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4 years ago

CAN SOMEONE PLEASE HELP ME WITH MY PHYSICS QUESTIONS? I NEED CORRECT ANSWERS ONLY!

Physics

1 answer:

BARSIC [14]4 years ago

5 0

<h2>Right answer: acceleration due to gravity is always the same </h2><h2 />

According to the experiments done and currently verified, in vacuum (this means there is not air or any fluid), all objects in free fall experience the same acceleration, which is <u>the acceleration of gravity</u>.

Now, in this case we are on Earth, so the gravity value is $9.8\frac{m}{s^{2}}$

Note the objects experience the acceleration of gravity regardless of their mass.

Nevertheless, on Earth we have air, hence <u>air resistance</u>, so the afirmation <em>"Free fall is a situation in which the only force acting upon an object is gravity" </em>is not completely true on Earth, unless the following condition is fulfiled:

If the air resistance is <u>too small</u> that we can approximate it to <u>zero</u> in the calculations, then in free fall the objects will accelerate downwards at $9.8\frac{m}{s^{2}}$ and hit the ground at approximately the same time.

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A block M = 1.25 kg is pulled up along an inclined plane by a constant force F which is parallel to the incline as shown. The co

olga2289 [7]

F would 0.825 because the coefficient of kinetic friction between the block and the plane surface uk of 0.35

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3 years ago

If the temperature of a gas is increased by 10x, what will happen to the volume?

xxMikexx [17]

The volume of a gas will increase by ten times if the temperature is increased by ten times.

<h3>Relationship between the volume of a gas and temperature</h3>

The relationship between the volume of a gas and its temperature is explained in Charles' law of gases which states that:

The volume of a fixed mass of gas is directly proportional to its temperature provided the pressure of the gas is kept constant.

This means that if the temperature of a gas is increased by any given factor, the volume increases by the same factor proportionally.

Therefore, if the volume of a gas will increase by ten times if the temperature is increased by ten times.

Learn more about gas volume and temperature at: brainly.com/question/18706379

8 0

3 years ago

a 100 kg person travels from sea level to an altitude of 5000 m. By how mans newtons does their weight change?

Bumek [7]

Answer:

Thus, the change in the weight of the person is 1.6N , option c is correct.

Explanation:

3 0

2 years ago

PLLLZ HELP Which of the following is a seamount?

o-na [289]

1. The seamount of the following given option is option D, i.e. Loihi.

2. Hawaii would be the location for the most active volcano according to the picture given.

Answer: Option D and Option B

<u>Explanation:</u>

1. Loihi is a seamount, which is a uplifted mountain risen to a certain altitude from the oceanic floor, but has no connection with the sea floor and hence do not come into the purview of being an island. sea mount are thus known as the submarine peak.

2. According to the diagram given, active site for volcano is Hawaii. the reason being that the hot spot for the volcanic activity is found beneath the Hawaiin island, whose tremendous stress is experienced below the fault line of Hawaii making it the most active site for volcano as per the seismological findings.

4 0

4 years ago

An object in motion will have a speed which is a scaler , or ( blank ) which is a vector .

mylen [45]

Answer:

Velocity

Explanation:

Objects in motion usually have a speed which is scalar or velocity which is a vector.

A scalar quantity is one with magnitude but has no directional attribute.

A vector quantity is one with both magnitude and directional attribute.

Speed is a scalar quantity that describes the magnitude of motion a body accrues.

Velocity is a vector quantity that describes both the magnitude of motion and the direction of motion in a body.

3 0

3 years ago