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A man pushes a 16.0 kilogram shopping cart at a constant velocity for a distance of 24.0 meter. She pushes in a direction 25.0 degree below the horizontal. A 52.0 N frictional force opposes the motion of the cart.
(a) Find the magnitude of the force that the shopper exerts?
N
(b) Find the work done by the pushing force.
J
(c) Evaluate the work done by the frictional force.
(d) Find the work done by the gravitational force.
An electron is accelerated from rest by the potential difference of 461 V. It then enters a uniform magnetic field of magnitude 184 mT with its velocity perpendicular to the field. Calculate (a) speed of the electron and (b) radius of its path in ..
a catapult launches a rock towards a hill 500m away. the rock lands on the hill 20m above the release point of the rock. find the max height of the rock during flight
Unpolarized light with an intensity of 760 W / m2 is incident on a polarizer with an unknown axis. compute the angle between the axes of the polarizers
A dumbbell is made of two spheres, which each have a mass M and a radius r - and a massless stick af length L. What is the torque acting on the dumbbell
A laser beam is incident at an angle of 33.0 degree to the vertical on to a solution of corn syrup in water. evaluate its frequency in the solution
if there were two kinds of electrons, you could put 4, not just 2, in a given state. what would be the atomic number of the third largest inert gas in such a world
A person is riding a bicycle, and its wheels have an angular velocity of 12.1 rad/s. What is the anguar acceleration (in rad/s2) of each wheel
It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.175 s, elucidate what is the average force exerted on the ball by the wall?
A parallel plate without a dielectric is connected to a battery and has capacitance of 3.2 x 10-10 Farads and a charge of 8.8 micro-Coulombs on its plates. The distance between the plates of the capacitor is 2.6 cm.
question1a 35 kg uniform ladder is leaned against a building. the 5 meter tall ladder makes an angle of 60 degrees with
The electric potential difference between two infinite, parallelmetal plates is V. If the plates are separated by adistance L = 4.7 mm and the electric field between the plates is E = 265 V/m, what is V?
Each railroad car has a mass of 91000 kg. Seven coupled railroad car moving with a speed of 4.9 m/s collide, What is the speed of all ten cars after the collision
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