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almond37 [142]
3 years ago
10

Is it ever possible for the work done by friction to increase the kinetic energy of an object?

Physics
1 answer:
sweet-ann [11.9K]3 years ago
3 0
Honestly I don’t really know in my opinion

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What type of electromagnetic radiation is being used in the picture?
pashok25 [27]

Answer: b i think

Explanation:

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3 years ago
Place a small object on the number line below at the position marked zero. Draw a circle around the object. Mark the center of t
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It’s is D bc it is and idk you should do it
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The Hall effect can be used to calculate the charge-carrier number density in a conductor. A conductor carrying current of 2.0 A
marysya [2.9K]

Answer:

option D

Explanation:

given,

A conductor is carrying current = 2.0 A is 0.5 mm thick

Hall voltage = 4.5 x 10-6 V

uniform magnetic field  =  1.2 T

density of the charge = n =?

hall voltage =V_h =\dfrac{i\ B}{n\ e\ L}

n = \dfrac{i\ B}{V\ e\ L}

n = \dfrac{2 \times 1.2 }{4.5 \times 10^{-6}\times 1.6 \times 10^{-19} \times 0.5 \times 10^{-3}}

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hence the correct answer is option D

7 0
3 years ago
Please help giving 15 points<br> How do you calculate the density of an object?
Elis [28]
You first find the mass and the volume of that object. Then you divide mass ÷ volume
3 0
3 years ago
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How does the electrostatic force compare with the strong nuclear force in the
diamong [38]

Answer:

Strong nuclear force is 1-2 order of magnitude larger than the electrostatic force

Explanation:

There are mainly two forces acting between protons and neutrons in the nucleus:

- The electrostatic force, which is the force exerted between charged particles (therefore, it is exerted between protons only, since neutrons are not charged). The magnitude of the force is given by

F_E=\frac{kq_1 q_2}{r^2}

where k is the Coulomb's constant, q1 and q2 are the  charges of the two particles, r is the separation between the particles.

The force is attractive for two opposite charges and repulsive for two same charges: therefore, the electrostatic force between two protons is repulsive.

- The strong nuclear force, which is the force exerted between nucleons. At short distance (such as in the nucleus), it is attractive, therefore neutrons and protons attract each other and this contributes in keeping the whole nucleus together.

At the scale involved in the nucleus, the strong nuclear force (attractive) is 1-2 order of magnitude larger than the electrostatic force (repulsive), therefore the nucleus stays together and does not break apart.

3 0
2 years ago
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