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tino4ka555 [31]
3 years ago
8

Question 18 of 25

Physics
1 answer:
Likurg_2 [28]3 years ago
7 0
C I just done it so yeah
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A bus starts to move from rest. if its velocity becomes 90 km per hour after 8s second. calculate acceleraton​
topjm [15]

90 km per hour = 25 metres per second

a=\frac{v-u}{t}

a=\frac{25-0}{8}

a=3,13m/s^2

7 0
3 years ago
True or False: The cycle of seasons on the Earth is caused by the tilt of the Earth on its axis toward and away from the Sun.
damaskus [11]

the correct answer is that it is True

8 0
3 years ago
Collaborative learning activities:__________.
blagie [28]

Answer:

Options A, B as well as C are the correct choices.

Explanation:

  • Collaborative learning seems to be a circumstance where learning is an educational approach as well as make an effort to understand all this together.
  • Except for personal learning, people participating in this learning draw mostly on competencies and qualifications of each other.

This form of learning isn't always linked to the perhaps one given choice. And the response to the above will still be the appropriate one.

3 0
3 years ago
A straightforward method of finding the density of an object is to measure its mass and then measure its volume by submerging it
Thepotemich [5.8K]

Answer:

<em>The density of rock = 3.37 g/cm³</em>

Explanation:

Density: Density can be defined as the ratio of the mass of a body to the volume. The S.I unit of density is kg/m³. It can be expressed mathematically as ,

D = M/V............................................... Equation 1

Where D = density of the body, M = mass of the body, V = volume of the body.

From Archimedes' principle, a body will displace a volume of water equal to  its volume.

Therefore, Volume of the object = volume of water displaced

<em>Given: M = 300 g, V = volume of water displace = 89.0 cm³.</em>

<em>Substituting these values into equation 1</em>

<em>D = 300/89</em>

<em>D = 3.37 g/cm³</em>

<em>The density of rock = 3.37 g/cm³</em>

4 0
4 years ago
What happens when exhale
polet [3.4K]
When you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. This increases the space in your chest cavity, into which your lungs expand. The intercostal muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
4 0
4 years ago
Read 2 more answers
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