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A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 110 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, what is the new pressure o
The blocks A and B are connected by a piece of spring. Block B rests on a smooth inclined plane of 21 degrees and block A hangs vertically. Calculate the acceleration of the system if the mass of b
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 1.50 m long conducting wire. A charge of 64.0 µC is placed on one of the conductors. Assume the surf
In a model AC generator, a 501 turn rectangular coil 8.0 cm by 30 cm rotates at 117 rev/min in a uniform magnetic field of 0.6 T. What is the maximum emf induced in the coil?
What is the height h of the center of mass of the system as a function of x, where x is the height of the soda remainin in the can?
If the magnitude of the resultant force acting on the bracket is 370 directed along the positive axis, determine the magnitude of.
What velocity would a proton need to circle Earth 1 000 km above the magnetic equator, where Earth's magnetic field is directed horizontally north and has a magnitude of 4.00 × 10-8 T?
Suppose the roller coaster (h1 = 31 m, h2 = 13 m, h3 = 25) passes point A with a speed of 1.00 m/s. If the average force of friction is equal to one third of its weight, with what speed will it rea
A baseball pitcher throws a fastball at a speed of 43 m/s. The acceleration occurs as the pitcher holds the ball in his hand and moves it through an almost straight-line distance of 3.9 m. Calculat
A television set connected to a 120 V outlet consumes 75 W of power. How much current flows through the television? How long does it take for 10 million electrons to pass through the television?
A bucket of water with a mass of 2.0 kg is attached to a rope that is wound around a cylinder. The cylinder has a mass of 3.0 kg and is mounted horizontally on frictionless hearings. The bucket is
When a 58 g tennis ball is served, it accelerates from rest to a constant speed of 45 m/s. The impact with the racket gives the ball a constant acceleration over a distance of 47 cm. What is the ma
If the bullet-block system compresses the spring by a maximum of 82.0 cm, what was the speed of the bullet at impact with the block?"
If a car is traveling north at 88km/h and then turns east while continuing to move at 88km/h, what changes the velocity or the speed?
Assume that the air in the bubble is always in thermal equilibrium with the surrounding water, and assume that there is no exchange of molecules between the bubble and the surrounding water. What is
An engineer wishes to mount an axle on a gear (modeled as a solid disk of mass M and radius R). At what distance from the center of the gear should he mount the axle?
Find the direction of the force at the support point. Find the magnitude of the force at the left-hand end. Find the direction of the force at the left-hand end.
A projectile is fired staright upward at 141m/s. How fast is it moving at the instant it reaches the top of trajectory? How long does it take the projectile to reach the top of its trajectory? How
A 62-kg person on skis starts from rest down a hill sloped at 40° from the horizontal. The coefficient of friction between the skis and the snow is 0.10. After the skier had been moving for 5.0
Find the rocket's final speed assuming it moves straight upward near the surface of Earth where the gravitational field g is constant.
A candle is placed 15.0 cm in front of a convex mirror. When the convex mirror is replaced with a plane mirror, the image moves 8.5 cm farther away from the mirror. Find the focal length of the conv
Automobile engine slows down from 4500rpm to 1200rpm in 2.5 s. Calculate (a) its angular acceleration, assumed constant, and (b) the total number of revolutions the engine makes in this time.
If an rac man uses a long handled wheel brace (1.5m long) to help him remove a wheel nut off a lorry and he pulls on the handle with a force of 400n, what is the size of the moment produced? includ
A child exerts a tangential 41.0 {N} force on the rim of a disk-shaped merry-go-round with a radius of 2.00 {m}.If the merry-go-round starts at rest and acquires an angular speed of 0.0900 {rev/s} i
Assume the positive x axis is directed to the right. Find the magnitude and direction of the net displacement of the player using the graphical method.