Current in a metal wire is inversely proportional to the potential difference applied to its two ends
Indicate whether the statement is true or false
FALSE
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A hockey puck slides off the edge of a horizontal platform with an initial velocity of 28.0 m/s horizontally in a city where the acceleration due to gravity is 9.81 m/s2. The puck experiences no significant air resistance as it falls
The height of the platform above the ground is 2.00 m. What is the angle below the horizontal of the velocity of the puck just before it hits the ground? A) 77.2° B) 72.6° C) 12.8° D) 12.6° E) 31.8°
In the process of evaporation
1) heavier atoms are most prone to leave the liquid, 2) there is a net gain in the number of atoms in the liquid, 3) energy is absorbed by the liquid, 4) all of these, 5) none of these, and the average rate of molecular motion for the atoms remaining in the liquid 6) increases. 7) decreases. 8) remains unchanged.
Fusing two iron nuclei would occur with
A) absorption of energy. B) release of energy. C) neither of these
When a load is placed on the middle of a horizontal beam supported at each end, the top part of the beam undergoes
A) tension. B) compression. C) either of these D) none of these