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Q1. A book with a mass of 2.0 kg is held in equilibrium on a board with a slope of 60.0 degrees by a static frictional force. What is the frictional force exerted on book?
Q2. If a person radiates about 66 W of power at room temperature, how long does it take for person to radiate away the energy acquired by consuming a 230 Calorie doughnut?
How much work did the movers do (horizontally) pushing a 150- crate 10.2 across a rough floor without acceleration, if an effective coefficient of friction was 0.50.
What is an acceleration of the car
Radioactive isotopes frequently occur together in mixtures. Assume a 400g sample contains, with a half-life of 12 days, and, with a half-life of 4.5 days. If there are firstly twice as many calcium atoms as there are barium atoms, what will be the ra..
What is the amplitude of subsequent oscillations
Elucidate the spacing between peaks
One side of the roof of a building slopes up at 34.0°. A student throws a Frisbee onto the roof. It strikes with a speed of 15.0 m/s and does not bounce, but slides straight up incline. The coefficient of kinetic friction between plastic and roof is ..
A hydrometer is used to measure the specific gravity of liquids. For a sure liquid a hydrometer reading indicates a specific gravity of 1.15. What is the liquid's density and specific weight? State the answer in SI units.
An observer, whose eyes are 1.99 m above the ground, is standing 35.0 m away from a tree. The ground is level, and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 23.0° above the horizontal. Ho..
Find the Band Structure and Band Occupancy
What angle does water surface make with the horizontal
What is magnitude of the gravitational attraction
What is the terminal speed at which the bar falls? Imagine the bar remains horizontal and in contact with the rods at all times.
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