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A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet.
(a) First, find the speed of the moon.
(b) Determine the centripetal acceleration of the moon.(This is also the acceleration of gravity due to the planet)
(c) Find the mass of the planet.
An object placed on an equal-arm balance scale requires 12 kg to balance it. When object is placed on a spring scale, the spring scale reads 12 kg.
Two girls decide to jump off a diving board. Katherine steps off the diving board. Anna runs straight off the diving board so that her initial velocity is solely horizontal. They both leave the diving board at the same time. Which one lands in the..
A nozzle with a radius of 0.250 cm is attached to a garden hose with a radius of 0.950 cm, Calculate the maximum height to which water could be squirted if it emerges from the nozzle
What is the average speed of a rider on this Ferris wheel.
Throughout a hard sneeze, your eyes may shut for 0.41 s. If you are driving a car at 98 km/h during such a sneeze, how far does the car move during that time.
define the magnitude of the external field. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interva..
find the tangential and centripetal components of the net force exerted on a car (by the ground) when its speed is 38 m/s, and it has accelerated to this speed from rest in 9.5 s on a curve of radius 370 m. The car's mass is 1000 kg.
An asteroid is discovered heading straight toward Earth at 15km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 min, after which the asteroid is moving at 29degree to its original path at a..
A runner of mass m runs around the edge of the horizontal turntable mounted on a vertical, frictionless axis through its center. The runner's velocity relative to earth has magnitude v.
The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981, Determine the initial speed of the projectile
Conservation of energy tells us that energy cannot be created or destroyed. Clearly, energy is required for radioactivity to occur. Where is this energy coming from?
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
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