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iVinArrow [24]
3 years ago
10

Jack travels 80 km in 50 minutes. What is his speed in m/s?

Physics
1 answer:
Pie3 years ago
7 0

Answer:

1.6 m/s?

Explanation:

80 ÷ 50 = 1.6 m/s

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A uniform pole AB of weight 5w and length 8a is suspended horizontally by tho strings attached to it at C and D where AC=DB=a. A
luda_lava [24]
Moment about D=0 or,T1*6a-5w*3a-9w*2a=0 T2+T1=5w+9w

4 0
3 years ago
Choices are 10.7<br> 16.9<br> 15.2<br> 17.5
madreJ [45]

Answer:

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Explanation:

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6 0
2 years ago
The voltage across a membrane forming a cell wall is 72.7 mV and the membrane is 9.22 nm thick. What is the magnitude of the ele
Blizzard [7]

Answer:

The  magnitude of the  electric field intensity is  E =  7.89  *10^{6} \ V/m

Explanation:

From the question we are told that

    The  voltage is  \epsilon     =  72.7 \ mV  =  72.7 *10^{-3}  V

    The  thickness of the membrane is  t =  9.22 \ nm  =  9.22 *10^{-9} \ m

     

Generally the electric field intensity is mathematically represented as

                E =  \frac{\epsilon }{t}

 substituting values

                E =  \frac{72.7 *10^{-3} }{9.22 *10^{-9}}

                E =  7.89  *10^{6} \ V/m

8 0
3 years ago
Why is the sun considerad as the main source of energy?​
KATRIN_1 [288]

Answer:

The sun is considered as the main source of energy since it is the source of nearly all the earth's energy. Plants produce food using sunlight, and the food we get from plants and animals also has its primary sunlight source.

Hoped it helps you.

3 0
3 years ago
Read 2 more answers
What are the standard units of length, mass, and volume in the<br> metric system?
antoniya [11.8K]

Answer:

Meter, Gram and Liter.

Explanation:

In the metric system, the standard units for the below are;

Length  - Meter

Mass     - Gram

Volume - Liter.

8 0
3 years ago
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