Answer:
<em>If you’ve ever received a high energy bill, it might be time to learn how to read your meter, so that you can begin saving.
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Explanation:
<em>Every appliance and electronic device in your home adds to your bill. By calculating your own tab, you can find out which appliances are costing you much more than they should. This awareness can both lower your bill and reduce your carbon footprint at the same time.
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Answer:
The average speed of the cars is 50mph
Explanation:
Option C
The strength of the gravitational force between two objects depends on the distance between their centers.
At higher altitude, the center of the Earth is farther from the center of YOU, so the strength of the gravitational force between those two objects is less.
Answer:
By the use of the reaction force one body is able to accelerate because it is not fixed to a rigid support which offers a materialistic resistance.
Explanation:
For every force there is an equal and opposite reaction is stated in the Newton's third law of motion holds true universally.
This law accounts for the acceleration of the bodies with respect to the object that applies force on the other body. The acceleration is possible when iether one of the body is fixed and cannot move or when that both the bodies are not fixed can move.
- For example consider a rocket with its engine started. This rocket generates upthrust by conversion of chemical energy of the fuel into the mechanical energy applying force on the launchpad. When this force is large enough it to lift the rocket then the rocket starts moving in the air and it accelerates. Now, when it is in the air or in vacuum during the course of its journey it uses the reaction of the burnt gases of the fuel to change the momentum.
This is in accordance with the Newton's second law of motion, stating that the Force is directly proportional to the rate of change in momentum.
