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Two stars are at rest 1.0×1014m apart. This is about 10 times the diameter of the solar system. The first star is the size of our sun, with a mass of 2.0×1030kg and a radius of 7.0×108m . The second star has mass 9.0×1030kg and radius of 1.19×109m . Gravitational forces pull the two stars together. What is the speed of each star at the moment of impact?
A 0.45 caliber bullet (m = 10.7 g) is fired into a large block of wood (M = 0.750 kg) so that the bullet becomes lodged in the block. What is the speed of the block after the collision
Sound with a frequency of 466 Hz travels through steel. What is the speed of the sound in steel?
A certain automobile engine delivers 2.54 ? 104 W (34.0 hp) to its wheels when moving at a constant speed of 25.0 m/s ( 56 mi/h)
A positron is a particle with the same mass and magnitude charge as an electron, but a positron has a positive charge. how fast is the positron moving
The hypotenuse of a right triangle measures 11.5. what are the lengths of the other two sides
A field mouse trying to escape a hawk runs east for 6.0m , darts southeast for 3.8m , then drops 1.8m down a hole into its burrow
A 0.300 kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.750m/s when it makes a head-on collision with a stationary 0.150 kg glider, Find the final kinetic energy of first and second glider
A 3.4-m-tall, 40-cm-diameter concrete column supports a 2.0×105kg load, By how much is the column compressed
You have two coils and want to determine their mutual inductance. You do a quick measurement, What is the mutual inductance
The planet Mercury has a mass that is 5.00% of that of Earth, and its gravitational acceleration is gmercury = 3.70 m/s2. a) How long does it take for a rock that is dropped from a height of 2.63 m to hit the ground on Mercury?
A thing rod of mass M and lenght l is suspended from a frictionless pivot at its upper end. How high does the bottom of the rod swing
Using Newton's Version of Kepler's Third Law II Part A Pluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700 kilometers. Calculate the combined mass of Pluto and Charon. Express your answer using two significant figures. ..
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