Question

1. Newton's Universal Law of Gravitation can be written as F = G*M1*M2/r^2 where M1 and M2 are masses of objects in kilograms (kg), r is the distance between the objects in meters (m), and F is the magnitude of the force the objects exert on each other in units of kilograms times meters per second squared (kg*m/s^2).
Determine the units of the universal gravitational constant, G. In your answer, use only units of kg, m, and s. Write any exponents as positive exponents.

2. You measure a wooden plank to be 57.6 cm +/- 0.1 cm by 3.5 cm +/- 0.1 cm.

The area of the wooden plank is:  cm^2.

The uncertainty in the area of the wooden plank is: +/-  cm^2

3.You measure the radius of the lid of a large coffee container to be 14.8 cm +/- 0.05 cm.

The circumference of the lid is:  cm

The uncertainty in the circumference of the lid is: +/-  cm

The area of the lid is:  cm^2

The uncertainty in the area of the lid is: +/-  cm^2

4.A fluid has a mass of 550 kg in a volume of 3 m³. What is its density?

Answer 1

1)Newtons law of gravitation is given by,

or

Unit of F =kgm/s²

r =m

m1 and m2 = kg

Unit of G = (kgm/s²)(m²/kg²)

=

Unit of G is m³/kgs²