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Determine the maximum injection angle, that will result in the greatest downrange distance, R. Assume v = 10 m/s and g is approximated as g = 10 m/s2.
A brick of mass M has been placed on a rubber cushion of mass m. Together they are sliding to the right at constant velocity on an ice-covered parking lot.
A bullet of mass 22 g is fired horizontally from a gun with a velocity of 1150 m/s into a wooden block of mass 8.0 kg sitting on a horizontal table
A steel cable has a cross-sectional area 3.44 × 10-3 m2 and is kept under a tension of 3.33 × 104 N. The density of steel is 7860 kg/m3. Note that this value is not the linear density of the cable. At what speed does a transverse wave move along t..
Light in vacuum is incident on the surface of a slab of transparent material. What is the index of refraction of the transparent material
A solid sphere has a temperature of 527 K. The sphere is melted down and recast into a cube that has the same emissivity and emits the same radiant power as the sphere. What is the cube's temperature in kelvins?
A balloon is filled with helium at a pressure of 2.3×105 Pa. The balloon is at a temperature of 14ºC and has a radius of 0.27 m. How many helium atoms are contained in the balloon
A rock of mass 49 kg accidentally breaks loose from the edge of a cliff and falls straight down. What is the magnitude of the acceleration of the rock
a metal sphere of radius 19 cm has a net charge of 6.0 10-8 c.a what is the electric field at the spheres surface?b if
You are a passenger (m = 108 kg) in an airplane that is accelerating on the runway, beginning to take off. The force between your back and your seat is 405 N. how far does the plane travel as it accelerates to a takeoff speed of 125 m/s
the flash unit in a camera uses a 2 battery to charge a capacitor. the capacitor is then discharged through a
Gas in a cylinder similar to the one shown in the figure moves a piston with area 0.201 m^2 as energy is slowly added to the system. If 2.30 x10^3 J of work is done on the environment and the pressure of the gas in the cylinder remains constant at 1...
A 1000-kg car travelling at a speed of 32 m/s skids to a halt on wet concrete where f_k = 0.3. How long are the skid marks.
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