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balu736 [363]
3 years ago
13

21. The force is the product of

Physics
1 answer:
KiRa [710]3 years ago
4 0

Answer:

D mass and acceleration

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A train moves from rest to a speed of 25 m/s in 30.0 seconds. What is the acceleration?
fredd [130]

Answer:

a = 0.83\ m/s^2

Explanation:

<u>Uniform Acceleration </u>

When an object changes its velocity at the same rate, the acceleration is constant.

The relation between the initial and final speeds is:

v_f=v_o+a.t

Where:

vf  = Final speed

vo = Initial speed

a   = Constant acceleration

t   = Elapsed time

It's known a train moves from rest (vo=0) to a speed of vf=25 m/s in t=30 seconds. It's required to calculate the acceleration.

Solving for a:

\displaystyle a=\frac{v_f-v_o}{t}

Substituting:

\displaystyle a=\frac{25-0}{30}

\boxed{a = 0.83\ m/s^2}

4 0
3 years ago
• How can you find the temperature in Fahrenheit when its given in the<br> Celsius scale?<br> I
Ray Of Light [21]

Answer:

there are conversion scales used for doing that

to convert Celsius to Fahrenheit we use the formula,

T(°F) = T(°C) × 9/5 + 32

and to convert Fahrenheit to Celsius we use,

T(°F) = T(°C) × 5/9 + 32

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Explanation:

4 0
3 years ago
URGENT: true or false: liquids can be poured from one container to another because there are no attraction forces between atoms
sashaice [31]

Answer:

False

Explanation:

It's common sense  

4 0
3 years ago
Read 2 more answers
9. An object of weight 80kg on earth is taken to a
ryzh [129]

Answer:

266. 4

Explanation:

acceleration due to vravity on earth is 10m/s.

One third of it is (1/3)*10

=3.333m/s.

Weight is mass × acceleration

weight= 80kg÷ 3.333m/s

W= 266.4 Newton.

4 0
3 years ago
The process by which green plants convert light energy from the sun into chemical energy and food for use is known as - blank-
Basile [38]

Answer:

Photosynthesis

Explanation:

This process occurs in presence of sunlight, water, minerals, chlorophyll in autotrophs

3 0
3 years ago
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