A 13-kg sled is moving at a speed of 3.0 m/s. At which of the following speed will the sled have twice as much kinetic energy?
4.2 m/s
If there are two bulbs in series, and each bulb has
resistance = 3 ohms,
then their total resistance in series is 6 ohms.
When the series pair of bulbs is connected across the terminals
of the battery, the current through the circuit is
Current = (voltage) / (resistance)
= (12 volts) / (6 ohms) = 2 amperes
Answer:
The work done by the frictional force is 600J.
Explanation:
The work 
done by the frictional force is
.
Now, 
and 
; therefore,
Hence, the work done by friction is 660J.
I beileve the answer is B
Answer:
Please provide an image to help clarify
Explanation:
thanks :)
