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VMariaS [17]
3 years ago
11

Which one of the following statements concerning the electric dipole moment is false?

Physics
1 answer:
baherus [9]3 years ago
6 0

Answer:

A.The dipole moment is a scalar quantity.

Explanation:

We know that

Dipole moment :It measure the polarity of chemical bond in a molecule .

The electric dipole moment is equal to product of any charge (positive or negative ) and the distance between the two charges.

Mathematical representation:

\mu=q\times d

Where \mu =Dipole moment

q=Charge on atom or particle

d=Distance between two charged particles

It helps to find out the molecule is polar or non- polar.

When the dipole moment is zero then the molecule is non-polar.

Dipole moment is  a vector quantity.

The direction of dipole moment from negative charge to positive.

When unit of charge is C and unit of distance is m.

Then, unit of dipole moment=C-m

Hence, option A is false.

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When an object has a net force of zero, then it is said to be in what?
Ganezh [65]

Answer: the object is said to be in a state of rest or uniform motion in a straight line

Explanation:Newton's first law of motion

3 0
3 years ago
What is the mass of a substance with a density of 9g/cm3 and a volume of 4cm3
Kazeer [188]

Answer:

p= 3 g/cm³

density formula: p= m/V; p= p, m= 9 g, V= 3

p= (9)/(3)

p= 3

p= 3 g/cm³

Explanation:

plz mark bainliest

5 0
2 years ago
You find it takes 200 J of heat to take 4 kg of an unknown substance from 200 K to 240 K. It does not change phases during this
klasskru [66]

Answer:

300 K

Explanation:

First, we have find the specific heat capacity of the unknown substance.

The heat gained by the substance is given by the formula:

H = m*c*(T2 - T1)

Where m = mass of the substance

c = specific heat capacity

T2 = final temperature

T1 = initial temperature

From the question:

H = 200J

m = 4 kg

T1 = 200K

T2 = 240 K

Therefore:

200 = 4 * c * (240 - 200)

200 = 4 * c * 40

200 = 160 * c

c = 200/160

c = 1.25 J/kgK

The heat capacity of the substance is 1.25 J/kgK.

If 300 J of heat is added, the new heat becomes 500 J.

Hence, we need to find the final temperature, T2, when heat is 500 J.

Using the same formula:

500 = 4 * 1.25 * (T2 - 200)

500 = 5 * (T2 - 200)

100 = T2 - 200

=> T2 = 100 + 200 = 300 K

The new final temperature of the unknown substance is 300K.

7 0
3 years ago
A newton-meter is a measure of work also known as the _____.
MatroZZZ [7]
1 newton-meter is 1 Joule, the unit of work and energy.
4 0
3 years ago
a baby carriage is sitting at the top of a hill that is 21 m high. the carriage with the baby has a mass of 1.5 kg. the carriage
Serga [27]
Height of baby carriage from ground = 21m

Mass of carriage with baby = 1.5 kg

The carriage has potential energy by virtue of its height.

Potential energy = mgh = 1.5×10×21 = 315 J

Hence, potential energy of the carriage is 315 Joule.
7 0
3 years ago
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