When placed at a certain point, a

The light emitted by an argon laser light includes light with a wavelength of 488 nm. what is the frequency of this light? 6.15

Paraphin [41]

Frequency and wavelength are inversely related. That is, when frequency increases, the value of the wavelength decreases and vice versa. The constant of proportionality of the relation is the speed of light that has a value of 3.0x10^8 m/s. We calculate as follows:

wavelength = speed of light /frequency
488x10^-9 = 3.8x10^8 / frequency
frequency = 6.15x10^14 /s = 6.15x10^14 Hz ------> OPTION 3

3 0

4 years ago

Calculate the number of millimeters in 2.13 kilometer.

lapo4ka [179]

The answer is 2,130,000

6 0

4 years ago

An archer fish spies a meal of a grasshopper sitting on a long stalk of grass at the edge of the pond in which he is swimming. I

andrew-mc [135]

Answer:

The archerfish must spit at a minimum speed of $3.43m/s$ at an angle of $69.14\°$ above the horizontal.

Explanation:

Hi

First of all, we need to find the angle above the horizontal at which the archerfish must spit, as we can see in the attachment this angle is $\Theta = 69.14\°$ .

Then we use the formula $h=\frac{v_{0}^{2}sin^{2} \Theta}{2g}$ , as we clear it for $v_{0}$ , we obtain, $v_{0}=\frac{\sqrt{2gh} }{sin\Theta}=\frac{\sqrt{2(9.8m/s^{2})(0.525m)} }{sin(69.14\°)}=3.43m/s$ , therefore the archerfish must spit at a minimum speed of $3.43m/s$ at an angle of $69.14\°$ above the horizontal.