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A car is moving on a flat horizontal circular track of radius 120m. The speed of the car is constant, 15 m/s. The mass of the car is 1200kg. Ignore air resistance.
a) What force is keeping the car in the circle?b) Find this force (magnitude and direction).
The drawing shows a coin resting on the bottom of a beaker filled with an unknown liquid. How fast is the light traveling in the liquid
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H (b) If this electron absorbs a photon and makes a transition to the 2p orbital
a spaceship travels in a circular orbit around a planet. it applies a sudden thrust and increases its speed by a factor
A converging lens with a focal length of 12.9 cm and a diverging lens are placed 25.5 cm apart, with the converging lens on the left. What is the focal length of the diverging lens
A charge of -4.02 mC is fixed inplace. From a horizontal distance of 0.958 m, a particle of mass9.27 x 10-5kg, How far does the particle travel before its speed is zero
The small piston of a hydraulic lift has a cross-sectional area of 3.30 cm2, and its large piston has a cross-sectional area of 197 cm2. What downward force of magnitude F1 must be applied to the small piston for the lift to raise a load whose weight..
Both surfaces of a double convex lens have radii of 30.8 cm. what is the index of refraction of the lens material
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.2 MJ, What is the moment of inertia of the flywheel
A person is riding a bicycle, and its wheels have an angular velocity of +23.0 rad/s. What is the angular acceleration of each wheel
The depth of the Pacific Ocean in the Mariana Trench is 36,198 ft. What is the gauge pressure at this depth
a woman is riding a jet ski at a speed of 29 ms and notices a seawall straight ahead. the farthest she can lean the
A 3.0 kg block slides along a frictionless horizontal surface with a speed of 7.0 m/s. How far up the ramp does the block slide before coming momentarily to rest
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