertical distance of 15.5 m
Calculate the density of a bar of gold with a length
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