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A planet's moon travels in an approximately circular orbit ofradius 9.0 107 m with a period of 6 h 34 min. Calculate the mass of the planet from this information.
An electric eel develops a potential difference of 490V , driving a current of 0.85A for a 1.0 ms pulse. Find the total energy of this pulse
The deepest point in the ocean is in the Mariana Trench, about 11 km deep, in the Pacific. The density of seawater at the surface is 1.03 X 10^3 kg/m^3. Find its density at the bottom
A 60 kg skier is in a tuck and moving straight down a 30 degree slope. What is the resultant of the external forces that act on the skier
After falling from rest from a height of 30m, a 0.5 kg ball rebounds upward, reaching a height of 20 m. what average force was exerted on the ball
Two disks are rotating about the same axis. Disk A has a moment of inertia of 9.10 kg·m2 and an angular velocity of +8.10 rad/s. What is the moment of inertia of disk B
A baseball m = 0.56 kg is spun vertically on a massless string L = 0.94 m. The string can only support a tension of T = 9.4 N before it will break. What is the maximum speed at the top of the loop in m/s
Suppose a flat roof has a surface area of 1.18000×102 m2. Presume the air inside the building (and under the roof) is at atmospheric pressure, 1.01325×105 Pa, What is the force with which the air inside the house pushes the roof upward
A long, straight wire carries a current of 4 A to the right. Next to the wire is a square loop with sides 1.0 m in length. Calculate the magnitude of the net force acting on the loop
A 750g aluminum pan is removed from the stove and plunged into a sink filled with 10.0kg of water at 20.0C. What was the initial temperature of the pan
q1. a 4.00-kg model rocket is launched expelling 54.9 g of burned fuel from its exhaust at a speed of 690 ms. what is
A 1530 kg car is traveling with a speed of 14.5 m/s. What is the magnitude of the horizontal net force
A spaceship approaching an asteroid at a speed of 0.6c launches a scout rocket with speed 0.4c. At what speed is the scout rocket approaching the asteroid
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