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A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 21.0 m/s. The cliff is h = 71.0 m above a flat horizontal beach.
How long after being released does the stone strike the beach below the cliff?
________s
With what speed and angle of impact does the stone land?
_______ m/s
___________° below the horizontal
A solar cell generates a potential difference of 0.094 V when a 560 ? resistor is connected across it, and a potential difference of 0.14 V when a 1100 ? resistor is substituted. What are the emf of the solar cell
Determine the initial rate of heat transfer from a hot pack to a patient due to thermal conduction (through the toweling) when the hot pack is applied
ocean waves with wavelength 1.2 m and period 1.5s are moving past a pier. a boy runs along the pier, in the direction opposite to the motion of the wave, at 3.5 m/s. how many wave crests pass the boy each second?
Light of wavelength 572 nm illuminates a single 0.72 mm wide slit. What is the width of the central maximum
A 100 W lightbulb produces 4.0 W of visible light. What is the light intensity on a wall 3.0 m away from the lightbulb
wo small metallic spheres, each of mass m = 0.220 g, are suspended as pendulums by light strings of length L, How long are the strings
For an equilateral prism, the angle of incidence of 49 degree at boundary 1, Calculate the angle of refraction at boundary 2
A wall is composed of two materials, material 1 has a thickness of 3.49 cm and a thermal conductivity of 0.1 J/msCo while material two has a thickness of 7.01 cm, what is the energy loss per second to the nearest watt
A horizontal bar 2.361 m long with a mass of 91.27 kg is hinged to a wall. What is the angle between the cable and the bar
A jet flying at 125 m/s banks to make a horizontal circular turn. The radius of the turn is 3810 m, Calculate the magnitude of the necessary lifting force
The density of Muriatic acid is 1200 kg per cubic meter. Calculate its specific gravity
a ball with a mass of 10g is swung in a horizontal circular path on a string of length 0.5m. if the balls speed is 4.5m/s, estimate the centripetal acceleration
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