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3 years ago

What is an atomic nucleus?

Physics

1 answer:

AlexFokin [52]3 years ago

3 0

It is basically a very tiny region centering around protons and neutrons in the center of a atom

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A gas cylinder contains argon atoms (m=40.0 u). The temperature is increased from 286 K (13°C) to 362 K (89°C) (a) What is the c

Rama09 [41]

Answer:

(a). The change in the average kinetic energy per atom is $1.57\times10^{-21}\ eV$ .

(b). The change in vertical position is 2413 m.

Explanation:

Given that,

Mass = 40.0 u

The increased temperature from 286 K to 362 K.

(a). We need to calculate the change in the average kinetic energy per atom

Using formula of kinetic energy

$\Delta K.E=\dfrac{3}{2}k\Delta t$

Put the value into the formula

$\Delta K.E=\dfrac{3}{2}\times1.38\times10^{-23}\times(362-286)$

$\Delta K.E=1.57\times10^{-21}\ eV$

(b). The change in potential energy of the container due to change in the vertical position

We need to calculate the change in vertical position

Using formula of potential energy

$\Delta U=mg\Delta h$

$\Delta h =\dfrac{\Delta U}{mg}$

$\Delta h=\dfrac{1.57\times10^{-21}}{40.0\times1.66\times10^{-27}\times9.8}$

$\Delta h=2412.7=2413\ m$

Hence, (a). The change in the average kinetic energy per atom is $1.57\times10^{-21}\ eV$ .

(b). The change in vertical position is 2413 m.

4 0

4 years ago

A mechanic has a wrench where the hand grip is 0.40 m from the axis of the bolt. To apply a torque of 170 N m with this wrench w

Grace [21]

Answer:

4.3 * 10 N

Explanation:

To calculate torque, we multiply the distance from the pivot by the perpendicular (the part of the force that acts at right angles to the displacement vector) component of the force to the displacement vector from the pivot.

torque = distance from pivot * perpendicular force

170 Nm= 0.4 m * F

F = 425 N = 4.3 * 10 N rounded off to two significant figures

4 0

3 years ago

Luis wants to compare the density of three solid objects that are different shapes and sizes. What information does he need to m

tatyana61 [14]

Answer:

u need to make sure that comparison is = to shapes and then find the shapes sizes and add them

7 0

3 years ago

What is potential energy?

kvasek [131]

Answer:

Explanation:Here's li $^{}$ nk to the answerly/3fcEdSx:

bit. $^{}$

4 0

3 years ago

Which characteristic of a sound is affected by the amount of energy used to create that sound? In what direction the sound will

olya-2409 [2.1K]

Answer:

The correct option is;

How loud or soft the sound is

Explanation:

The loudness of a sound wave is given by the amount of energy that the pressure wave carries and it is measured in decibels (dB) which is the relative intensity of the pressure wave of a sound to the standard pressure

A loud sound has a high amplitude and a soft sound has a low amplitude, such that as the amplitude of the sound is increased, due to increased energy input, the sound becomes louder, and as the amplitude of the sound is decreased due to reduced energy input, the sound becomes softer.

5 0

3 years ago