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a spring is compressed by 2cm and launches a block up an incline (ignore friction). The block travels a maximum distance of 0.5m from where it was launched. If the same spring is compressed by 4cm, and the same block is launched up the same incline, what maximum distance will it travel? Explain, using conservation of energy.
An object consists of a ball of weight W glued to the end of a uniform bar also of weight W. if you release it from rest, with the bar horizontal.
Find out the speed of the satellite
The label on a candy bar says 440 Calories. Assuming a typical efficiency for energy use by the body, how high could she go
You want to shoot a 19cm long arrow parallel to this axle and through the wheel without hitting any of spokes. Suppose that the arrow and the spokes are very thin.
A torsion pendulum is constructed of a copper rod of radius 3 mm and length 50 cm. what is the period of oscillation
How far from the lens should an object be placed so that its (virtual) image is at the near-point distance of 25 if the magnification is 8X
Electrons are ejected from a certain metallic surface with speeds ranging up to 4.2 105 m/s when light with a wavelength of ? = 615 nm is used. What is the work function of the metal?
Three charges, +q, +2q, and +4q, are linked by strings (Assume that the middle charge is fixed in space and the other 2 charges are held there by the tension alone.)
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
A plastic bag is filled with hydrogen at atmospheric pressure and 27.0 oC. Assume that the mass of the bag is negligible, How large a volume of hydrogen (in m3) is required
A person is riding a bicycle, and its wheels have an angular velocity of 12.1 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
A ball is thrown straight upward. At above its launch point, the ball's speed is one-half its launch speed. What maximum height above its launch point does the ball attain
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