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Suppose a satellite is in a circular orbit 5.425 Earth radii above the surface of the Earth (6.425 Earth radii from the center of the Earth). By how much does it have to increase its speed in order to be able to escape Earth in km/s? [Hint: You need to calculate the orbital speed and the escape speed.]
A 30-kg child rides on a circus Ferris wheel that takes her around a vertical circular path with a radius of 20 m every 22 s. What is the magnitude of the resultant force on the child
A 30.0- kg child swings on a playground swing 3.3 m long. What is the period of her motion, what is the period of the motion
A playground is on the flat roof of a city school, 6.1 m above the street below (see figure). The vertical wall of the building is h = 7.60 m high, Find the speed at which the ball was launched
A 12 lbm bowling ball 8.59 inches in diameter is given a spin of 1.0 revolution per second while traveling down the lane at 17 ft per second. Determine the total translational plus rotational kinetic energy of the ball.
The Big Bang theory states that the beginning of the universe was accompanied by a huge burst of photons. Calculate the peak wavelength of this radiation
If a electron after being accelerated by a potential difference of 100 V enters in a uniform magnetc field of 1T perpendicular. Calculate its radius of circular path described by it
A 10kg object is brought to the moon, where the acceleration due to gravity is only one-sixth of that on earth. What is the mass of the object on the moon
A fan blade, whose diameter is 1.0 m, is turning with an angular velocity of 2.0 rad/s. What is the tangential velocity of a point on the tip of the blade
Two blocks A and B of mass D and E respectively are kept in contact on a frictionless table. what is the force exerted by the expirimenter on A
Communications satellites are placed in orbits so that they always remain above the same point of the earth's surface. A) What must be the period of such a satellite? T= hr B) What is its angular velocity in rad/s?
A two mmeter high tank is full of water. A hole appears at its middle. What is speed of efflux
A 200g mass on the end of a spring is pulled back 3 cm and released. There is a coefficient of friction between the table and mass of 0.7. The resonant frequency is 7.071 rad/sec.
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