Ok here's a rough image of how a typical energy diagram works. You give a little energy (A) and you get the potential that was in there all along. Kinda like pushing a big rock off a cliff. You do a little work then get a lot of energy out as the PE turns into other forms. In a match it's heat and light
Answer:
The amount of work must be do to rotate the bar magnet is 151.2 J
Explanation:
Given:
Magnetic moment
Magnetic field T
To find work do to rotate the bar magnet,
From the formula of work done in case of magnetic field,
Here changes 0 to 180
But
J
Therefore, the amount of work must be do to rotate the bar magnet is 151.2 J
The person will feel cold.
Exothermic processes involve the loss of heat from the system, whereas endothermic processes bring heat into the system. Since heat is being lost from the system and heating up the test tube, reaction A is exothermic. The primary distinction between exothermic and endothermic reactions is that the former releases energy into the environment while the latter collects energy in the form of heat from its surroundings. Heat and light are significant indicators that a reaction has occurred when two chemicals are together. The reaction is exothermic if heat is released. Exothermic refers to a reaction in which molecules have transitioned from a higher to a lower energy state.
Learn more about endothermic reaction here :-
brainly.com/question/23184814
#SPJ4
Given,
Mass of the ball (m) = 1.50 x 10³ kg = 1500 kg
Height raised = Displacement of the ball (D) = 40.0 m
Time taken (t) = 20 seconds
Power = Work done(W) ÷ time taken (t)
Work done (W) = Force (F) x Displacement (D)
Force (F) = Mass (m) x Acceleration due to gravity (g)
Acceleration due to gravity for earth (g) = 9.81 m/s²
Therefore,
Force (F) = 1500 x 9.8 = 14715 N
Work done = Force x Displacement = 14715 x 40 = 588600 Joules
Now,
Power = Work done ÷ time taken = 588600 ÷ 20 = 29430 Watts
Answer:
principle of contiguity
Explanation:
The Law of Contiguity states that after events occur together (in spatio-temporal proximity), the re-occurrence of just one of the event awakens the 'memory' of the others. It is employed in a great number of scientific theories of learning, memory, and knowledge.