Answer:
28.5 m/s
Explanation:
There are 2 different velocities: the train velocity and yours velocity. They're in opposite directions, so one is positive and other is negative. Take the forward direction as the positive:
V = +30 -1.5
V = 28.5 m/s
Answer:
Dynamos and Generators convert mechanical rotation into electric power.
Dynamo - a device that makes direct current electric power using electromagnetism
Generator - used to describe an alternator that creates AC power using electromagnetism.
Explanation: so dynamo makes direct electric power using electromagnetism. A generator creates AC power using electromagnetism
Answer:
The Earth's axis is tilted from perpendicular to the plane of the ecliptic by 23.45°. This tilting is what gives us the four seasons of the year - spring, summer, autumn (fall) and winter. Since the axis is tilted, different parts of the globe are oriented towards the Sun at different times of the year.
Explanation:
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Answer: 2.5x10^8 kilometers
Explanation:
Given that:
Distance between the earth and the sun = 2.5x10¹¹metres
Convert distance in metres to kilometers
Recall that 1000 metres = 1 kilometers
So, 2.5x10¹¹metres = Z kilometers
To get the value of Z, cross multiply
Z km x 1000 m = (2.5x10¹¹metres x 1km)
1000Z = 2.5 x 10^11
Divide both sides by Z
1000Z/1000 = 2.5 x 10^11/1000
Z = 2.5x10^8km
Thus, the distance between the earth and the sun is about 2.5x10^8km
