Explain how if two cases are side by side on a shelf one an have more potential energy

Answers

Answer 1
Answer:
Potential energy = (mass) x (gravity) x (height).

Even if the two objects are at the same height, the one
with more mass has more potential energy.


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What is thermal expansion and how does it relate to heat?

Answers

Answer:

"The idea behind thermal expansion is that gases expand as the temperature increases. If you have a balloon and you heat up the contents, the balloon will get larger. Scientists use the term ideal gas law to describe this activity. Liquids expand and contract, too, but there is a lot less change than in gases."

I don't know if this is what u meant, but, hope this helps :3

a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres per hour

Answers

Answer:

126 kmh⁻¹

Explanation:

We can simply solve this by applying motion equations

where  

v - final velocity

u - initial velocity

a-acceleration

t - time

v = u + at

  = 25 + 5×2 = 35 ms⁻¹

  = (35/1000)×3600 = 126 kmh⁻¹

Explain why the gravitational acceleration of any object near earth is the same matter what was the mass of the object

Answers

It takes greater force to accelerate an object that has more mass. But the gravitational force between the Earth and an object is greater when the object hass more mass. It works out just right to make any object with any mass accelerate at the same rate.

What is one way that food is mechanically changed during the process of digestion

Answers

Hi There! :)

What is one way that food is mechanically changed during the process of digestion

Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.

A basketball has a mass of 1 kg and is traveling 15 m/s. How fast would a 5 kg bowling ball have to travel to have the same momentum?A) 3 m/s

B) 15 m/s

C) 1 m/s

D) 5 m/s

Answers

A) 3 m/s. Hope this helps.

Answer:

A 3m/s

Explanation:

Took the test (k12)

2. What characteristics does the domain Bacteria have

Answers

Answer: Streptococcus.

Explanation:

The Bacteria and Archaea domains are prokaryotes, they contain no nuclues or organelles, only a circular chromosome. They cannot form multicells organisms. Archaea can be found in extreme evironments, such as hot springs and deep sea vents.