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A projectile is fired at angle of theta from the horizontal with an initial velocity of Vo. The projectile strikes the ground 5 seconds later at a horizontal distance of 200m. Determine the speed (Vo) with which the projectile was fired, and what is the unknown angle (theta)?
A horizontal aluminum rod 4.8 cm in diameter projects 5.6 cm from a wall. A 1200 kg object is suspended from the end of the rod, Find the shear stress on the rod
a particle at time t 0 is at rest at a distance x0 from the origin and is subjected to a force that is inversely
A spring with a constant 150 N/m is attached to a block with a mass 1.5 kg. What is the maximum displacement the mass will achieve
An electron in the beam of a typical television picture tube is accelerated through a potential difference of 20,000 V before it strikes the face of the tube, what is the eneregy of the electron in joules
An ideal gas is taken through a Carnot cycle. The isothermal expansion occurs at 240°C, and the isothermal compression takes place at 50.0°C. Find the energy expelled to the cold reservoir in each cycle
A hammer strikes one end of a thick iron rail of length 8.5m. A microphone located at the opposite end of the rail detects two pulses of sound, one that travels through the air and a longitudinal wave that travels through the rail.
A 1000 kg car is pushed up a 17.5 degree incline, for a distance of300 m at a constant speed. assume the applied force is directedparallel to the plane. how much work does this force do if the plane is frictionless? has a coeffiecient of friction ..
A concave makeup mirror is designed so that aperson 23 cm in front of it seesan upright image magnified by a factor of two. What is the radius of curvature of the mirror in meters?
A meterstick (L = 1 m) has a mass of m = 0.217 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. Where is the angular acceleration of the meterstick a maximum
A basketball of mass 3 kg and radius 0.20 m rolls without slipping down an incline of angle 30 degrees. Calculate the acceleration of the center of mass
A motorcyclist is able to ride on the vertical wall of a bowl- shaped track . his weight is counteracted by the friction of the wall on the tires. what force increase or decrease if he rides faster.
A bicycle tire pump has a piston with area .44in.2. what pressure does this produce on the air in the pump
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