The answer is A because An Indicator" changes color when it comes in contact with an acid or a base
An indicator could be anything like:
1) Litmus paper
2) Bromothymol blue
3) Phenolphthalein
Answer:
33.33 m/sec
Explanation:
A baseball travels 200 metes in 6 seconds,
what is the baseball’s velocity?
use the formula: velocity = distance over time
where (d) distance = 200 m
and (t) time = 6 sec.
plugin values into the formula:
v = d / t
= 200 m / 6 sec
= 33.33 m/sec.
therefore, the baseball's velocity is 33.33 m/sec
I’m pretty sure it is caused by the heat of the sun warming it up back into its original state of tar
To solve this problem we will use the heat transfer equations, to determine the amount of heat added to the body. Subsequently, through the energy ratio given by Plank, we will calculate the energy of each of the photons. The relationship between total energy and unit energy will allow us to determine the number of photons
The mass of water in the soup is 477g
The change in temperate is

Use the following equation to calculate the heat required to raise the temperature:

Here,
m = Mass
c = Specific Heat


The wavelength of the ration used for heating is 
The number of photons required is the rate between the total energy and the energy of each proton, then

This energy of the photon is given by the Planck's equation which say:

Here,
h = Plank's Constant
c = Velocity of light
Wavelength
Replacing,


Now replacing we have,


Therefore the number of photons required for heating is 