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A 143 O lamp, a 29 O electric heater, and a O 53 fan are connected in parallel across a 135 V line.
a) What total current is supplied to the circuit? Answer in units of A
b) what is the voltage across the circut? answer in V?
c) What is the current in the lamp? Answer in units of A
d) What power is expended in the heater? Answer in units of W
Consider a theoretical head-on collision between two carts of equal mass and equal speed. What is the total momentum after the collision
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