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Given: Mearth = 5.98 × 1024 kg Rearth = 6.37 × 106 m A satellite of mass 649 kg is in a circular or- bit at an altitude of 564 km above the earth’s surface. Because of air friction, the satellite eventually is brought to the earth’s surface, it hits the earth with a velocity of 3 km/s. Let the gravitational potential energy be zero at r = 1. The universal gravitational constant G = 6.67259 × 10?11 Nm2/kg2. What is the total energy of the satellite in orbit?
One kilogram of dry air is warmed from 20ºC to 70ºC under a constant pressure of 1atm. Calculate the change in internal energy
A dart is thrown horizontally with an initial speed of 12 m/s toward point P, the bull's-eye on a dart board. How far away from the dart board is the dart released
Matthew pulls his little sister Sarah in a sled on an icy surface (no friction) with a force of 60 N at an angle of 600 upward from the horizontal
An air puck of mass 0.029 kg is tied to the string and allowed to revolve in a circle of radius 2.0m on a frictionless horizontal surface. The other end of the string passes through a hole in the center of surface, and a mass of 2.6 kg is tied to it...
On a clear day at a certain location, a 100 V/m vertical electric field exists near the Earth's surface. Compute the energy density of the electric field
q1. suppose a chimpanzee swings through the jungle on vines. if it swings from a tree on a 13 m long vine that starts
An astronaut is traveling in a space vehicle that has a speed of 0.480c relative to Earth. The astronaut measures his pulse rate at 76.0 per minute. What pulse rate does the Earth observer measure
A lightweight string of length 60cm is attached to the ceiling at points separated by distance. Three objects of equal mass are hung from the string, separating the string into 4 equal segments of length L. If θ = 40, find the measure of angle φ a..
A 78.3 kg weight-watcher wishes to climb a mountain to work off the equivalent of a large piece of chocolate cake rated at 522 (food) Calories. How high must the person climb
A square coil of wire with 15 turns and an area of 0.40 m2 is placed parallel to a magnetic field of 0.75 T. What is the magnitude of the average induced emf
What is the turntable rotation angular velocity
A helium atom (mass of helium atom = 6.646 x 10-27 kg), initially at rest, emits a photon of energy 40.8 eV. What is the speed of the Helium atom after releasing this photon
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