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1. Consider two planets in space that gravitationally attract each other. If the mass of one planet is increased six-fold and the mass of the other is doubled and the distance between them is also doubled, then the force between them changes by what factor?
Two stationary positive point charges, charge 1 of magnitude 3.10 nC and charge 2 of magnitude 1.74 nC, are separated by a distance of 36 cm. An electron is free from rest at the point midway between the two charges, and it moves along the line con..
A baseball (m = 148 g) approaches a bat horizontally at a speed of 41.5 m/s (93 mi/h) and is hit straight back at a speed of 45.9 m/s (103 mi/h).
A block starts with a certain speed at the top of a frictionless inclined plane with an unknown angle to the horizontal. To calculate the time required for the block to reach the bottom of the plane.
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
The coefficient of friction between a certain brass block and a large revolving turntable is μ = 0.24. What is the period of rotation of the turntable
A 2260 kg satellite used in a cellular telephone network is in a circular orbit at a height of 710 km above the surface of the earth. What is the gravitational force on the satellite
At one instant a bicyclist is 40m due east of a park's flagpole, going due south with a speed of 10m/s. Then 30.0s later, the cyclist is 40m due north of the flagpole.
Two blocks are connected by a string. The smooth inclined surface makes an angle of 35 degrees with the horizontal, and the block on the incline has a mass of 5.70 kg. The mass of the hanging block is m= 2.90 kg. Find the direction of the hanging blo..
What is the magnitude of the magnitic filed.
The largest building in the world by volume is the Boeing 747 plant in Everett, Washington. It measures approximately 634 m long, 709 yards wide, and 108 ft high. a)What is its volume in cubic feet? b) Convert your result from part A to cubic mete..
A large capacitance of 1.20 mF is needed for a certain application. Calculate the volume of Teflon alone in the capacitor
a hiker throws a stone from the upper edge of a vertical cliff. the stone's initial velocity is 25m/s directed at 40 degrees. with the face of the cliff. whats the height of the cliff?
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