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Debora [2.8K]
3 years ago
12

Which arrangement in relative size is correct? (< sign means 'smaller than')

Physics
2 answers:
dusya [7]3 years ago
6 0
The right option is D.
galina1969 [7]3 years ago
3 0

Answer:

D. electron < neutron < atomic nucleus < atom

Explanation:

size of an electron = 2.82 * 10^{-15} m.

size of a neutron = 0.8 * 10^{-15} m.

size of a atomic nucleus = 1.56 *  10^{-14} m.

size of an atom  =  0.1 - 0.5 nanometers

hence if we compare the size of all components we will see size of an electron is the smallest and size of an atom is the largest.

electron < neutron < atomic nucleus < atom

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What is a substance?
Alika [10]

Answer:

A single component that can’t be separated

brainliest please ;)

5 0
3 years ago
Does kinetic energy stay the same at all heights? pls help I have 12 minutes to finish the project and the teacher won't help me
Alex Ar [27]

Answer:

Kinetic energy does not stay the same at all heights

Explanation:

Well as the height and wind increase so does the kinetic energy it's like when you fall as you are about to hit the floor you speed increases

HOPE THIS HELPS YA :)

7 0
3 years ago
A gyroscope flywheel of radius 3.25 cm is accelerated from rest at 11.6 rad/s2 until its angular speed is 1820 rev/min. (a) What
kati45 [8]

Explanation:

The given data is as follows.

           radius (r) = 3.25 cm,    \alpha = 11.6 rad/s^{2}

Now, we will calculate the tangential acceleration as follows.

          a_{tangential} = \alpha \times r

Putting the given values into the above formula as follows.

         a_{tangential} = \alpha \times r

                      = 11.6 rad/s^{2} \times 3.25 cm

                      = 37.7 rad cm/s^{2}

Thus, we can conclude that the tangential acceleration of a point on the rim of the flywheel during this spin-up process is 37.7 rad cm/s^{2}.

6 0
3 years ago
Describe what happens to chemical<br> bonds during a chemical reaction
dimulka [17.4K]

Explanation:

The bonds that keep molecules together break apart and form new bonds during chemical reactions, rearranging atoms into different substances. Each bond takes a distinct amount of energy to either break or form; the reaction does not take place without this energy, and the reactants stay as they were.

6 0
2 years ago
A police car is stopped at a red light facing west. When the light turned green, a sports car speeds past it heading west at wit
frutty [35]

Answer:

14 seconds

Explanation:

Distance covered by sports car is measured with 21*t where t is time.

Distance covered by police is measured with at^2/2(t-time, a-acceleration) as it doesnt have starting velocity. If the distances are equal(police catches sport car)

then we have 21t=3/2*t^2 Solving this equation we get t=14 & t=0;

excluding the starting point we have 14 seconds

3 0
3 years ago
Read 2 more answers
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