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3 years ago

Who’s good at algebra?

Physics

2 answers:

lutik1710 [3]3 years ago

5 0

Answer:

I'm alright................

k0ka [10]3 years ago

3 0

What’s the question

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Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proport

netineya [11]

Answer:

$[F]=[MLT^{-2}]$

Explanation:

Newton’s second law states that the acceleration a of an object is proportional to the force F acting on it is inversely proportional to its mass m. The mathematical expression for the second law of motion is given by :

F = m × a

F is the applied force

m is the mass of the object

a is the acceleration due to gravity

We need to find the dimensions of force. The dimension of force m and a are as follows :

$[m]=[M]$

$[a]=[LT^{-2}]$

So, the dimension of force F is, $[F]=[MLT^{-2}]$ . Hence, this is the required solution.

5 0

3 years ago

When a 100-N force acts horizontally on an 8.0-kg chair, the chair moves at a constant speed across the level floor. Which state

TiliK225 [7]

Answer:

The applied force is greater than the frictional force.

Explanation:

the chair moves at a constant speed therefore, the answer is not A or C.

if there is no friction then the chair would accelerate and it would not be at a constant speed.

hence, the only possible answer is B.

7 0

3 years ago

Joan wants to test if salt lowers the temperature at which water boils.

ohaa [14]

In order to build a hypothesis, Joan should take an educated guess at what the effect of adding salt to the water will be on the water's boiling point. For example, the hypothesis may be,"The boiling point will increase". This hypothesis is one that can be verified or rejected via experimentation. The next step for Joan would be to set up an experiment to test this hypothesis.

6 0

3 years ago

Read 2 more answers

What is the amount of force required to accelerate a 20 kg object to 5 m/s˛?

Llana [10]

Answer:

Force = 100N

Explanation:

Force = mass × acceleration

3 0

3 years ago

Which person would experience the greatest force of impact in a sudden collision? A 200 lb. man traveling 20 mph b 150 lb. woman

Alisiya [41]

Answer:

The 150 lb woman at 30 mph would experience the greatest force of impact in a sudden collision.

Explanation:

Momentum

The force of impact exerted on an moving object that suddenly stops or changes its movement is measures by the physics magnitude called Impulse, which can be computed with the formula

$I=F.t$

Where F is the force and t is the time that force acts to produce the impact on the object. The impulse is also defined as the change in the momentum of the object:

$I=\Delta p=p_2-p_1$

Or equivalently

$I=m(v_2-v_1)$

The question describes four situations where different persons and object suffer impact that make them stop from their moving state. Thus $v_2=0$ and the impulse is