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fredd [130]
3 years ago
11

1. Driving at slower speeds than traffic flow _____________ .

Physics
2 answers:
r-ruslan [8.4K]3 years ago
7 0

<u>The correct option is (D). The strength of electric field depends on the amount of charge that produces the field as well as the distance from the charge. </u>

<u> </u>

Further Explanation:

The electric field intensity at a point is the measure of the force exerted by a charge particle on another charge particle in the particular area of its strength.

The electric field intensity at a distance d due to a static charge having charge q is directly proportional to the amount of charge and inversely proportional to the square of the distance between them.

The Electric field intensity due to a charge is given as:

E = \dfrac{1}{{4\pi {\varepsilon _0}}}\frac{q}{{{r^2}}}

Here, E is the electric field intensity, q is the amount of charge and r is the distance of the charge from the point.

The above expression of electric field shows that the electric field intensity at a point depends on the amount of charge as well as the distance of the point from the charge.

<u>Thus, the correct option is (D). The strength of electric field depends on the amount of charge that produces the field as well as the distance from the charge. </u>

<u> </u>

Learn More:

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Answer Details:

Grade: Senior school

Subject: Physics

Chapter: Electrostatics

Keywords:  Strength, electric field, charge, distance, electric field intensity, magnitude of charge, electrostatic, test charge, kq/r^2.

tiny-mole [99]3 years ago
3 0

Answer:

correct option is B. may impede other vehicles on the road that are traveling at normal and safe speeds

Explanation:

solution

we know that driving very slow and very fast than the traffic flow speed is also danger and unsafe

so it is important point that when we driving or riding on road so be cautious of those people who is around you and not being unsafe on road

and vehicles riding or driving with same speed and when suddenly they get close to that extremely slow vehicle

it is  easy occurrence for the accident on road

so that why it is very important to keep the speed right in between vehicles

so always be normal and safe speeds are not more than the posted limit and can be much less in bad conditions

so we can say correct option is B

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In a crash test, a truck with mass 2100 kg traveling at 22 m/s smashes head-on into a concrete wall without rebounding. The fron
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Answer:

a) 11 m/s

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Explanation:

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m = 2100 kg

vi = 22 ..... m/s before collision

vf = 0 ......after collision to stop

Δs = 0.62   distance traveled after collision .. crumpling of truck

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Part b

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Answer:

The amount of heat energy that must be removed from the mixture to cool it to its freezing point, of -16°C is 45,360 J

Explanation:

The given parameters for the refrigeration unit and the ice cream are;

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The amount of heat energy that must be removed from the mixture to cool it to its freezing point, ΔQ, is given as follows;

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Where;

ΔT = T₁ - T₂

∴ ΔQ = m × c × (T₁ - T₂)

Therefore, by substituting the known values, we have;

ΔQ = 0.6 × 2,100 × (20 - (-16)) = 45,360

The amount of heat energy that must be removed from the mixture to cool it to its freezing point, of -16°C = ΔQ = 45,360 J.

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