Answer:
9 times 59 is 531. 531+240= 771 she needs to work 59 hours.
Step-by-step explanation:
Answer:
8:6 and 16:12
Step-by-step explanation:
Answer:
At 43.2°.
Step-by-step explanation:
To find the angle we need to use the following equation:

Where:
d: is the separation of the grating
m: is the order of the maximum
λ: is the wavelength
θ: is the angle
At the first-order maximum (m=1) at 20.0 degrees we have:

Now, to produce a second-order maximum (m=2) the angle must be:


Therefore, the diffraction grating will produce a second-order maximum for the light at 43.2°.
I hope it helps you!
The 3rd one on top is correct
Answer:
around £500
Step-by-step explanation:
plss give brailiest