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A daring ranch hand sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. The speed of the horse is 9.28 m/s and the distance from the limb to the saddle is 3.67m.
(a) What must be the horizontal distance (m) between the saddle and the limb when the ranch hand makes his move?
(b) How long (s) is he in the air?
An object, mass 2.96kg, moves in a horizontal circle with a radius of 3.8m. The object has the intial velocity of 32.6 m s-1. If the kinetic coefficient of friction between the object and the surface is 0.31, then number of completed revolutions (..
A barge of mass 5.0 104 kg is pulled along the Erie Canal by two mules, How much work is done on the barge by both of these mules together as they pull the barge 150 m along the canal
Two conductors are joined by a long copper wire. Thus A) each conductor must be at the same potential. B) no free charge can be present on either conductor. C) each conductor carries the same free charge.
What mass (in grams) of steam at 100°C must be mixed with 403 g of ice at its melting point, in a thermally insulated container, to create liquid water at 87°C? The specific heat of water is 4186 J/kg•K. The latent heat of fusion is 333 kJ/kg, and..
The heating coil of a hot-water heater has a resistance of 20.0 and operates at 210 V. If electrical energy costs $0.080/kWh, what does it cost to raise 290 kg of water in the tank from 15 °C to 74° C.
You drop a stone into a deep well and hear it hit the bottom 2.60 s later. This is the time it takes for the stone to fall to the bottom of the well.
A meter stick lies on the bottom of a 100 cm long tank with its zero mark against the left edge. You look into the tank at a 30 angle, with your line of sight just grazing the upper left edge of the tank.
The depth of water behind the Hoover Dam in Nevada is 220 m. What is the water pressure at base of this dam? (Neglect the pressure due to the atmosphere.)
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
What is the largest index of refraction that the liquid can have, such that none of the light is transmitted into the liquid and all of it is reflected back into the solid
A wire 83.0 cm long lying along the x axis carries a current of 360.0 mA in the positive x direction, Find the magnitude of the force on the wire
What is true of the net force when 3 or more forces are in a state of equilibrium, and If a force (F) make an angle (theta) with the x-axis, what are the formulas used to the x and y components of this force
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