An example of scalar quantity is speed and an example of vector quantity is velocity.
A scalar quantity is a physical quantity that only has a magnitude(just a numerical value) but doesn't have any other characteristic like direction.
A vector quantity is a physical quantity that has both magnitude and direction.
<span>B. lithosphere is divided into plates.
</span>According to the theory of plate tectonics, the lithosphere is divided into plates. <span><span>
NOT:
</span>A. asthenosphere is divided into plates.
</span><span>C. asthenosphere moves over the lithosphere.
D. asthenosphere is strong and rigid.</span><span>
</span>
The choice of path should make no difference. The work should depend only on the end points and not on the route between them. But just to make sure, could we please have a look at the accompanying figure ?
Answer:
The answer to your question is below
Explanation:
Data 1
mass 1 = 250
mass 2 = 250 kg
gravity constant = 6.67 x 10⁻¹¹ Nm²/kg²
distance = 8 m
Formula
Substitution
Result
F = 0.000000065 N
Data 2
mass 1 = 1000 kg
mass 2 = 1000 kg
distance = 5 m
Substitution
Result
F = 0.000002667 N
Explanation:
Given parameters:
Energy input = 130000J
Energy output = 53000J
Unknown:
Efficiency of the conversion = ?
Solution:
Efficiency is the percentage of work output to work input;
Mathematically;
Efficiency = Energy output/ Energy input x 100
Efficiency = 53000/130000 x 100 = 40.8%