is charles brushes discovery still used today?

Answer:

jkjkjkjkjkjkjkjkjkjkjk

Atomic Mass = The sum of protons and neutrons in an atom. (Third option).

Atomic Number - The number of protons in an atom. (First option).

Mass Number - Exact amount of protons and neutrons (Last option).

Protons and Electrons - Charged particles of an atom (Fifth Option).

Protons and Neutrons - Particles in the Nucleus of an atom (Fourth option).

Valence Electons - Outermost particles of a shell. (Second Option).

Hope this helped!

Answer:

I think

C- It's a greenhouse gas

Answer:

sorry

Explanation:

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

[tex]a = \frac{f}{m} \\ [/tex]

f is the force

m is the mass

We have

[tex]a = \frac{20}{4} = 5 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

i think the answer is infrared

Answer:

B

Large mountains ranges will form

Explanation:

Answer:

the first one is higher

Explanation:

i d k what the second one is

Answer:

0N

Explanation:

When you draw a free body diagram, You have a 7N arrow pointing left, and a 3N arrow pointing right. When you subtract the two, you still have a force of 4N on the left. However, seeing as how gravity is in play at a force of 4N, the two forces cancel out and you get 0N.

Answer:

5kg is 5000gm hope it helps

Answer:

Dark colors absorb more radiated heat from the sunlight while lighter colors reflect it. That's why wearing a black shirt on a sunny day makes you feel so much hotter than when you're wearing a white shirt!

Answer:

black

Explanation:

Light energy can be converted into heat energy. A black object absorbs all wavelengths of light and converts them into heat, so the object gets warm

Explanation:

the force effect the aeroplane and ship are Gravity and drug

Answer:

The answer is GRAVITY and DRUGS

Explanation:

Hope you have a good day :)

Answer:

1) Given acceleration due to gravity as 10N/kg

N/kg is the same as m/s². From W=mg

making g subject ... you have g = W/m

where m is in kg and W is in N

hence we have N/kg

So g=10ms-²

Gravitational Potential Energy=mgh

At height 4m

PE=6 x 10 x 4

=240J.

At height 6m

PE=6 x 10 x 6

=360J.

2) KE=1/2mv²

=1/2 x 6 x 5² =75J

When the speed is doubled... it becomes 2x

so V = 2x5=10ms-¹

KE=1/2 x 6 x 10² =300J.

3) KE=1/2mv²

KE is given as 100J

mass=0.5kg

Making V the subject

you have v² =2KE/m

v²=2 x 100/0.5

v²=400

taking square root

v=20ms-¹.

Have a great day✌

Answer:

The Answer is C

The speed of light in a vacuum is the same for all frames of reference.

Explanation:

Answer:

C .The speed of light in the vacuum is same for all frames of reference.

Explanation:

A set of abstract coordinate system that explains the position or motion of something mathematically and physically by the set of reference points and geometric points.

What is Special relativity ?

It explains the effect on mass ,time and space by the speed . It also relates the speed of light , mass and energy.

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Answer:

[tex]\boxed {\boxed {\sf 6 \ meters}}[/tex]

Explanation:

Work is the product of force and distance.

[tex]W=F*d[/tex]

We know that 96 Joules of work were done and a 16 Newton force was applied to the object.

Substitute the values into the formula.

[tex]96 \ J= 16 \ N * d[/tex]

First, let's convert the units. This will make cancelling units easier later in the problem. 1 Joule (J) is equal to 1 Newton meter (N*m), so the work of 96 Joules equals 96 Newton meters.

[tex]96 \ N*m= 16 \ N * d[/tex]

Now, solve for distance by isolating the variable, d. It is being multiplied by 16 Newtons and the inverse of multiplication is division. Divide both sides of the equation by 16 N.

[tex]\frac {96 \ N*m}{16 \ N}= \frac{16 \ N *d}{16 \ N}[/tex]

[tex]\frac {96 \ N*m}{16 \ N}=d[/tex]

The units of Newtons cancel.

[tex]\frac {96}{16} \ m = d[/tex]

[tex]6 \ m = d[/tex]

The object moved a distance of 6 meters.

Using the 3rd equation of motion:

= v² - u² = 2gs ------ [g = Acceleration due to gravity]

= v² - 20² = 2 × 10 × 300

= v² - 400 = 6000

= v² = 6000 - 400

= v = √5600

= v = 74.83 m/s

And yeah it's done :)

Answer:

You can not find out an answer with this information

Explanation:

Provide some sort of graph

Given :

A person stands 6.00 m from a speaker, and 8.00 m from an identical speaker.

To Find :

The wavelength of the first (n = 1) interference minimum (destructive).

Solution :

Since speaker are identical so they are in same phase.

For first destructive construction difference between the distance should be equal to half the wavelength .

