All categories

3 years ago

Science 7 Grade 7. Can anyone please help me answer these science questions?

Chemistry

2 answers:

masha68 [24]3 years ago

6 0

A cellphone battery is a electrical energy
and a piston in an engine is an thermal energy

NARA [144]3 years ago

4 0

Thermal expansion in a balloon occurs because when the balloon is heated up, the gas molecules will move faster and in greater distance so when if they move faster then they will hit the wall with greater force, will result to expansion.

conduction, convection and radiation are the ways that thermal energy is transferred.

a cellphone battery is an electrical energy, then piston in an engine is mechanical energy

You might be interested in

Convert 1176 mmHg to kPa

OLEGan [10]

Answer:

156.8kPa

Explanation:

The problem here is to convert mmHg to kPa;

We have been given:

1176mmHg and the problem is to convert to kPa;

1000Pa = 1kPa

1 mmHg = 133.322Pa

1176mmHg will give 1176 x 133.322 = 156787.1Pa

To kPa;

156.8kPa

8 0

2 years ago

What is more electronegative? O or Br

cluponka [151]

Answer:

Explanation:

O = 3.44

Br = 2.96

8 0

2 years ago

Which surface ocean currents has the warmest water

NNADVOKAT [17]

the Brazil Current has the warmest water

4 0

3 years ago

Read 2 more answers

Given the balanced equation:

Svet_ta [14]

Is there any answer choices before i get started on working out the problem

8 0

2 years ago

What type of lens is shown -covex lens -this isnt a lens concave lens

sleet_krkn [62]

$\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the Lens and Ray Optics.

We must understand the Concept that,

1.) When a beam of parallel light pass through a Convex lens, all the rays get deviated and converges to a special point at the axis that is a Focus.

2.) When a beam of light passes through the Concave lens,the light beams diverge from one another forming a virtual focus in the primary side of lens,

Hence the above given diagram beam rays are diverging, it is a CONCAVE LENS

answer is C.) Concave lens

6 0

2 years ago