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3 years ago

If the population runs out of food after 6 hours, what would most likely happen to the graph line between 8 and 10 hours?

Physics

2 answers:

Radda [10]3 years ago

5 0

It would decline since the population is out of food

padilas [110]3 years ago

3 0

It would decrease because there is no more food

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A 1056-hertz tuning fork is struck at the same time as a note on the piano and you hear 2 beats/second. You tighten the piano st

elena-14-01-66 [18.8K]

Answer:

The frequency of the piano string is <em>1059 Hz</em>.

Explanation:

The frequency beat (fb), 2 beats/second, is the absolute difference between the frequency of the tuning fork (1056 Hz) and the frequency of the piano string.

As the piano string gets tightened, the frequency beat becomes 3 beats/second.

Therefore,

fb = $fb = fpiano - ftuning fork\\ 3 Hz=fpiano-1056Hz\\ fpiano=1056Hz+3Hz\\ fpiano=1059Hz$

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3 years ago

Janelle stands on a balcony, two stories above Michael. She throws one ball straight up and one ball straight down, but both wit

antoniya [11.8K]

Answer:

Both balls have the same speed.

Explanation:

Janelle throws the two balls from the same height, with the same speed. Both balls will have the same potential and kinetic energy. Energy must be conserved. When the balls pass Michael, again they must have the same potential and kinetic energy.

4 0

3 years ago

Conservation of energy

ddd [48]

<u>Answer:</u>

It is the fundamental concept of physics.
It states that total amount of energy in a system remains constant in isolated system. This means energy can neither be created nor it can be destroyed but can change from one form to another.
Energy can change from kinetic to potential energy, and back without reducing the total energy.

3 0

3 years ago

How high must you lift a 25 Newton book for it to have the same increase in potential energy as a 20 Newton book that was lifted

Annette [7]

Given :

An object with weight 20 N was lifted to 0.5 meters.

To Find :

How high must you lift a 25 Newton book for it to have the same increase in potential energy as the given book.

Solution :

Since both have same potential energy :

$P.E_2 = P.E_1\\\\W_2h_2 = W_1h_1$

Putting all given values in above equation :

$25h_2 = 20\times 0.5\\\\h_2 = \dfrac{20\times 0.5}{25}\\\\h_2 = 0.4\ m$

Therefore, book with same potential energy is at a height of 0.4 m.

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3 years ago

Does the vertical or horizontal position affect an objects potential energy?

son4ous [18]

Yes. If an object would be vertical, it would most likely have potential energy due to gravity.

6 0

3 years ago