So, [tex]8-6 = \dfrac{\lambda}{2}\\\\\lambda = 4 \ m[/tex]

Frequency is given by :

[tex]\nu = \dfrac{343}{4}\ Hz\\\\\nu = 85.75 \ Hz[/tex]

Hence, this is the required solution.

Answer: it’s 4

Next question maximum : 2

Explanation:

works for acellus

Answer:

the waves will appear horizontally on the florescent screen because the y-plates have been removed

Without the plates for vertical deflection, the CRO will only display the horizontal waveform on the fluorescent screen, with no vertical deflection.

CRO stands for Cathode Ray Oscilloscope. It is an electronic instrument used for visualizing and measuring various electrical and electronic waveforms. It works by displaying a graph of voltage versus time on the screen. This graph is generated by deflecting a beam of electrons, known as the cathode ray, across a screen coated with a phosphorescent material that emits light when struck by the electrons. The horizontal axis of the screen represents time, while the vertical axis represents the amplitude of the signal being measured. CROs are widely used in electronic engineering, telecommunications, and other fields for testing and analyzing signals.

Here in the Question,

If the plates for vertical deflection are removed in a Cathode Ray Oscilloscope (CRO), then the wave pattern on the fluorescent screen will be a straight line, with the height of the line depending on the voltage applied to the horizontal deflection plates.

This is because the CRO uses an electron beam to display the waveform of an electrical signal on a fluorescent screen. The electron beam is directed towards the screen by the deflection plates, which are typically placed perpendicular to each other.

When a voltage is applied to the vertical deflection plates, the electron beam is deflected vertically, resulting in a waveform on the screen. If the vertical deflection plates are removed, the electron beam will not be deflected vertically and will travel in a straight line towards the screen.

However, if a voltage is applied to the horizontal deflection plates, the electron beam will be deflected horizontally, resulting in a waveform that is displayed horizontally on the screen. The height of the waveform will be determined by the voltage applied to the horizontal deflection plates.

Therefore, without the plates for vertical deflection, the CRO will only display the horizontal waveform on the fluorescent screen, with no vertical deflection.

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Answer:

Explanation:

56) A

57) E

Answer:

The one to the left

Explanation:

Answer:

1.69 T

Explanation:

Applying,

F = BvqsinФ.................. Equation 1

Where F = Force, B = magnetic field, v = velocity, q = charge on an electron, Ф = angle between the electron and the field.

make B the subject of the equation,

B = F/(vqsinФ)............. Equation 2

From the question,

Given: F = 2.0×10⁻¹³ N, v = 7.4×10⁵ m/s, Ф = 90°

Constant: q = 1.60×10⁻¹⁹ C

Substitute into equation 2

B =  2.0×10⁻¹³/(7.4×10⁵×1.60×10⁻¹⁹×sin90°)

B = 0.169×10

B = 1.69 T

Answer:

(A)²

Explanation:

Atomic mass = density*volume of atom.

So, density of nucleus is in depend of mass number

d=

3

4

πr

3

Massno.

=

3

4

π×[1.3×10

−13

×A

1/3

]

3

A

=constant∗A

0

as R=R

0

A

1/3

(R

0

=1.1×10

−15

m)

The numerical value of the density of a nucleus of atomic number A is determined as 2.29 x 10¹⁷ kg/m³.

The density of the nucleus of atomic number A​ is calculated as follows;

ρ = m/V

where;

[tex]\rho = \frac{m}{V} \\\\\rho = \frac{m}{\frac{4}{3} \pi r^3} \\\\\rho = \frac{1.66 \times 10^{-27}}{\frac{4}{3} \pi (1.2 \times 10^{-15})^3} \\\\\rho = 2.29 \times 10^{17} \ kg/m^3[/tex]

Thus, the numerical value of the density of a nucleus of atomic number A is determined as 2.29 x 10¹⁷ kg/m³.

The complete question is below:

​find the numerical value of the density of a nucleus of atomic number A​ with a radius of  1.2 x 10⁻¹⁵ m and mass of 1.66 x 10⁻²⁷ kg.

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Answer:

9/10

Explanation:

Who u talm bout? I also agree I can name a few shiiii

Answer:

150 km/hr²

Explanation:

The data for the motion of the train includes;

The train starts from rest, therefore, the initial velocity of the train, u = 0 km/hr

The speed of the train after 0.5 hours, v = 75 km/hr

The change in time during the motion of the train, Δt = 0.5 hours

The acceleration, 'a', is the rate of change of velocity with time;

[tex]a = \dfrac{\Delta v}{\Delta t} = \dfrac{v - u}{\Delta t}[/tex]

Therefore, we have;

a = (75 km/hr - 0 km/hr)/(0.5 hr) = 150 km/hr²

a = 150 km/hr² = 150 km/hr² × 1,000 m/km × hr²/(3,600 s)² = 5/432 m/s²

The acceleration of the train, a = 150 km/hr² = 5/432 m/s².