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An unmanned spacecraft of mass 459 kg, is in a circular orbit around the earth, observing the earth's surface from an altitude of 58.3km.
What is the orbital speed of the spacecraft?
What is the period of the spacecraft's orbit?
What is the escape velocity of the spacecraft?
To the dismay of scientists, an electrical fault causes an on-board thruster to fire, decreasing the speed of the spacecraft by 17.3 . If nothing is done to correct its orbit, with what speed will the spacecraft crash into the earth's surface?
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be the volume (in cubic centimeters)
Physics - Classical Mechanics - Inclined Plane, A packing crate is placed on a plane inclined at an angle of 350 from horizontal. If the coefficient of static friction
q1. a bumper car with mass m1 108 kg is moving to the right with a velocity of v1 4.6 ms. a second bumper car with
As a spacecraft approaches a planet, the rocket engines on it are fired (turned on) to slow it down so it will go into orbit around the planet. compute how long (in minutes) must the engines be fired
The length of a beam increases by 2.45mm when its temperature is raised from 27.74oC to 76.79 oC. What is the length of the beam at the initial temperature
A 10.0-kW laser with a beam area of 10.0 cm2 is incident normally on a mirror. Assuming perfect reflection, what is the force due to radiation pressure on the mirror
A young male adult takes in about 4.46 x 10-4 m3 of fresh air during a normal breath. Fresh air contains approximately 21% oxygen. find the number of oxygen molecules in a normal breath
The current in a coil drops from 3.9 A to 2.7 A in 0.52 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
A boy drags his 8.00 kg sled at constant speed up a 10.0 degree hill. He does so by pulling with a 40.0-N force on a massless rope attached to the sled. find the coefficient of kinetic friction between sled and snow
Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.
A 2.4kg toy locomotive is pulling a 1.6kg caboose. The frictional force of the track on the caboose is 0.54N backward all along the track. If the train is accelerating forward at 3 m/s2, what is magnitude of the force exerted by the locomotive on ..
A sphere of radius r starts from rest and rolls without slipping along a curved surface, Find the final speed v of the sphere's center of mass
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