Electrical energy into heat energy
Answer:
<em>The work done is 100,000 Joule</em>
Explanation:
<u>Work and Power
</u>
Work is the amount of energy transferred by a force.
If both the force F and displacement s are parallel, then we can use the formula:
W = F.s
Power is the amount of energy transferred or converted per unit of time. In the SI, the unit of power is the watt, equal to one joule per second.
The power can be calculated as:
Where W is the work and t is the time.
We know the power needed to move a spoon is P=10,000 Watt and it took a time of t=10 s. The work done on the spoon is calculated by solving for W:
W = Pt
W = 10,000 Watt * 10 sec
W = 100,000 Joule
The work done is 100,000 Joule
Answer:
Explanation:
There are two forces acting on the oil drop:
- The force of gravity, downward, given by
where m is the mass of the drop and g is the acceleration due to gravity
- The electric force, upward, given by
where q is the charge of the oil drop and E is the magnitude of the electric field
The oil drop remains stationary, so the two forces are balanced:
where
Substituting into the previous equation and solving for q, we find the charge of the oil drop:
Hello!
Answer:
Regular physical activity in life improves strength and endurance, helps build healthy bones and muscles, helps control weight, reduces anxiety and stress, increases self-esteem, and it can improve blood pressure and cholesterol levels.
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<u>Hope this help<3</u>
Yes. Your weight is pulling you to center of the world. Weight is a force (gravity).
And since you're still on where you sit, the thing you're sitting on, exerts an equal force to your weight. That's stated in Isaac Newton's third law of motion. Simply 'For every action, there is an equal and opposite reaction.'