PHYSICS HIGH SCHOOL

The kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf. t/f

Answers

Answer 1
Answer:

Answer: The given statement is false.

Explanation:

Kinetic energy is defined as the energy obtained by an object because of its motion.

For example, moving a pulley on the road.

Whereas energy of an object obtained due to its position is known as potential energy.

For example, lifting a book from table to the shelf shows position of the book has changed.

Therefore, we can conclude that the statement kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf, is false.
Answer 2
Answer: The kinetic energy of a book on a shelf is equal to the work done to lift the book to the shelf is false. The kinetic energy on the shelf is zero because it is not in action.

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Why is ambulance written laterally inverted on the front of an ambulance van

Answers

Answer: So if you are looking in your mirror in the car, you will clearly see what the vehicle is.

Explanation: When there are flashing lights and noises coming from behind you in a car, your first response is going to be checking your mirrors. When you look at the inverted "ambulance" you will see it correctly.

Using your own words, tell mewhat is the difference between an Pure Substance and a Mixture? Make sure to give me an example of each.

Answers

Answer:

Hey there!

Mixtures are physically combined and can be separated. For example, sand and water is a mixture.

Pure substances are samples of matter with definite, and unchangeable chemical properties. For example, diamond is a pure substance.

Let me know if this helps :)

a pure substance is a substance that has not been mixed with anything, a mixture has been mixed with another substance. an example is

dirt +water=mud iron is an example of a substance

Ions can have a positive or negative charge. Please select the best answer from the choices provided T F

Answers


From among the choices provided, the more appropriate
answer is ' T ', the initial letter often used to represent
words that include 'true', 'truth', 'trust', etc., (as well as
'tree', 'train', 'transmit', 'Transylvania', 'trachea', 'travesty',
and 'trick', which are irrelevant to the present discussion).

This response is the most fitting and appropriate, because
the statement that precedes the list of allowable choices is
exemplary in its accuracy and veracity.  An ion can, in fact,
have a positive or negative charge, although the same ion
cannot have both.

How many grams is 5kg of tap water?

Answers

When you write "5 kg", the little 'k' in the middle stands for 1,000.
So '5 kg' means '5,000 g'.

It doesn't matter what substance you're working with.  It could be
tap-water, gold, air, or mud.  5 kg of it is still 5,000 grams of it.

URGENT PLEASE BRAINLIESTAssuming the starting height is 0.0 m, calculate the potential energy of the cart after it has been elevated to a height of 1.0 m above the starting location

Answers

When the cart arrives at any place that's 1.0 meter higher than where it started, its potential energy will be

(9.8) · (its mass on kilograms)  Joules .  

Final answer:

Potential Energy is given by the formula mass x gravity x height. The starting height is irrelevant in its calculation. The potential energy depends on the mass of the object, gravity and the elevated height.

Explanation:

The potential energy of an object is calculated by the formula Potential Energy = mass x gravity x height. Whenever the height of an object increases, its potential energy will increase as well provided mass and the  gravitational field (g) remain constant. Here, the starting height being 0.0 m is irrelevant to the calculation of potential energy at 1.0 m height. If the mass of the cart and the value of gravity (usually taken as 9.8 m/s2 on Earth's surface) are known, you can substitute those values into the formula to find the potential energy.

e.g. If the mass of the cart was 2 kg, the potential energy at a height of 1.0 m would be 2 kg x 9.8 m/s

2

x 1.0 m = 19.6 joules.

Learn more about Potential Energy here:

brainly.com/question/24284560

#SPJ3

I need help i'm confused

Answers

Net force is the two added since they are in the same direction. Net force equals 5N<--
Direction is to the left
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