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Q. A satellite used in a cellular telephone network has a mass of 1890 kg and is in a circular orbit at a height of 820 km above the surface of earth.
What is the gravitational force on satellite? Take the gravitational constant to be = 6.67×10^-11 Nm^2/kg, the mass of the earth to be = 5.97×10^24 kg, and the radius of the Earth to be = 6.38×10^6 m.
First work out the momentum before and after hitting the table. Don't forget the gravitational force.
A car carrying a 77-kg test dummy crashed into a wall at 27m/s and is brought to rest in 0.1 s. demonstrate that the average force exerted by the seat belt on the dummy is 18,760N.
A box of books weighing 334 N is shoved across the floor by a force of 479 N exerted downward at an angle of 33° below the horizontal. What is the maximum coefficient of kinetic friction between the box and the floor that allows the box to move with ..
What is a quantum well: give an example of structure, growth method to make quantum wells and quantum states i.e. outline quantization using diagrams
A ranger in a national park is driving at 52 km/h when a deer jumps onto the road 86 m ahead of the vehicle. After a reaction time of t s, the ranger applies the brakes to produce an acceleration of -2.9 m/s2.
A 1.78 m long air column is open at both ends. The frequency of a certain harmonic is 828 Hz, and the frequency of the next-higher harmonic is 920 Hz. find out the speed of sound in the air column.
A proton is initially at rest at a point where the potential is 459 V. Sometime later the proton is at a point where the potential is 218 V. If no force other than an electrostatic force acts on the proton, what is its final kinetic energy.
Two people with a combined mass of 120kg hop into an old car with worn-out shock absorbers. This causes the springs to compress by 8.30 cm. When the car hits a bump in the road, it oscillates up and down with a period of 1.70s.
What are the displacement and velocity of the point on the cord. What is the magnitude of the acceleration of one of the liners toward the other because of their mutual gravitational attraction.
What is size of the gravitational force on the moon
Estimate the position of C.G or fulcrum & the masses of persons on a 16 feett sea saw, under balanced condition.
Compute the magnitude & direction of the current.
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