Which states the law of conservation of energy?A.
Energy cannot be created or destroyed, but it can be converted or changed into different forms.

B.
Energy can be created or destroyed, and it can be converted or changed into different forms.

C.
Energy cannot be created or destroyed, nor can it be converted or changed into different forms.

D.
Energy can be created or destroyed, but it can not be converted or changed into different forms.

Answers

Answer 1
Answer: Statement A is correct. Energy cannot be created or destroyed it can only be converted or changed into different forms. 

The other forms include kinetic, potential and internal energy. Heat, and work are also other forms of energy. 
Answer 2
Answer: b. Energy can be created or destroyed, and it can be converted or changed into different forms.

Related Questions

Kinetic energy is dependent on which of the following?
A car moving with a velocity of 20 meters/second has1.8 * 105 joules of kinetic energy. What is the mass of the car?
How does the scientific process generally begin?
Force = 65 kg x 3 m/s =What is the answer?What units do you use for your end result?
What is the speed of a 500 kg elevator that has 4000 J of energy ?

2.Which of the following gear speeds
makes motor vehicle move faster?
a) 0
b) 11
c) 2
d) 3
e) 4​

Answers

Answer:

e.4

Explanation:

e - 4
explanation - because it is

Which scientist did not directly contribute to the equations that make up the laws of planetary motion?Galileo Galilei
Isaac Newton
Johannes Kepler
Tycho Brahe

Answers

Newton. The others were well known for their theories in planetary motion.

Which technology allows doctors to evaluate whether an athlete has broken a bone?

Answers

Answer;

X-ray scanners

Explanation;

  • Diagnostic imaging techniques in the field of medicine help in determination of the causes of an injury or illness and also ensures accurate diagnosis.
  • X-rays are examples of these diagnostic imaging techniques.
  • X-ray scanners are commonly used to diagnose fractured bones or joint dislocation. X-rays are the fastest and easiest way for doctors to view and assess bone fractures, injuries and joint abnormalities.
  • X-ray used for the bones uses small amount of ionizing radiation to generate pictures of bones in the body.
The technology that is used is an X-ray.

True or False? A negative energy balance occurs when you take in more calories than you need, and a positive energy balance occurs when you take in fewer calories than you need.

Answers

False, because if you take too much calories, you are have too much. That means you are in the positive, you have too much energy.

and if you take fewer, you will have less calories, so less energy.

Final answer:

False. A negative energy balance happens when you eat fewer calories than needed and expend more energy, leading to weight loss. A positive energy balance happens when you eat more calories than needed and expend less energy, leading to weight gain.

Explanation:

False. Energy balance refers to the relationship between the energy you take in from foods and the energy you expend in daily activities. Negative energy balance occurs when the energy you expend is more than the energy you take in (fewer calories eaten than needed), leading to weight loss. Conversely, a positive energy balance happens when you consume more energy than you expend (more calories eaten than needed), resulting in weight gain.

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Does gravity have an effect on the potential difference of a battery?

Answers

Answer: The correct answer is "No".

Explanation:

Gravity: It is the force which causes object to fall on the earth. It is the force which attracts bodies towards each other.

Potential difference: It is defined as the potential acting between the two points. The work done in moving the unit positive charge from one location to the another location.

The potential difference in battery is caused by the electrodes. There are two terminals in battery: Negative terminal which is at lower potential and Positive terminal which is at higher potential. It forces the electrons to flow in the circuit which constitutes the current.

The gravity and the potential difference have no relation between them.

Therefore, gravity have no effect on the potential difference of a battery.

Final answer:

Gravity does not have a direct role in determining the potential difference in a battery. It is the chemical reaction inside the battery that generates the potential difference, which transforms into electric potential energy when the battery is connected to a load. Analogies exist between gravitational and electric potential energies, but they function independently of one another.

Explanation:

No, gravity does not have a direct effect on the potential difference of a battery. The potential difference in a battery is generated via a chemical reaction within the battery itself that separates charge. The energy stored in the battery is primarily presented in the form of chemical potential energy, which transforms into electric potential energy when the load is connected.

This mechanism is independent of gravitational forces. To illustrate this, let's consider the following analogy: the potential energy of a raised hammer is stored in Earth's gravitational field. If the gravitational field were to disappear, the hammer would have no potential energy. Similarly, in the battery, if no electric field existed between the plates, no energy would be stored between them. This analogy showcases that the electrical potential in the battery does not depend on gravity. However, it would be misleading to interpret this as a correlation between the two. The force acting in a battery is electromagnetic, not gravitational.'

On another note, a similar analogy exists between gravitational potential energy and electric potential energy. On one hand, the gravitational potential energy increases as an object is lifted higher in Earth's gravitational field. On the other hand, the electric potential energy increases as the positive charge gets farther from the negative charge in the battery. The acceleration due to gravity changes as we move away from Earth, requiring adjustments in the expressions for gravitational potential energy. However, these factors do not impact the potential difference in a battery.

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A flywheel with a moment of inertia of 1.00kg m^2 is rotating at 100 rpm. What torque is required to bring it to rest in 10.0 revolutions?

Answers

Torque is defined as the turning effect of force about the axis of rotation. In short it is a moment of force. It is represented by τ. The amount of torque required to produce an angular acceleration depends on the distribution of the mass of the object. It is calculated as follows:

torque = (moment of inertia)(angular acceleration)
torque = 1.00 ( 100 )(1/60) / 10
torque = 0.1667 N∙m