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There are 2 spaceships, A and B, that approach the earth from opposite directions. Now according to an observer on spaceship A,she approaches the earth at 0.7c. According to an observer onspaceship B, he approaches the earth at 0.85c. What will be the speed of spaceship A according to an observer on spaceship B? Doesan observer on spaceship A measure a different or same value for the speed of spaceship B? Please also explain the steps.
A sailboat on the ocean has a mast of height 18.5 m. When viewed through a pair of binoculars the mast has an angular size of 0.065 rad. what is the distance between the observer and the sailboat
Multiple-Concept Example 10 provides one model for solving this type of problem. Two wheels have the same mass and radius of 4.2 kg and 0.39 m, respectively. Find the net external torque that acts on each wheel
A direction that causes the rod to rotate on the axle
A charge of 3.0 micro coulombs and a second charge are initially far apart. If it takes 29 J of work to bring them to a final configuration in which the 3.0 micro coulombs is at x = 1.0 mm,
One string of a certain musical instrument is 72.0 cm long and has a mass of 8.76 g . It is being played in a room where the speed of sound is 344 m/s . A)To what tension must you adjust the string so that, when vibrating in its second overtone, i..
A child rides a horse in a circular path on a merry-go-round. how far is the horse from the center of the merry-go-round
A gold prospector finds a solid rock that is composed solely of quartz and gold. The mass and volume of the rock are, respectively, 13.1 kg and 2.08 × 10-3 m3, Find the mass of the gold in the rock
The 15g head of a bobble-head doll oscillates in SHM at a frequency of 4.0Hz. What is the head's time constant
A lady pushes down on a 35.0 kg crate (constrained to move along a horizontal floor) at an angle of 47.3 degrees to the horizontal with a force of 125N along a frictionless surface. what is the normal force of the surface on the crate
A juggler throws a ball with an initial horizontal velocity of+1.1 m/s and an initial verticle velocity of +5.7 m/s. What is itsacceleration at the top of its flight? Make sure to consider thesign when responding. Consider the upward direction asposi..
A rope is used to pull a 3.57 kg block at constant speed 3.58 m along a horizontal floor. What is the work done by the rope's force
Starting with an initial speed of 5.00 m/s at a height of 0.335 m, a 1.50-kg ball swings downward and strikes a 4.60-kg ball that is at rest, How high does each ball swing after the collision
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