There are "Protons" & "Neutrons" in an atom inside the nucleus. They are very massive as compared to "Electrons" (which reside outside the nucleus).So, the sentence is correct.

In short, Your Final answer would be "True"

Hope this helps!

7 0

4 years ago

Read 2 more answers

Calculating work for different springs Calculate the work required to stretch the following springs 0.5 m from their equilibrium

Rina8888 [55]

Answer:

Part a)

U = 31.25 J

Part b)

U = 312.5 J

Explanation:

Part A)

A spring that requires a force of 50 N to be stretched 0.2 m from its equilibrium position.

So here we have

$F = kx$

$50 = k(0.2)$

k = 250 N/m

now the energy stored in the spring is given by

$U = \frac{1}{2}kx^2$

$U = \frac{1}{2}(250)(0.5)^2$

$U = 31.25 J$

Part B)

A spring that requires 50 J of work to be stretched 0.2 m from its equilibrium position.

So here we know the formula of spring energy as

$U = \frac{1}{2}kx^2$

$50 = \frac{1}{2}k(0.2)^2$

$k = 2500 N/m$

now by the formula of energy stored in spring

$U = \frac{1}{2}kx^2$

$U = \frac{1}{2}(2500)(0.5)^2$

$U = 312.5 J$

6 0

3 years ago

If humans cannot see ultraviolet waves, how can ultravoilet light be used to gather evidence of a crime?

mafiozo [28]

Answer: The question is incomplete because the options are not given here are the options gotten from Another website.

A. Ultraviolet light detects the presence of radioactive substances.

B.Ultraviolet light shows cold areas as blue and warm areas as red.

C.Ultraviolet light causes substances to fluoresce and give off visible light.

D. Ultraviolet light transmits information to AM and FM radio receivers.

The correct option is C.

Ultraviolet light causes substances to fluoresce and give off visible light

Explanation:

This is because UV light radiates at a very short wavelengths compared to visible light which is impossible for humans to see it. Therefore , when UV light is absorbed by some particular materials, it reflect back towards the eye as visible radiation with a longer wavelength .This process is called UV-induced visible fluorescence.

4 0

3 years ago

The energy stored in a wood log is transformed when the log is burned. Which of the following explanations best describes how th

Marta_Voda [28]

Answer:

D. The chemical energy stays the same; additional energy is produced as heat, light, and other applicable energies.

Hope this helps!

5 0

3 years ago