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During a workout, the football players at State U. ran up the stadium stairs in58 s. The stairs are 150 m long and inclined at an angle of 30 degree. If a typical player has a mass of 105 kg, ignore air resistance and friction. Find the average power output on the way up.
A 0.700-kg ball is on the end of a rope that is 2.50 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, What is the tangential speed of the ball
A woman on a bridge 90.0 m high sees a raft floating at aconstant speed on the river below. She drops a stone fromrest in an attempt to hit the raft. Find the speed of the raft
A cylinder contains a mixture of helium and argon gas inequilibrium at 160°C. (a) What is the average kinetic energy for each type of gas molecule?
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. What is the magnitude of the electric field within the cell membrane
A 4.90?F capacitor that is initially uncharged is connected in series with a 8.00k? resistor, A long time after the circuit is completed (after many time constants) what is the voltage drop across the capacitor
a 1.0-cm-tall object is 20cm in front of a converging lens that has a 10cm focal length. use ray tracing to find the
A block of mass M is sliding down a rough inclined plane with constant velocity v. Find an expression for the angle theta
A uniform electric field of magnitude E = 490 N/C makes an angle of ? = 60.0° with a plane surface of area A = 3.90 m2
A disk with moment of inertia I1 rotates about a frictionless vertical axle with angular speed wi. find the ratio of the final to the initial rotational energy
Concept to find certain type of electronic devices & circuits.
a skater has rotational interia 4.2 kg-m2 with his fists held to his chest and 5.7 kg-m2 with his arms outstretched.
Find out the work completed by neoconservative forces in stopping plane. At the nozzle exit, diameter is 2.5 cm and the density is 1.29kg/m^3. What is the speed of the air as it leaves the nozzle.
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