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A horse canters away from its trainer in a straight line, moving 119m away in 15.3s. It then turns suddenly and gallops halfway back in 5.0s.
a. Compute its average speed for the entire trip.
b. Compute its average velocity for the entire trip, using "away from the trainer" as the positive direction.
a spacecraft is in orbit around a planet. the radius of the orbit is 3.1 times the radius of the planet which is r
A Kennedy half-dollar has a mass that is 1.150 x 10-2 kg. The coin is a mixture of silver and copper, andin water weighs 0.1011 N. Determine the mass of silver in the coin
a square loop of wire surrounds a solenoid. the side of the square is 0.1 m while the radius of the solenoid is 0.025
A particle with a charge of -8.5μC is traveling East with a speed of 45m/s in a region with a magnetic field of 0.30T. If the direction of the magnetic field is South, What is the direction of the magnetic force?
A heat engine produces 9440 J. of heat while performing 2340 J. of useful work. What is the percent efficiency of this engine
How much work is needed to push a 132- kg packing crate a distance of 2.35 m up an inclined plane that makes an angle of 26 o with the horizontal, when inclined plane is frictionless
a 1.50 m section of it at one end is bent 90° in the negative z direction. Illustrate what is the total magnetic flux through the surface? Choose directions for the area vectors so that the flux through each surface is positive.
A satellite is placed in orbit 7.2 x 105 mabove the surface of Jupiter. Jupiter has a mass of 1.90 1027 kgand a radius of 7.14 x 107 m. Find the orbital speed of the satellite
A 270 g ball at the end of a string is revolving uniformly in a horizontal circle of radius 0.51 m. The ball makes1.7 revolutions in one second. What is the speed of the ball as itgoes around in the circle?
a piano has been pushed to the top of the ramp at the back of a moving van. the workers think it is safe but as they
Light precedes through three polarizing sheets. Unpolarized light enters the 1st sheet and the resultant vertically polarized beam continues through the 2nd and 3rd. What percent of the original intensity emerges from filter #1
Two towboats are pulling a plane in the Hudson River. Towboat 1 pulls with a force V1 = 610.0N, at an angle of ?1= 41.0o. What is the direction of the net force
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