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Q. A person lifts a 950 N box by pushing it up an incline. If the person exerts a force of 350 N along the incline, what is the mechanical advantage of the incline?
Q. A uniform sphere with mass 60.0 is held with its center at the origin, and a second uniform sphere with mass 75.0 is held with its center at the point = 0, = 3.00. What is the magnitude of the net gravitational force due to these objects on a third uniform sphere with mass 0.520 placed at the point = 4.00, = 0?
What are the first, second, and third frequencies audible from a 20cm long organ pipe when (1) only one end is open and when (2) both ends are open. The speed of sound through the air inside the organ pipe is 343 m/s. (Hint: if a harmonic does not..
What will be its length and height at rest
Ann was reaching up to grab a box of cereal that was on top of the refrigerator. She had extended her arm as well as stood on her tip-toes to reach the box. Which primary muscle allowed Ann to extend her elbow and which 2 primary muscles allowed h..
Presume your local government wants to raise your taxes in order to support the construction of wind and solar power plants that can give your town with low-polluting energy and help decrease your town's dependence on fossil fuels for energy. Would y..
What is pressure in the cylinder
What is magnitude of induced emf between the ends of beam
A small, 300 {rm g} cart is moving at 1.30 {rm m/s} on an air track when it collides with a larger, 3.00 {rm kg} cart at rest. After the collision, the small cart recoils at 0.890 {rm m/s}.
Compute Earth's gravitational force on the Shuttle astronauts while orbiting at an altitude of 220 miles (or 354 km) above Earth's surface.
Assume that a 16.5 m/s wind is blowing across the roof of your house. The density of air is 1.29 kg/m3. Conclude the reduction in pressure (below atmospheric pressure of stationary air) that accompanies this wind.
How to find the position and height of an image
If, on other hand, she first kicks it to player 2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y.
A 2.10kg snowball is fired from a cliff 8.55 m high with an initial velocity of 11.90 m/s, directed 47.0° above the horizontal. (a) Using energy techniques, find speed of the snowball as it reaches the ground below the cliff. What is that speed (b) i..
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