In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.
<h3>What is freezing?</h3>
It is a physical change in which liquids give off heat to form solids.
We have 210.0 g of water at 0°C. We can calculate the amount of heat given off when it freezes into ice using the following expression.
Q = ΔH°fus × m
Q = 0.334 kJ/g × 210.0 g = 70.1 kJ
where,
- Q is the heat released.
- ΔH°fus is the latent heat of fusion.
- m is the mass.
In the freezing physical change, when 210.0 g of water a 0 degrees freezes into ice, it gives off 71.0 kJ of heat.
Learn more about freezing here: brainly.com/question/40140
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Answer:
313, 0.60 s
Explanation:
wavelength
= speed/frequency
= 340/520
= 0.6538 m
Number of wavelengths
= 205/0.6538
= <u>313</u> (whole number)
Time delay
= distance/speed
= 204/340
= <u>0.60 s</u>
Answer:

Explanation:
The differential electric field
due to differential charge
at distance
from the origin is

but since
we have


integrating this from
to
we get

![E = 4k[(x_0+L)-x_0]](https://tex.z-dn.net/?f=E%20%3D%204k%5B%28x_0%2BL%29-x_0%5D)

putting in
and
we get
