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fredd [130]
4 years ago
11

1. Driving at slower speeds than traffic flow _____________ .

Physics
2 answers:
r-ruslan [8.4K]4 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:

1. The results of Rutherford’s gold foil experiment demonstrated that thehttps://brainly.com/question/1542931

2. A capacitor with capacitance (c) = 4.50 μf is connected to a 12.0 v batteryhttps://brainly.com/question/8892837

3. A point charge of 7.45 pc is fixed at the originhttps://brainly.com/question/11098511

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]4 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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An iv curve is generated for two ohmic devices, one is a good conductor and the other is a good insulator. which one will have a
allochka39001 [22]

As per the question there are two ohmic devices.

The first ohmic device is a good conductor and the second one is a good insulator.

As per Ohm's law the current flowing through a conductor is directly proportional to the potential difference maintained across the two ends of a conductor at constant temperature and pressure. If V is the potential and I is the current flow through these Ohmic devices,then mathematically it can be written as-

                                                      V∝ I   [ at constant temperature and pressure]

                                                   ⇒V= IR

Here R is the proportionality constant called resistance of the material.

 Hence the resistance R  is calculated as -

                                                         R=\frac{V}{I}

Now a graph is plotted taking potential  V on X-axis and current I along Y- axis.

The graph will be a straight line  for conductor and will be a curve depending on the type of insulator.

The slope of this graph will give  the resistance of the material.

An insulator is a substance through which current flow is very low as its resistance is very high.Hence the slope of the V-I curve is very large.

A conductor is that substance through which current is flown easily as  the resistance of conductor is very low.Hence the slope of V-I curve is smaller,

5 0
3 years ago
Two ice-skaters are skating in circles on a frozen pond. Maria is making large circles with a radius of 12 m and skating 4.5 m/s
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Answer: Samantha has the largest centripetal acceleration of 2.4 m/s^2. Maria has only 1.69 m/s^2.

Explanation:

8 0
3 years ago
A ruler vibrates 70 times in 20 seconds.what is the frequency of its vibration
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Answer:

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Explanation:

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A 80 kg block starts from rest at the top of a 15m frictionless ramp. The block slides down the frictionless ramp onto a rough h
Nadusha1986 [10]

Answer:

W(fric) = -12000 J

Explanation:

Given that

mass ,m= 80 kg

Initial speed ,u= 0 m/s

Height ,h= 15 m

Final speed ,v= 0 m/s

We know that

Work done by all the forces = Change in the kinetic energy

W_{gravity}+W_{fric}=\dfrac{1}{2}mv^2-\dfrac{1}{2}mu^2

W_{gravity}+W_{fric}=\dfrac{1}{2}m\times 0^2-\dfrac{1}{2}m\times 0^2

W_{gravity}+W_{fric}=0

W(fric)= - m g h

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W(fric) = -12000 J

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4.00 kg glass coffee cup is 30.0°C at room temperature. It is then plunged into hot dishwater at a temperature of 90.0°C, as sho
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Answer:

Q = 200800 Joules.

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To find the quantity of heat absorbed;

Heat capacity is given by the formula;

Q = mcdt

Where;

Q represents the heat capacity or quantity of heat.

m represents the mass of an object.

c represents the specific heat capacity of water.

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dt = T2 - T1

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dt = 60°C

Substituting the values into the equation, we have;

Q = 4*837*60

Q = 200800 Joules.

Therefore, the amount of heat absorbed is 200800 Joules.

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