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Calculate the buoyancy force exerted by a liquid of density 933 kg/m^3 on a cube of a metal with density 1643 kg/m^3 and volume 18 cm^3. (gravity is 9.8m/s^2) (Give the result in Newton)
the nucleus of a helium atom contains two protons that are approximately 2.0 fm apart. how much work must be done by an
Two banked curves have the same radius. Curve A is banked at an angle of 11°, and curve B is banked at an angle of 19°. At what speed can this car travel around curve B without relying on friction
The 0.0030 Joule of energy are stored in a parallel-plate capacitor whose plates each have area 0.30 m2 and are 1.5 millimeter apart. Find the electric field energy density between the plates
A large heavy disk is mounted to a table by a firm clamp. A string is wound about an axle on the wheel from which a 100g mass is suspended. The radius of the axle is 0.01m and the large wheel has a mass of 2kg. The noted acceleration is 0.25m/sec2. W..
When monochromatic light shines vertically on a soap film(n = 1.33) with air on each side, the second smallest nonzero film thickness for which destructive interference of reflected light is observed is 326 nm. What is the vacuum wavelength of the li..
a 16-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 33 n. starting from rest
From that position, we then slowly move the block so that our force does + 4.0 J of work on the spring-block system; the block is then again stationary. What is the block's position?
A 5 g sample of solid carbon dioxide evaporates into a 0.1 L vessel at room temperature (298K). Compute the work done when the system is then allowed to expand (a) isothermally against a constant pressure of 1 atm and (b) isothermally and reversibly ..
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A stone is dropped into the water from a bridge 144ft above thewater. another astone is thrown vertically down 1s after thefirst is dropped. what was the initial speed of the second stone
The 1.0 kg physics book is conected by a string to a 500g coffee cup. The book is given a push up the slope and released with a speed of 3.0 m/s. How far does the book slide
A plastic bag is filled with nitrogen at atmospheric pressure and 27.0 oC. How large a volume of nitrogen (in m3) is required
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