Ask question

Ask question

All categories

3 years ago

5

A constant force is applied to an object, causing the object to accelerate at 9.0 m/s2 . What will the acceleration be if the fo

rce is doubled?

1 answer:

lbvjy [14]3 years ago

4 0

When the constant force applied to an object, causing an acceleration of 9.0 m/s²,<u> is doubled</u>, the final acceleration is also doubled.

The acceleration is related to the force by Newton's second law:

$F = ma$

Where:

F. is the force applied

m: is the object's mass

a: is the acceleration

For the first case, when a constant force is applied and the acceleration is 9.0 m/s², we have:

$F_{1} = ma_{1} = 9m$ (1)

Now, when the <u>force is doubled</u>:

$F_{2} = ma_{2}$

$2F_{1} = ma_{2}$

$a_{2} = \frac{2F_{1}}{m} = \frac{2*9m}{m} = 18 m/s^{2}$

Therefore, when the <u>force doubles</u>, the acceleration also doubles.

To find more about Newton's second law, go here: brainly.com/question/23845187?referrer=searchResults

I hope it helps you!

You might be interested in

Which best describes how magnesium and oxygen bond?

Lostsunrise [7]

Answer:

They form an ionic bond by exchanging two electrons.

Explanation:

7 0

3 years ago

Shondra takes notes in class. I. Electromagnetic Waves II. The ability to work - Has many forms - Mechanical III. Potential ener

3241004551 [841]

The waves that are related to both electricity and magnetism are known as (EM) waves .electromagnetic Waves' this line is about a different topic than the rest of Shondra’s notes.

<h3 /><h3>What is an electromagnetic wave?</h3>

The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves. These waves are made up of time-varying electric and magnetic fields that travel over space.

These waves, which are related to electricity and magnetism, would undoubtedly spread in space. The waves that are related to both electricity and magnetism are known as electromagnetic (EM) waves.

These waves are made up of time-varying electric and magnetic fields that travel over space. These waves, which are related to electricity and magnetism, would undoubtedly spread in space.

Hence option 1 is right because the 'Electromagnetic Waves' these line is about a different topic than the rest of Shondra’s notes.

To learn more about the electromagnetic wave refer to the link;

brainly.com/question/8553652

7 0

3 years ago

What's the general relationship between mass and gravitational force ?

Hitman42 [59]

Answer:

Gravity is the attraction between two objects that have mass. The amount of gravity is directly proportional to the amount of mass of the objects and inversely proportional to the square of the distance between the objects. Gravity is a force that increases the velocity of falling objects - they accelerate.

Explanation:

3 0

3 years ago

If the index of refraction of a medium is 1.4, determine the speed of light in that medium.

Damm [24]

The speed of light in that medium is $2.14 \times 10^8 \ m/s$ .

<u>Explanation:</u>

It is known that the light's speed is constant when it travels in vacuum and the value is $3 \times 108 m/s$ . When the light enters another medium other than vacuum, its speed get decreased as the light gets refracted by an angle.

The amount of refraction can be determined by the index of refraction or refractive index of the medium. The refraction index is measured as the ratios of speed of light in vacuum to that in the medium. It is represented as η = $\frac {c}{v}$

So, here η is the index of refraction of a medium which is given as 1.4, c is the light's speed in vacuum ( $3 \times 10^8 ms^-^1$ ) and v is the light's speed in that medium which we need to find.

$1.4= \frac{(3 \times 10 ^ 8)} {v}$

$v= \frac {(3 \times 10^8)}{1.4} =2.14 \times 10^8 \ m/s$

Thus the speed of light in that medium is $2.14 \times 10^8 \ m/s.$

3 0

3 years ago

Question #1: The visible part of the EM spectrum ranges from about 390 nanometers to about 720 nanometers. A nanometer (nm) is 1

mojhsa [17]

Answer:

The blue light has the highest energy.

Explanation:

Body that is hot enough emits light as consequence of its temperature. For example, an iron bar in contact with fire will start to change colors as the temperature increases until it gets to a blue color. That its know as Wien's displacement law, which establishes that the peak of emission for the spectrum will be displaced to shorter wavelengths as the temperature increases.

The same scenario described above can be found in the star, a star with higher temperature will have a blue color and one with lower temperature will have a red color.

$T = \frac{2.898x10^{-3} m. K}{\lambda max}$ (1)

The energy of each wavelength can be determined by means of the following equation:

$E = h\nu$ (2)

but $\nu = \frac{c}{\lambda}$ , therefore:

$E = \frac{hc}{\lambda}$ (3)

Where h is the planck's constant and $\nu$ is the frequency.

Notice that it is necessary to express the frequency in units of meters for a better representation of the energy.

$\nu_{blue} = 400nm . \frac{1x10^{-9}m}{1nm}$ ⇒ $4x10^{-7}m$

$\nu_{red} = 720nm . \frac{1x10^{-9}m}{1nm}$ ⇒ $7.2x10^{-7}m$

Case for the bluest light:

$E = \frac{(6.626x10^{-34}J.s)(3x10^{8}m/s)}{4x10^{-7}m}$

$E = 4.96x10^{-19}J$

Case for the reddest light:

$E = \frac{(6.626x10^{-34}J.s)(3x10^{8}m/s)}{7.2x10^{-7}m}$

$E = 2.76x10^{-19}J$

Equation 3 show that if the wavelength is lower the energy will be greater (inversely proportional).

Hence, according with the result and what was explained above, the blue light has the highest energy.

7 0

3 years ago