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A comet is in an elliptical orbit around the Sun. Its closest approach to the Sun is a distance of 4.8 x 1010 meter (inside the orbit of Mercury), determine at which point its speed is 9.6 x 104 m/s. Its farthest distance from the Sun is far beyond the orbit of Pluto.
Find what is its speed when it is 6 x 1012 m from the Sun? (This is the approximate distance of Pluto from the Sun.)
On a unit circle with a diameter of 2 m (r=1 m) there are 2 positive charges of 1 C each, one at the center of both sides of the circle. What is the net force at the top point of the unit circle
a 47.5-g super ball traveling at 25.5 ms bounces off a brick wall and rebounds at 21.0 ms. a high-speed camera records
Find the maximum altitude reached by the rocket.
A 2.00-kg mass object traveling east at 20.0 m/s collides with a 3.00-kg mass object traveling west at 10.0 m/s. How much kinetic energy was lost during the collision
Here is a box on whose surfaces the electric field is measured to be horizontal and to the right, Calculate the electric flux through every face of the box, Calculate the total flux through the box
You are an astronaut, and you observe a small planet to be spherical. What is the mass of the planet
A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the car's centripetal acceleration? What is the centripetal force that acts on the car?
Ray decides to paint the outside of his uncle's house. He uses a 4.0-m-long board supported by cables at each end to paint the second floor. find the force that the left cable exerts on the board
The radius of a black hole is the distance from the black hole's center at which the escape speed is the speed of light. What is the radius of a black hole with a mass five times that of the Sun
You and your friend throw balloons ?lled with water from the roof of a several story apartment house. You simply drop a balloon from rest. How high is the apartment house
The wavelength of the laser beam used in a compact disc player is 483 nm. Estimate the spacing between the slits of the grating
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
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