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3 years ago

Which of the following accurately describes properties of valence?

1 answer:

8 0

The statement that accurately describes properties of valence is A. The smaller the number of electrons an atom has to borrow or to lend, the greater the activity of the atom.

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What is the frequency of a sound wave having a velocity of 341 meters/second and a wavelength of 0.8 meters?

Brums [2.3K]

We know, Frequency = speed / wavelength
f = 341 / 0.8
f = 426.25 Hz

In short, Your Answer would be 426.25 Hz

Hope this helps!

6 0

3 years ago

Read 2 more answers

Light of wavelength 648.0 nm is incident on a narrow slit. The diffraction pattern is viewed on a screen 57.5 cm from the slit.

boyakko [2]

Answer:

$71.0 \mu m$

Explanation:

The formula for the single-slit diffraction is

$y=\frac{n\lambda D}{d}$

where

y is the distance of the n-minimum from the centre of the diffraction pattern

D is the distance of the screen from the slit

d is the width of the slit

$\lambda$ is the wavelength of the light

In this problem,

$\lambda=648.0 nm=6.48\cdot 10^{-7}m$

$D=57.5 cm=0.575 m$

$y=1.05 cm=0.0105 m$ , with n=2 (this is the distance of the 2nd-order minimum from the central maximum)

Solving the formula for d, we find:

$d=\frac{n\lambda D}{y}=\frac{2(6.48\cdot 10^{-7} m)(0.575 m)}{0.0105 m}=7.10\cdot 10^{-5} m= 71.0 \mu m$

6 0

3 years ago

If an earthquake occurred in Miami, Florida, then how long would it take for a seismic station in Seattle, Washington, to pick u

Juliette [100K]

0.017s

Explanation:

Given parameter

Distance = 5000km = 5 x 10⁶m

Unknown:

time taken = ?

Solution:

We use the normal speed equation to solve this problem as we take the speed of the wave to be 3 x 10⁸m/s.

Speed = $\frac{Distance }{Time taken}$

Inputting the parameters:

Time taken = $\frac{distance }{velocity of the wave}$

Time taken = $\frac{ 5 000000}{3 00000000}$ = 0.017s

Learn more:

Earthquake brainly.com/question/11292835

#learnwithBrainly

8 0

3 years ago

A seesaw is an example of a first class lever, true or false?

kramer

My guess is false because a seesaw goes up and down on both sides, while a lever is when u pick something up and down.

sorry if I'm wrong but I hope it helps :)

6 0

3 years ago

you are running with your friend on a hot day. your body begins to warm up. describe how your skin responds to the excess heat.

Serga [27]

You start to sweat, its the bodies way of cooling you down.
Hope this helps! :)

Please give brainliest :D

6 0

4 years ago

Read 2 more answers