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svp [43]
3 years ago
11

What is the dimensional formulae of "Mass per unit Area"?

Physics
1 answer:
Snowcat [4.5K]3 years ago
5 0

Answer&Explanation:

Since dimensional formula is the way of expressing physical quantity in terms of it's dimension;

Mass per unit area will be,,

Mass=M

Area=L×L=L²

Therefore dimensional formula is=ML^-2 and not M/L²

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A proton is released in a uniform electric field, and it experiences an electric force of 2.04×10−14 N toward the south.
Lemur [1.5K]

Answer:

Part A:

E=127500N/C\\E=1.275*10^{5} N/C

Part B:

Option B (Towards the South)

Explanation:

Part A:

Magnitude if electric field E:

E=Force/charge

Force=2.04×10−14 N

Charge=1.6×10−19 C

E=\frac{2.04*10^{-14}}{1.6*10^{-19}} \\E=127500N/C\\E=1.275*10^{5} N/C

Part B:

Option B (Towards the South)

As electron is experiencing the force towards south,it means the direction of the electric field is towards the south because direction of field lines is from positive to negative, so proton is moving towards south it means negative charge is in south to which proton is attracted. So electric field is towards South.

7 0
3 years ago
a particle of mass 1.3kg is sliding down a frictionless slope inclined at 30 to the horizontal. the acceleration of the particle
OverLord2011 [107]

Answer:

4.9\ m/sec^2

Explanation:

The computation of acceleration of the particle down the slope is shown below:-

data provided in the question

Particle of mass = 1.3 kg i,e sliding down

Inclined = 30 to the horizontal

based on the above information

Force is given by

N = mg\ cos \theta ............ 1

and sliding force is given by

F = mg\ sin\alpha

a = g(sin\ 30^{\circ})

= 9.8\times \frac{1}{2} m/sec^2

= = 4.9\ m/sec^2

Hence, the acceleration of the particle down the slope is 4.9 m/sec^2

4 0
3 years ago
If an object emits or reflects light, A. it has a smooth surface. B. it can be seen by the eye. C. it must be the color white. D
kirill [66]

Answer:

It can be seen by the eye

Explanation:

Took the test

5 0
3 years ago
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There are a couple of things one can do to promote Americanism and love of one's country. One thing that can be done is the promotion of American history and the explanation of why, how, and what has America achieved thus far and why that is something that should be looked at with respect. 
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If you were creating a lamp by hand what type of material would you chose for the wiring and what material would you chose to co
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