To calculate power, divide the amount of energy transferred by...?
Answers
Power, as you should have learned in your class, is a rate; it needs to be multiplied by time to get the amount of energy
Thus, your answer...time.
To calculate power, divide the amount of energy transferred by time.
Final answer:
Power in physics is the rate of energy transferred per unit time. It can be calculated by dividing the amount of energy transferred by the time required for the transfer.
Explanation:
In Physics, power is defined as the rate of transferring energy or the amount of energy per unit time. If you want to calculate the power, you take the amount of energy transferred and divide it by the time it takes for that transfer to occur. For example, if a light bulb transfers 100 joules of energy over 10 seconds, the power would be 100 joules divided by 10 seconds, which equals to 10 watts.
Learn more about Power here:
#SPJ2
Related Questions
Definition of transalatory motion
The curved movement of air or water is the result of which of these?Select one: a. winds spinning off the equator b. the rotation of Earth on its axis c. the different air movements north and south of the equator d. the friction that slows down winds near Earth’s surface
Which force changes Earth's surface most slowly?A) earthquakeB) erosionC) volcanoD) landslide
what are the various ways in which lithospheric plates interact with each other as they move around on a dynamic earth??
Answers
Answer:
an insulator
Explanation:
Examples: Plastic, rubber, etc.
A conductor would be the opposite of an insulator like metal.
Answers
Answer:
1=ser
2=both
3=par
4= both
Explanation:
B) because balanced forces can not exist in nature
C) because motion is the inherent state of all matter
D) because motion, once begun, continues to accelerate
Answers
Answer: A) because forces are what stop and start motion
Explanation:
From Newton's first law, an object tends to stay in state of rest or motion unless acted upon by an unbalanced external force. This is also known law of inertia. This is because a force can stop or start a motion. A force cause body to accelerate to decelerate otherwise the body continues with constant speed.
An object in motion stays in motion unless acted on by an unbalanced force A) because forces are what stop and start motion
Further explanation
In Newton's first law, it is stated that if the resultant force acts on an object of magnitude is zero, it can be formulated:
then the object tends to defend itself from its state.
or can be stated:
An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
So for objects in a state of movement, objects tend to move forever. Likewise, for objects in a state of rest, they tend to remain forever. The tendency of objects like this is called inertia
The size of inertia is proportional to mass, the greater the mass of the object, the greater the inertia of the object.
In objects with mass that move translatively, the object will maintain its linear velocity
Forces are balanced when all the forces act upon an object balance with each other
Forces are unbalanced when there is an individual force that is not being balanced by another force
So the object in balanced forces:
- 1. object at rest v = 0, a = 0
- 2. object at motion v ≠0, a = 0
Let see the answer choices
- A) because forces are what stop and start motion
If there is an unbalanced force, the object will tend to move from the rest position or the object changes its state of motion.
Statement is true
- B) because balanced forces can not exist in nature
Balanced forces can exist in nature for example. For example a person standing on the floor. There are two forces. The force of gravity and the floor for upward force, thus the person maintains its state (rest motion). So this condition is called a state of balance or balance.
Statement is false
- C) because motion is the inherent state of all matter
All matter is not only in a state of movement but also in a position of rest
Statement is false
- D) because motion, once begun, continues to accelerate
motion of object can accelerate or decelerate
Statement is false
Learn more
Newton's law of inertia
example of Newton's First Law of inertia
law of motion
Keywords: inertia, Newton's First Law
Answers
A) Joe is right because the electricity is changed to heat and light and is no longer electricity.
B)Ben is right because the Law of Conservation of Energy is a law and cannot be false.
C) Ben is right because the electricity from the light is transformed into heat and light.
D) Joe is right because all electrical lights and appliances use electricity.
2) Greg and Shawn are studying for a physical science test. Greg thinks that the kinetic energy of an object depends on the height and speed of an object, but Shawn thinks it depends on the mass of an object. Who is right and why?
A) Shawn is right. The mass of an object determines the inertia of the object. Increasing inertia is the only thing that will increase kinetic energy..
B) Both Greg and Shawn are correct since kinetic energy depends on mass, height and speed of an object.
C) Greg is right. Increasing the height or speed of an object increases the kinetic energy of an object.
D) Neither is completely right. Shawn is partly correct since kinetic energy depends on mass, but Greg is also partly right since it also depends on speed.
3) Dan got into his car in the middle of summer. When he sat on the hot black leather seats, he burned his legs. His sister said that conduction was the reason Dan burned his legs, but Dan blamed the sunshine and said it was radiation that caused him to get burned. Who was right and why?
A) Both Dan and his sister are right. The sun heated the car seats through radiation heat transfer, but then Dan touched the seat and the heat was conducted to his legs.
B) Dan's sister was correct because Dan's legs touched the car seats. That is an indicator of heat transfer by conduction.
C) Dan was right because the sun heated the car without touching it. That is radiation.
D) Dan's sister was right because conduction can transfer heat through both solids and fluids (such as air).
Answers
1) C) Ben is right because the electricity from the light is transformed into heat and light.
Explanation:
The Law of Conservation of Energy states that energy cannot be created nor destroyed, but only transformed.
In this particular example, energy is not destroyed. In fact, the electrical energy (produced, for instance, by the battery inside the torchlight) is converted into light (electromagnetic wave) and heat (thermal energy). So, Ben is right, because energy is just transformed into other types of energy.
2) D) Neither is completely right. Shawn is partly correct since kinetic energy depends on mass, but Greg is also partly right since it also depends on speed.
Explanation:
The kinetic energy of an object is given by:
where m is the mass of the object and v its speed. From the formula, we see that neither Shawn nor Greg is completely right, because the kinetic energy depends both on the mass and the speed, and:
- Greg only told about the speed
- Shawn only told about the mass
3) B) Dan's sister was correct because Dan's legs touched the car seats. That is an indicator of heat transfer by conduction.
Explanation:
Conduction is the method of heat transfer that occurs between two solid objects, when they are in contact with each other, and it is due to the collisions between the molecules of the two objects: when colliding, the molecules of the hotter object transfer part of their kinetic energy to the molecules of the colder object.
In this case, Dan legs are in contact with the car seat (which is at higher temperature), so heat is transferred from the seat to Dan legs by conduction.
3 is B my dude and the reason nobody answered is because thousands of questions are asked every day. So not every question can be answered. It doesn't have to do with being lazy.
Answers
But the one compound that's most abundant, and actually comprises almost
80% of my entire beautiful body, is the compound DiHydrogen Oxide, with
the molecular formula H₂O . This compound is commonly known as "water".