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A truck is removed from the mud by attaching a line between the truck and the tree. When the angles are 20 degrees at the truck and tree a force of 40 lb is exerted at the midpoint of the line. What force is exerted on the truck?
Your friend, who is exactly the same age as you, travels at a speed of 0.9990c to a star 25 light-years away. How long does she measure for the time she is away
A 3.6- cm-radius ball rolls down an inclined plane from rest at the top. The angular acceleration of the rolling ball about its center is 150 rad/s2, How long is the plane
A Carnot engine operates between the temperatures 420 K and 300 K. How much heat must be given to the engine to produce 2500 J of work
A rock is dropped into an abandoned mine, and a splash is heard 4s later. how fast the rock was falling when it hit the water
An athlete executing a long jump leaves the ground at a 35° angle and lands 7.30 m away.
A lead block is suspended from the underside of a 0.8 kg block of wood of density of 720 kg/m3. determine the mass of the lead block
The terminal speed of a sky diver is 124 km/h in the spread-eagle position and 338 km/h in the nosedive position. Assuming that the diver's drag coefficient C does not change from one position to the other
A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. What is the initial velocity of the green car
A house at the bottom of a hill is fed by a full tank of water 6.0 m deep and connected to the house by a pipe that is L = 83m long at an angle of ? = 67? from the horizontal. Determine the water gauge pressure at the house
A force in the negative direction of an x axis is applied for 24 ms to a 0.40 kg ball initially moving at 10 m/s in the positive direction of the axis. What is the ball's speed just after the force is applied
A certain fluid has a density of 1080 kg/m3 and is observed to rise to a height of 1.8 cm in a 1.0-mm-diameter tube. Calculate the surface tension of the fluid
The electric field everywhere on the surface of a thin spherical shell of radius 0.780m is measured to be equal to 940 N/C and points radially toward the center of the sphere.
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