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3 years ago

Answer these questions please and you will get the brain list

Physics

1 answer:

Naddika [18.5K]3 years ago

7 0

I am using the equation F=ma (force equals mass times acceleration) to solve these problems.

1. You are looking for force, and have mass and acceleration. You just plug in the values for mass and acceleration to get the force needed.

F=(15kg)(5m/s^2)

F=75N

2. Again, you are looking for force, and just need to plug in the values for mass and acceleration

F=(3kg)(2.4m/s^2)

F=7.2N

3. In this problem, you have force and mass, but need to find acceleration. To do this, you need to get acceleration alone on one side of the equation - divide each side by m. Your equation will now be F/m=a

a=(5N)/(3.7kg)

a=18.5m/s^2

I did not use significant figures. Let me know if you need to do that and need any help on that. Hope this helps!

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<h3>Answer;</h3>

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<h3>Explanation;</h3>

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* 1a Average speed

ruslelena [56]

Explanation:

$\implies v_{av} = \dfrac{total \: displacement}{total \: time}$

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3 years ago

An automobile rounds a curve of radius 50.0 m on a flat road.

bixtya [17]

Answer:

14m/s

Explanation:

Given parameters:

Radius of the curve = 50m

Centripetal acceleration = 3.92m/s²

Unknown:

Speed needed to keep the car on the curve = ?

Solution:

The centripetal acceleration is the inwardly directly acceleration needed to keep a body along a curved path.

It is given as;

a = $\frac{v^{2} }{r}$

a is the centripetal acceleration

v is the speed

r is the radius

Now insert the parameters and find v;

v² = ar

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3 years ago

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Alex777 [14]

Answer:

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White light reacts with chemicals in the air to produce seven colors.

Explanation:

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In nature, white light is separated into its constituent wavelengths when white light interacts with substances in the atmosphere.

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