A rectangular oven 1 m by 1 m by 1 m is heated from the bottom surface at 200ºC. If the top surface is 80ºC at a given time and the sides are assumed to be well insulated, determine the heat transfer through the oven.
What will be an ideal response?
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A particle (m = 50 g, q = 5.0 ?C) is released from rest when it is 50 cm from a second particle (Q = ?20 ?C). Determine the magnitude of the initial acceleration of the 50-g particle.
A. 54 m/s2 B. 90 m/s2 C. 72 m/s2 D. 65 m/s2 E. 36 m/s2
When a 4-cubic-ft block of wood floats in a fluid whose weight density is 60 pounds per cubic foot, 3/4 of the block's volume is submerged. The buoyant force on the block is __________
Fill in the blank(s) with correct word
One of the effects of Mercury's very slow spin is:
A) extreme variations in its surface temperature. B) an intensely powerful magnetic field. C) tectonic activity. D) wind patterns that are slow, but global in size. E) large variations in the size of its polar cap.
Electricity and magnetism connect to form
A. mass B. light C. ultra high-frequency sound D. energy