2. Calculate the energy in joules of a photon whose frequency is 7.55×1014 Hz.

1 answer:

8 0

The energy of a photon is given by
E = h × v

where:
E is the energy in joules/photon
'h' is the constant 6.63 × 10⁻³⁴
'v' is the frequency 7.55 × 10¹⁴

Substitute 'h' and 'v' into the formula we have

E = (6.63×10⁻³⁴) × (7.55×10¹⁴)
E = (6.63×7.55) × (10⁻³⁴ × 10¹⁴)
E = 50.0565 × 10⁽⁻³⁴⁺¹⁴⁾
E = 50 × 10⁻²⁰ joules/photon

You might be interested in

Write 0.105 as a fraction

Orlov [11]

I think it would be
21/200

3 0

3 years ago

Read 2 more answers

Decline of 11.3%

Katarina [22]

Answer:

decay.

Step-by-step explanation:

decline means reduce, which is a negative term. decay is also negative.

decimal form= .113 or .11

3 0

2 years ago

The graph to the right represents Mario's mile time in minutes,y, based

Mashcka [7]

The line slopes downward. More specifically, as x increases, y decreases. Since x is the number of hours trained and y is the mile time, this must mean that the more Mario trains, the shorter his mile time gets.

8 0

2 years ago

For every girl taking classes at the martial arts school, there are 3 boys who are taking classes at the school. if there are 23

just olya [345]

G = number of girls taking the martial arts classes
and
B = number of boys taking the martial arts classes

We know that for every girl, there are 3 boys. Therefore, the proportion of girls to boys is:
$\frac{G}{B}$ = $\frac{1}{3}$

When you simplify this ratio by cross-multiplying you get:
3G = B
When you think about this, it makes sense because you know that there are 3 times as many boys as there are girls. Therefore you would need to multiply the number of girls by 3 to equal the number of boys in the class.

We know that there are 236 total people in the class, Therefore we know that:
G + B = 236

You can replace the B in the equation above with your simplified ratio to solve, since both contain the variable B:

G + B = 236
is the same as
G + 3G = 236 ->
4G = 236 ->
G = 59

So there are 59 girls in the class, but you need to figure out the number of boys, not girls. Therefore, subtract 59 from 236 to get to the final answer:

G + B = 236
59 + B = 236
59 + B - 59 = 236 - 59
B = 177

6 0

3 years ago

Read 2 more answers

Both triangles are similar. The area of the larger triangle is about 382 ft2. Which is the best approximation for the area of th

melisa1 [442]

Answer: SECOND OPTION

Step-by-step explanation:

You must find the ratio of the sides of the triangle, as following:

$r=\frac{30}{42}=\frac{5}{7}$