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A spherical mirror has a focal length of +10cm. Find the location and then describe the miage for an object for an object distance of 25cm. Suppose the objects begins slide toward the mirror at velocity v. How fast does the image of the object move?
A projectile is fired straight upward from the Earth's surface at the South Pole with an initial speed equal to one third the escape speed. What is the altitude of the projectile at this instant
An "energy bar" contains 21g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5km/hr? Express your answer using two significant figures.
9 grams of Alum at 200 C and 21 grams of Copper anre dropped into 50 cm^3 of Ethyl Alcohol at 15 C. what was the intitial temp of the Copper
A 6.00?kg ball is dropped from a height of 13.0m above one end of a uniform bar that pivots at its center. The bar has mass 7.50kg and is 6.80m in length. How high will the other ball go after the collision
Three uniform spheres are located at the corners of an equilateral triangle. find the magnitude of the initial acceleration of the third sphere
If the ball was thrown from the street, when does it reach the street again after it passes by window on the way up.
A 70 kg meteorite buries itself 5.5m into soft mud. The force between meteorite and the mud is given by F(x) = (680 N/m^3)x^3, where x is the depth in the mud. What was the speed of the meteorite when it firstly impacted the mud.
A weightlifter lifts 200kg from the floor to a height of 2m in 2s. How much work did the weightlifter perform
A certain transverse wave is described by y(x,t)=Bcos[2pi(x/L - t/T)], where B= 6.80mm , L= 30.0cm , and T= 3.30×10^-2s. Determine the wave's speed of propagation
Blocks A (mass 7.00kg ) and B (mass 10.00kg ) move on a frictionless, horizontal surface. Find the maximum energy stored in the spring bumpers and the velocity of each block at that time. Find the maximum energy
The distance between two successive minima of a transverse wave is 2.45 m. Five crests of the wave pass a given point along the direction of travel every 14.5 s. (a) Find the frequency of the wave. Hz (b) Find the wave speed. m/s
A combustion experiment is performed by burnong a mixture of fuel and oxygen in a constant-volume container surrounded by a warer bath. During the experiment, the temperature of the water rises.
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