The whirling stone's direction of motion keeps changing. if it moves faster does its direction also change faster? Does this indicate 'a' and 'v' directly or inversely related? Consider whirling the stone on a shorter string ( smaller radius) for a givens speed, does the stone change its direction at a greater or lesser rate? Are 'a' and 'r' therefore related directly or inversly ?

Q: What is the direction of the gravitational acceleration of an object that is freely moving upwar

A: The gravitational force between the Earth and the object is attractive force. So the gravitational…

Q: A 25g ball is swinging at the end of a rope in a circle. If the tension in therope is 5N, and the…

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A:

Q: An eagle is flying horizontally at 2.18m/s when the fish in her talons wiggles loose and falls into…

A: Write the given data. ux=2.18 m/suy=0y=8.46 m

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A: The centripetal force is a force that acts on a body moving in a circular path. Its direction is…

Q: An astronaut in orbit outside an orbiting space station throws away a 0.3 kg stone at a speed of 8…

A:

Q: 20. The centripetal acceleration always points - in the direction of the object's motion in the…

A: Centripetal acceleration:                     It is a property of the motion of a body travelling in…

Q: If you dropped a ball while standing on the surface of Katar, at what rate would it accelerate…

A: Required : The rate of acceleration of the ball.

Q: When you whirl a can at the end of a string in a circular path, what is the direction of the force…

A: When you whirl a can at the end of a string in a circular path, the direction of the force exerted…

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A:

Q: Two spherical objects have masses of 7.5 x 105 kg and 9.2 x 107 kg.  Their centers are separated by…

A: Write the given values with the suitable variables. m1=7.5×105 kgm2=9.2×107 kgr=2.5×103 m Here, m1,…

Q: An apple falls straight down from a tree. The moon moves around the earth in orbit. What force or…

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Q: Two spherical objects have masses of 200 kg and 500 kg.  Their centers are separated by a distance…

A:

Q: Tom movest at 475 km/hr 30 degrees E of N with an additional force of 200km/hr due east. Solve for…

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Q: Two astronauts in an orbiting space station "play catch" (throw a ball back and forth to each…

A: The term "weightless" implies, there is no gravitational force acting on the object (i.e., the ball…

Q: 10. In the situation between the pook and the table, what is the direction of the gravitational…

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Q: A projectile falls beneath the straight line path it would follow if there were no gravity. How many…

A: When a ball is thrown and there is no gravity then ball will continue to follow a straight line but…

Q: What is the dominant force between astronomical objects? Why are the other three basic forces less…

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Q: the law of gravitation, 1v which relates the force of gravity (F) between two masses (M and m) with…

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Q: 80. If you whirl a tin can on the end of a string and the string suddenly breaks, the can will O fly…

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A: The gravitational force of earth is given as,

Q: Calculate the force of gravitation between the earth and the Sun, given that the nass of the earth =…

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Q: The radius of curvature is smaller at the top than on the sides so that the downward centripetal…

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Q: A man has a mass of 150 kg.  What does he weigh on earth expressed  in N?   If the gravitation…

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Q: . A stone is tied to a 3 meter long rope and rotated in a vertical circle. What is the minimum…

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Q: Two spherical objects have masses of 3.1 x 105 kg and 6.5 x 103 kg. The gravitational attraction…

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Q: roller-coaster vehicle has a mass of 485 kg when fully loaded with passengers. What is the maximum…

A:

Q: Why should the laws of nature be the same in all inertial frame of references?

A: Answer:- Because The inertial frame could be a frame of reference within which laws of motion are…

Q: If the weight of the sphere is 30 N. What weight does the rectangle have?

A:

Q: A ball is fastened to a string and is swung in a vertical circle. When the ball is at the highest…

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Q: Explain why the speed of a whirlwind iun a torando is alarmingly high.

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Q: What is the relationship between the angle of incidence and the angle of deflection?

A: Solution: to find the relationship between the angle of incidence and the angle of deflection.

Q: A cannon fires a cannonball. It lands 560m away when set at a 45.0° angle. At what speed does the…

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Q: A rodeo horse is running around a corral at a speed of 300 ft/s. Let x(t) be the distance of the…

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Q: A high-orbiting spaceship travels at 7 km/s with respect to Earth. Suppose it projects a capsule…

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Q: I know that velocity can be zero when the accleration is not.  An example is when a ball is thrown…

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Q: The horse on a carousel is 4.0 m from the central axis. If the carousel rotates at 0.15 rev/s , how…

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Q: boy on top of a hill thrown a stone with an initial velocity of 100ft/sec at an inclination of 60°…

A: Motion of projectile can be divided into x component and y component.

Q: A ball is being rotated at the end of a 4-meter long string such that it is describing a circular…

A:

Q: skater rounds a curve in the track at a constant speed.  Is the skater accelerating?

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Q: What is the centripetal acceleration of the ball?

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Q: Show by deriving a mathematical relation that the acceleration due to gravity decreases with depth.

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Q: You are swinging a 1.25 kg ball in a vertical circle at a constant speed of 3.45 m/s. The string the…

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.