Answer:
Explanation:
A. The earth about its axis:
The earth makes one revolution in 24 hours. to know the number of revolutions per second it makes, we need to convert hours to seconds and the revolution to rad.

B. The minute hand of the clock makes one revolution in 60 minutes
To convert this to rad per second, we have

C. The hour hand of a clock completes one revolution in 12 hours

D. an egg beater turning at 300 rpm.

The relationship between the masses of the Earth, moon and sun and their distances to each other play critical roles in affecting tides
as it is given that


now we will have

now the magnitude of this vector is given as


now to find the direction we can use




Velocity includes direction
Answer:
The time it takes light to cover 1.5 km was too short to be measured by Galileo's instruments.
Explanation:
The speed of light is
, which means the time it takes to cover a distance of 1.5 km (or 1,500m) will be


which is
of a second! This time delay could in no way be measured by Galileo considering the fact that he was using his heartbeat to measure time!