1. During a total solar eclipse the moon almost entirely covers thesphere of the sun. Write the relation between the distances andsizes of the sun and moon.2. If the unit of force is 100 N, unit of length is 10 m and unit of time

is 100 s, what is the unit of mass in this system of units?

1.
The ratio of distances of the sun and moon from the earth:

Distancesun Distacemoon= 149000000384,400 = 387.61DiametersunDiametermoon = 1,392,0003,476 = 400.46The ratios are nearly equal that is the reason why moon appears to completlyblock the sun during a total soalr eclipse.

2.

as we know thatN = kg ×m s2now substituting the values of units given and taking that of mass to be 'm' in the new system of units:100 = m × 101002 m= 100000 kg

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