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Q1. A propeller spins at 1890 rev/min.
a) what is its angular velocity in rad/s?
b) What is the angular displacement of propeller in 2.60 s?
Q2. Two carts with masses of 10.60 kg and 2.50 kg, respectively, move in opposite directions on a frictionless horizontal track with speeds of 6.70 m/s and 3.50 m/s, in that order. The carts stick together after colliding head-on. Find the final speed of the two carts.
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
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.20×106N, What is the total work done by the two tugboats on the supertanker
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. This moon takes 21.0 days on average to complete one nearly circular revolution around the unnamed planet.
A 7.9cm diameter horizontal pipe gradually narrows to 5.3cm . When water flows through this pipe at a certain rate, compute the volume rate of flow
What is the apparent weight of a 75 kg astronaut.
The plates of a parallel-plate capacitor are 2.50mm apart, and each carries a charge of magnitude 85.0nC. What is the potential difference between the plates
A train siren indicating that the stationary train is ready to leave the station has a frequency of 80 Hz. What frequency is perceived by the occupant of a car traveling away from the train at 30 m/s? The speed of sound in air is 343 m/s.
A model airplane with a mass of 0.757 kg is tethered by a wire so that it flies in a circle 30.9 m in radius, Find the angular acceleration of the airplane when it is in level flight
What distance does baseball move before its release
An inventor claims to have devised a cyclic engine which exchanges heat with reservoirs at 300 K and 540 K, and which can produce 450 J of work per 1000 J of heat extracted from the hot reservoir. Is his claim feasible.
what are the magnitude and direction of its acceleration. find out the magnitude of the charge on the moving particle.
question1a hunter aims straight at a target on the same level 130 m away.a if the bullet leaves the gun at a speed of
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