The smallest marble has the most kinetic energy therefore it would be the correct answer
Answer:
The current that flows through the lamp is 0.5 A.
Explanation:
A lamp functions like a resistor and the real power absorbed by a resistor is given by the product of the voltage drop across it's terminals and the current that flows through it. If we wish to find the current that this lamp draws we should divide the wattage given (60 W) by the voltage drop provided (120 V). We then have:
i = P/V = 60/120 = 0.5 A.
Answer:
T = 686.7N
Explanation:
For this exercise we will use Newton's second law in this case there is no acceleration,
∑ F = ma
T -W = 0
The gymnast's weight is
W = mg
We clear and calculate the tension
T = mg
T = 70 9.81
T = 686.7N
Answer:
B
Explanation:
Friction acts in a direction opposite to the motion of an object
