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A helicopter is traveling at 40 m/s at a constant altitude of 200 m over a level field. If a wheel falls off the helicopter, with what speed will it hit the ground? (g = 9.8 m/s2 and air resistance negligible)
An object placed 35 cm away from a lens projects a real image equal to 55 cm behind the lens. What is the focal distance of the lens? For the example above, what is the magnification of the lens? Not exactly sure what equation to use. Please help..
suppose you wish to fabricate a uniform wire fromnbsp2.50nbspg of copper. the wire is to have a resistance of rnbsp
Derive the speed of the wave water in a shallow pool of water of depth y. You may consider using a method similar to the derivation of the sound wave equation
Determine the minimum time require for the automobile to come to rest and the distsnce it travels on the exite ramp during that time if the exit ramp (a) is straight (b) has a constant radius of curvature of 800 ft.
What is the area (in m2) of the leaf? (b) If, instead, the gold is drawn out into a cylindrical fiber of radius 2.900 ?m, what is the length (in m) of the fiber?
A ball is dropped from the top of a 46.0m -high cliff. At the same time, a carefully aimed stone is thrown straight up from the bottom of the cliff with a speed of 26.0m/s. How far above the base of the cliff does this happen
For your diffraction grating experiment, you need to compute the wavelength of light. Derive the expression for calculating the wavelength () in terms of y1bright. Given the ratio of d to D is 1:300 and also the angle 1 is 4°.
A house has a floor area of 115 m2 and an outside wall that has an area of 24 m2. The earth's magnetic field here has a horizontal component of 2.50 e 10-5 T that points due north and a vertical component of 4.30 e 10-5 T that points straight down..
The moon is at a mean distance Dm = 3.84 x 10^5km from the earth; the sun is at a mean distance Ds = 1.496 x 10^8km. The radius of the moon is Rm = 1.74x10^3km; the radius of the sun is Rs = 6.96 x10^5km.
Find how much ice at a temperature of -21.8oC must be dropped into the water so that the final temperature of the system will be 22.0oC
What is the velocity vPI of the plank relative to the surface of the ice? (Use the following as necessary: vGP, mG, and mP. Indicate the direction with the sign of your answer. Let the positive direction be in the direction that the girl walks.)
You produce an image of the Sun on a screen using a thin lens whose focal length is 28.3 cm. What is the diameter of the image in millimeters
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