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A horizontal force of 100N is used to push a 20kg box across a level floor for 10m. (a) How much work is done? (b) How much work is needed to raise the same box by 10m?
A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (assume a uniform acceleration).
An ideal refrigerator does 160 J of work to remove 570 J of heat from its cold compartment during each cycle. What is the refrigerator's coefficient of performance
A 24 g ice cube at its melting point is felled into an insulated container of liquid nitrogen. How much nitrogen evaporates if it is at its boiling point of 79 K and has a latent heat of vaporization of 200 kJ/kg? Suppose for simplicity that the spec..
At its narrowest point the femur bone in the human leg resembles a hollow cylinder that has an outer radius of roughly 1.1 cm, how much force will be required to rupture it
A sled of mass m is given a kick on a frozenpond. The kick imparts to it an initial speed of 2.00m/s. find the distance the sled moves before it stops
Why is differentiation necessary to build a formal organizational structure? Is differentiation limited to large organizations? How is the concept of span of control related to both integration and differentiation?
A co-axial cable is simply a conducting cylindrical shell which surrounds a line conductor. Suppose the outer shell has a charge line density (?) of 5.00 nC/m and a radius of 4.20 mm, while the line charge has a density of -2.00 nC/m. suppose both th..
a lens is made of glass having an index of refraction of 1.5. one side of the lens is flat and the other convex with a
plan a vector to represent each of the two teams. find the magnitude of the resultant.
Water is shooting at the speed out of three tubes placed on the ground at different angles of 60°, 45°, and 30° to the horizon. Find the ratio of the greatest heights the streams can reach
Monochromatic light (wavelength = 466 nm) is incident perpendicularly on a single slit (width = 0.52 mm). A screen is placed parallel to the slit plane, and on it the distance between the two minima on either side of the central maximum is 2.1 mm...
A typical incandescent lightbulb has a filament temperature of approximately 3191 K. At what wavelength is the intensity of the emitted light highest
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