Answer: 4.76 watts
Explanation:
Work = 1000 J
Time = 3.5 minutes (210 seconds)
Since the SI unit of time is seconds, 210 seconds will be used in calculation.
Power output of the machine = ?
Recall that power is the rate of doing work. Thus, power is Workdone divided by time taken.
i.e Power = (work/time)
Power = 1000J/210seconds
Power = 4.76 watts
Thus, the power output of the machine is 4.76 watts
Answer:
F = m X a
Therefore ,
Force required = 50 X 30 = 1500 newton
Answer: Varying amounts of the Moon's lit surface being visible from Earth.
Explanation:
Phases of the moon can be defined as the different shapes of the moon visible from the Earth. This happens because sun lits up the face of moon and due to different position of moon in the orbit around earth, varying portion of the lit surface of the moon is visible from Earth. Refer to the diagram below:
1 nanometer =
1 × 10-7 centimeter