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lapo4ka [179]
3 years ago
9

What is the best way to study for physics?

Physics
1 answer:
leva [86]3 years ago
8 0

Take good notes, actually do your homework, and apply physics to your everyday life. Don't treat physics like a subject you can easily push away and just cram into your head before assessments.

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If two objects are under the influence of equal forces, they have the same acceleration.
marshall27 [118]

Answer:

Explanation:

If two objects are under the influence of equal forces, they have the same acceleration  - False .

If their mass differs , their acceleration will also change.

1 )During the collision of a locomotive with a car, the car exerts an equal size force on the locomotive as the locomotive exerts on the car

True because action and reaction forces are equal.

2. True False The net force which acts on an object which maintains a constant velocity is zero

True , because if acceleration is zero , net force will be zero.

3. True False An object's velocity will change if a net force acts on the object.

True , because , if there is acceleration , there is force.

True False A bicycle initially moving at a constant velocity will slow down unless a small net force is applied

False , A bicycle initially moving at a constant velocity will  not slow down

unless a small net force is applied .

7 0
3 years ago
Match the words of the preamble with the basic principle they best represent. Use each answer only once.
elena-s [515]

Unalienable rights are the natural rights to which all people are entitled.

The right of the people to alter or to abolish government means that the government exists to serve the people.

The words "governments are instituted among men" describe the idea of a social contract.

Answer: 1 and 6, 2 and 5, 3 and 4.

<u>Explanation:</u>

The government is a system in which the power to administer or to govern the country is given to that system and divided among the different organisations of that system. There is proper division of the power so that there is no abuse of the power by the government officials.

The government of the country is for the betterment of the country and for the welfare of the people of that country. They exist for the people and therefore the people have to right to change or abolish the people. There are certain unalienable rights given to the citizens which can not be taken from them.

4 0
3 years ago
Read 2 more answers
Explain concept of donor levels and accepter levels in extrinsic semiconductors and How can Fermi level be defined for conductor
nika2105 [10]

Answer:

DONORS: If the material for which it substitutes has more electrons than the original

ACCEPTORS: If the replacement material has fewer electrons than the original material

Fermi level: the point where the probability of finding the last electron is ½

Explanation:

When in a semiconductor material a small fraction of an element is replaced by another with different valences, an excess charge is created.

If the material for which it substitutes has more electrons than the original, there is an excess of electrons, these excess electrons are weakly bound in the material and their orbits are large, in an energy versus moment diagram their energy places them a little more below the conduction band, these materials are called DONORS.

If the replacement material has fewer electrons than the original material, one electron is missing to complete the bonds, so there is a movement of the other electrons, an easier way to analyze this movement of the (n-1) electrons is to suppose that The missing charge has a positive charge and to study its movement, this positive charge is called a hole, its binding energy is small so the orbit of the hole is large, in an energy diagram it is located a little above the band of valence, these are called ACCEPTORS

The Fermi level is defined as the point where the probability of finding the last electron is ½, when the temperature is changed the density of states of the bands changes, therefore the location point moves, but its [probability remains ½

5 0
3 years ago
A hot air balloon of total mass M (including passengers and luggage) is moving with a downward acceleration of magnitude a. As i
frez [133]

Answer:

When balloon moves in the downward direction two forces acts on it.  

    i) Force exerted by air in the upward direction  

    ii) Weight  

According to newton’s second law of motion:  

      Sum of forces = Ma  

                W – F = Ma  

               Mg – F = Ma     …….. (i)  

when some of the mass m is dropped and balloon is moving in upward direction with acceleration a/2 then,  

               F – W = (M-m)a/2

               F – (M-m)g = (M-m)a/2

               F – Mg + mg = Ma/2 – ma/2 ….. (ii)  

Adding equation (i) and (ii)  

              mg = M(3a/2) – ma/2

              m(g + a/2) = M(3a/2)

              m = M(3a/2)/(g + a/2)

5 0
3 years ago
Pls pls help me out AHH, what is not true about MEIOSIS?
agasfer [191]

Answer:

B.

Explanation:

This is not true as the number of chromosomes in the daughter cells are half the number in the parent's cells

4 0
3 years ago
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