Physics, 21.02.2020 18:18 hungtistic
A lumberjack is chopping wood with an ax. How does the ax make the lumberjack's job easier? A. The ax is heavy so it can split wood more easily. B. The ax multiplies the amount of work that is applied by the lumberjack. C. The ax multiplies the amount of force that is applied to the wood. D. The ax reacts with the wood so that it can be split more easily.
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Physics, 22.06.2019 17:00
Explain what will happen if decomposers were apsent from a forest ecoysystem.
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Physics, 22.06.2019 18:00
Athin nonconducting rod with a uniform distribution of positive charge q is bent into a circle of radius r. the central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. a) what is the magnitude of the electric field due to the rod at z = 0? n/c (b) what is the magnitude of the electric field due to the rod at z = infinity? n/c (c) in terms of r, at what positive value of z is that magnitude maximum? r (d) if r = 4.00 cm and q = 9.00 µc, what is the maximum magnitude? n/c
Answers: 1
Physics, 22.06.2019 19:30
A47.2 g block of copper whose temperature is 480 k is placed in an insulating box with a 91.8 g block of lead whose temperature is 200 k. (a) what is the equilibrium temperature of the two-block system? (b) what is the change in the internal energy of the two-block system between the initial state and the equilibrium state? (c) what is the change in the entropy of the two-block system? the heat capacities of copper and lead are 386 j/kg·k and 128 j/kg·k, respectively.
Answers: 1
Physics, 23.06.2019 01:00
Two positive charges are equal. which has more electric potential energy?
Answers: 1
A lumberjack is chopping wood with an ax. How does the ax make the lumberjack's job easier? A. The a...
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