What kind of system is generally composed of a fluid system to move the heat from the collector to its point of usage and a reservoir to stock the heat for future use?A.
coal burning
B.
nuclear power
C.
solar heating
Answers
Solar heating is the system composed of a fluid system to move the heat from the collector to its point of usage and a reservoir to stock the heat
Explanation:
The options given here like coal burning uses solid material as the source to heat and to generate energy. Similarly, nuclear power also requires solid particles like atoms or neutrons to strike the moderators forming energy.
In both of these cases, fluid system is present but it is used completely as coolant and to maintain the temperature. Thus, the remaining system that is solar heating has been done for water tanks where the fluid as water is used to move the heat from its collector to its point of usage. Even in solar system it is used as reservoir to stock the heat.
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I hope I helped :D
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MATCH THESE ^-^ Match Newton's law with the correct statement.
2. 1st law of motion (law of inertia)
3. 2nd law of motion
4. 3rd law of motion
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A. "My coffee spilled all over because you slammed on your brakes!"
B."The box of cotton is much easier to lift than the box of books."
C. "That bat hurt my hands when I hit the ball!"
D. "I can't hit the ball farther than you because you're stronger than I am."
Answers
Answer:
1. law of universal gravitation -"The box of cotton is much easier to lift than the box of books."
2. 1st law of motion (law of inertia) - "My coffee spilled all over because you slammed on your brakes!"
3. 2nd law of motion - "I can't hit the ball farther than you because you're stronger than I am."
4. 3rd law of motion - "That bat hurt my hands when I hit the ball!"
Explanation:
Law of gravitation states that there exists an attractive force between two objects having mass. The magnitude of the force depends upon the masses of the two objects and inversely proportional to the distance between them. Thus, greater the mass, greater would be the force. weight of an object is determines the gravitation pull of the Earth on the mass of the object. Thus, it is easier to lift a box of cotton which is lighter in weight than a box of books.
Newton's first law states that an object remains in state of rest or motion unless exerted by an unbalanced external force. Thus, when you are sitting in the car and the driver applies break suddenly, you experience a pull force because you continue to move forward while the car suddenly decelerates and if you would be holding coffee, it can spill.
Second law of motion states that force is rate of change of momentum. Momentum depends on the mass and velocity of the object. Greater the mass, greater would be momentum. Thus, A person who is stronger would be able to hit the ball harder and hence faster than the other.
Third law of motion states that, for every action, there is equal and opposite reaction. Thus, when when you a ball with the bat, you are applying force with your hands. Hence, your hands would also experience an equal amount of force in the opposite direction and you would get hurt.
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The force of gravity between two objects always involves the product of
both of their masses.
"Weight" is the force of gravity between a planet and an object on its surface,
so it depends on both masses.
When a rock, a space probe, or an astronaut goes to a different planet, its/his
mass doesn't change, but the mass of the body they're standing on is different.
So the weight of the rock or the astronaut is different from what it is on Earth.
So, this formula clearly depicts that Weight of any object depends on mass of that object as well as on the gravitational acceleration. So, the lesser gravitational acceleration on Moon makes an object weigh lighter on Moon than on Earth. Similarly it is true for different planets also.
And what is the dependent variable for this experiment
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Answer:
Independent variable - temperature
Dependent variable - tablet dissolving affect.
Explanation:
The Independent variable in an experiment is characterized as the variable in the experiment that is not affected by a change in any other variable or factor. It could be changed or manipulated to observe its impact on the dependent variable. While a dependent variable is the one that is affected by any change in the independent variable.
In the given experiment, the 'temperature' is the independent variable as it can be controlled or manipulated to observe the effect in the dependent variable. The 'tablet dissolving effect' would be the dependent variable as it is directly affected by any change in the independent variable(the higher the temperature, the easier the tablet gets dissolved).