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Copy ana point charge is the origin. with this point charge as the source point, what is the unit vector r in the direction of
(a) the field point at x=0, y= -1.3m;
(b) the field point at x=12.0 cm, y=12.0cm;
(C) the field point x=-1.10 m, y= 2.60 m? express result in terms of unit vector i and j. show solutiond paste your question here.
A 71.0 kg skier is pulled up a frictionless ski slope that makes an angle of 15.0 deg. Determine the magnitude of the force exerted by the rope on the skier
During a workout, the football players at Rutgers State University ran up the stadium stairs at a steady pace in 58 s. estimate the average power output on the way up
A rollercoaster car has a mass of 600 kg when fully loaded with passengers. what is the force of the track on the car at the top of the hill
The coefficient of kinetic friction between the box and the surface of the incline is 0.2. The initial speed of the box at the bottom of the incline is 2 m/s. How far does the box travel along the incline before coming to rest
A 99.5 kg horizontal circular platform rotates freely with no frictions about its center at an initial angular velocity of 1.77 rad/s. Find the angular velocity of the platform with its load
A spring with a spring constant of 500N/m is used to propel a .45kg mass up an inclined plane. find the speed of the mass as it reaches the top of the plane
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. Calculate the buoyant force exerted by the water on the sphere
How much work is done by the Moon's gravitational field as a 1060 kg meteor comes in from outer space and impacts on the Moon's surface
your roommate takes a very long shower until the water in your 40-gallon electric water heater is at an average
What is the minimum work by the force P to move the 8-kg block to the top of the incline of uk=0.4? Compare this with the work needed to lift it vertically to the same height
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
A circular saw blade accelerates from rest to an angular speed of 3620 rpm in 6.3 revolutions. Find the torque exerted on the saw blade
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