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3 years ago

Which of the following is not found in the nucleus of an atom?

2 answers:

N76 [4]3 years ago

5 0

Electron revolves around the nucleus. Protons, neutrons are called nucleons because they form nucleus of the atom. Quarks are the fundamental particles which combines to form neutrons, protons and other particles.
Hence electron is the answer.

erastova [34]3 years ago

4 0

Electron are outside of the nucleus

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Can velocity and acceleration point in opposite direction?

ICE Princess25 [194]

Yes, therefore the object would then slow down

6 0

4 years ago

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A car accelerates along a straight road from rest to 90 km/h in 5.0 s. A) Find the magnitude of its average acceleration. B) Fin

egoroff_w [7]

Answer:

a) $A=5m/s^2$

b) $V=25m/s$

Explanation:

From the question we are told that:

Velocity $v=90km/h=25m/s$

Time $t=5.0s$

Generally From Newton's motion equation for Average acceleration is mathematically given by

$A=\frac{V-U}{t}$

Since its from Rest Therefore

$U=0$

$A=\frac{25m/s-0}{5s}$

$A=5m/s^2$

Generally the equation for Average Velocity is mathematically given by

$V=u+at$

$AT t=1.0s\\\\V=0+5(1)$

$V=5m/s$

$AT t=2.0s\\\\V=0+5(2)$

$V=10m/s$

$AT t=5.0s\\\\V=0+5(5)$

$V=25m/s$

6 0

3 years ago

81. A 560-g squirrel with a surface area of 930cm2 falls from a 5.0-m tree to the ground. Estimate its terminal velocity. (Use a

Irina18 [472]

Answer:

Explanation:

Given

mass of squirrel $m=560 gm$

Surface area of squirrel $A=930 cm^2$

and the area which face $A_f=\frac{A}{2}=465 cm^2$

height of tree $h=5 m$

Coefficient of drag $C=1$

drag Force $F_d=\frac{1}{2}C\cdot \rho \cdot A\cdot v^2$

Terminal velocity is given

$F_d=mg$

$\frac{1}{2}C\cdot \rho \cdot A\cdot v^2=mg$

$v=\sqrt{\frac{2\times m\times g}{\rho \times C\times A_f}}$

$v=\sqrt{\frac{2\times 0.560\times 9.8}{1.2\times 1\times 465\times 10^{-4}}}$

$v=13.9 m/s$

(b)Mass of person $m=56 kg$

$v^2-u^2=2gh$

$u=0$

$v=\sqrt{2gh}$

$v=\sqrt{2\times 9.8\times 5}$

$v=9.89 m/s$

7 0

3 years ago

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In the scientific method, what step follows the analysis? Hypothesis Conclusion Theory Experiment

Zarrin [17]

conclusion as last step. then see what happens next

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3 years ago

Compare and contrast both densely-ionizing and sparsely-ionizing radiation.

kherson [118]

Explanation:

Radiation biology is the study of the effects of ionizing radiation on living organisms, when this radiation is absorbed in biologic material, ionization and excitations occur in a pattern that depends on the type of radiation involved, considering how far the primary ionization events are separated in space, radiation can be sparsely ionizing (for example, an x-ray or a gamma-ray) or densely ionizing (for example, a proton or an alpha particles).

<em>DNA is the most critical biological target because of the limited redundancy of the genetic information it contains, most lesions are reparable, but those produced by densely ionizing radiation are generally less reparable than those produced by sparsely ionizing radiation. Densely ionizing (high LET) radiations, therefore, typically have a higher relative biological effectiveness.</em>

I hope you find this information useful and interesting! Good luck!

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3 years ago