Answer:
a. 
b. 
It is asked for 3 quarts of water because it prevents the temperature drop.
Explanation:
Given:
- mass of frozen cheese,
- quantity of water suggested for the given cheese,
- initial temperature of cheese,
- specific heat of cheese,
- initial temperature of water,
a.
- we have specific heat of water,
so now, we use the heat equation to find the amount of heat exchange during the process:
b.
when using 1 quart of water:
It is asked for 3 quarts of water because it prevents the temperature drop.
I dont get what you are asking. Is this true or false? or do you want me to give you an answer?
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.
Answer:
<em>a) 28877 AU</em>
<em>b) 1.795 sec</em>
<em></em>
Explanation:
Time it took the radio signal to reach earth = 4 hours = 4 x 3600 = 14400 s
speed of radio signal = speed of vacuum speed of light = 3 x 10^8 m/s
Distance traveled by this signal = speed x time
distance = 3 x 10^8 x 14400 = 4.32 x 10^12 m
One Astronomic unit AU is the distance between the Earth and the sun and it is approximately equal to 1.496 x 10^8 m
The distance traveled by the signal in AU = (4.32 x 10^12)/(1.496 x 10^8) = <em>28877 AU</em>
b) The minimum separation between Earth and Mars = 0.36 AU
This distance = 0.36 x 1.496 x 10^8 = 538560000 m
Time that will be taken for a radio signal to travel this distance = distance/speed
==> 538560000/(3 x 10^8) = <em>1.795 sec</em>
Hello.
The answer is <span><span>cell membrane.
Have a nice day</span></span>
