<u>Answer:</u> The speed of the electron is 
<u>Explanation:</u>
To calculate the speed of electron for given wavelength, we use the equation given by De-Broglie's, which is:

where,
= De-Broglie's wavelength = 
h = Planck's constant = 
m = mass of the electron = 
v = speed of the electron = ?
Putting values in above equation, we get:

Hence, the speed of the electron is 
Answer:
The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period.
Explanation:
The plants in the northern and southern states during the summer receive the most sunlight and experience a growth period because in the summer season, plants receive more solar radiation as compared to winter season. Plant needs more solar radiation for higher growth. Photosynthesis is the process which helps the plant to produce more vegetation and this will only happens when the sunlight is high so we can say that summer season enables the plant to have more vegetative growth.
Answer:
There are four containers: a 100-mL beaker, 250-mL Erlenmeyer flask, a 500-mL beaker, and a 1-L Florence flask. They contain coffee, tea, water, and milk, although not in that order. Use the following facts to identify the beverage in each container.
a. the 500-mL container has a beverage commonly associated with breakfast.
b. the largest container has a colorless liquid (i.e. neither yellow nor orange).
c. the beverage in the smallest container is opaque. (you cannot see through it).
d. One clear liquid is in a container half the volume of a colored liquid.
e. The only combustible liquid has exactly twice the volume of an opaque liquid.
Explanation:
a. The 500-mL container has a beverage commonly associated with breakfast is coffee.
b. The largest container has a colorless liquid (i.e. neither yellow nor orange) water.
c. The beverage in the smallest container is opaque. (you cannot see through it) milk.
d. One clear liquid is in a container half the volume of a colored liquid tea.
Answer:
3
Explanation:
To balance the equation, you need the same number of each atom on both the left and right sides of the equation.
The balanced equation would be:
2 Fe + 3 S ---> Fe2S3
You then have:
2 Fe on both sides
3 S on both sides