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From the ground a projectile is fired with a velocity of 30m/sat 30 degrees above the horizontal. How long will the projectile take to return to the ground?
In a specific heat experiment 210.0 grams of aluminum (C=913.0 J/kg.K) at 100.0°C) is mixed with 36.0 g water at 20.0°C. Find the entropy change of the water
Frank and Mary are twins, and Mary wants to travel to our nearest star system, Alpha Centauri (4.30 lightyears away). How old will Frank be when she returns
A force of 400.0 N is exerted on a 1,250 kg car while moving a distance of 3 m. How much work was done on the car
point charges of 28.0 microc and 46.0 microc are placed 0.500 m apart.a at what point along the line connecting them is
Find out the velocity of the plane relative to the earth.
At high noon, the Sun delivers 1.10-kW to each square meter of a blacktop road. If the hot asphalt loses energy only by radiation, what is its equilibrium temperature?
A proton moving at 3.1×105m/s to the right enters a region where a uniform electric field of magnitude 53kN/C points to the left
Consider a thin ring of radius a with uniform charge density and total charge Q. The ring is cut in half across the diameter and the two halves superimposed to double the effective charge density. Calculate the electric field at a point 4a from the r..
A siren at rest has a frequency f0. Standing at a crosswalk, a student hears a frequency f' from the siren in an approaching police car. find the speed of the car
A 27 pound meteorite struck a car, leaving adent 10 cm deep in the trunk. Ifthe meteorite struck the car with a speed of 250 m/s, what was the magnitude of its deceleration
A spherical brass shell has an interior volume of 1.26 x10-3 m3. Within this interior volume is asolid steel ball that have a volume of 0.89 x 10-3m3. What is the volume of mercury that spills out of the hole
A round loop of diameter 12 cm, carrying a current of 0.40 A, is placed inside a magnetic field B = 0.20 i T + 0.40 j T. What is the potential energy of the loop
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