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A 28kg rock approaches the foot of a hill with a speed of 15 m/s. This hill slopes upward at a constant angle of 40 degrees above the horizontal, the coefficients of static and kinetic friction are .75 and .20.
Use energy conservation to find the max height above the foot of the hill reached by the rock?
A bullet with mass 4.85 g is fired horizontally into a 2.040-kg block attached to a horizontal spring, Find the initial speed of the bullet-block system
A proton (charge = 1.6x10-19) travels through a magnetic field of 1.78T with a velocity of 2.3x105 m/sec. What is the magnitude of force experienced by the proton
A sprinkler mounted on the ground send out a jet of water at 30 degrees angle to horizontal. How far does the water travel before it hits the ground
A 0.65 percent C hypoeutctoid plain carbon steel is slowly cooled from about 950°C to a temperature just slightly above 723°C. calculate the weight percent austenite and weight percent proeutectoid ferrite in this steel. Explain it.
A coin 2.1 cm in diameter is held 25 cm from a concave spherical mirror of 28 cm radius of curvature. What is the diameter of the image
Suppose you are riding a stationary exercise bicycle, and the electronic meter indicates that the wheel is rotating at 9.1 rad/s, For how many minutes have you been riding your bike
Suppose one gallon of gasoline produces 1.1 108 J of energy, and this energy is sufficient to operate a car for 16 miles. how many miles would the car go on a single tablet
Since you are pulling up a little on the crate, the floor doesn't have to support as much weight. When you are pulling up on the rope as described above, what is the upward force that the floor exerts on the crate.
a 20 kg cart that is to be rolled up a 5 meter long 2 meter high ramp. what would be its velocity when it reached the bottom
Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 4735 kg), which is made of steel (? = 7810 kg/m3). What is the buoyant force on one ping-pong ball in water
A parallel-plate capacitor has a plate area of 1cm^1 and a plate separation of 2.5 mm. To obtain an electric field of 1.0*10^6N/m between the plates, the magnitude of the charge on each plate should be.
An object placed 2.6 meters in front of a mirror produces an inverted image of one half the size. find Is it convex or concave
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