Look at the two models of charges

PLZ HURRY NEED HELP ASAP!!!!!!!!!!!!!!

Bezzdna [24]

Answer: 1/R = 1/r1 + 1/r2 + 1/r3

Explanation:

Just did the test myself. Hope this helps!

6 0

3 years ago

What do changes in the biosphere, rising sea levels, drought and desertification, regional changes in temperature, and melting g

horrorfan [7]

Alright I'm not an expert on this, so you'll probably have to verify it with someone more qualified, but here's my idea (the summary is underlined at the bottom, but I added an explanation just because):
Humans are increasing the CO2 levels in our atmosphere, trapping a lot of the sun's heat in. Increased heat increases the chance of desertification and drought, and also causes regional temperatures to go up. The sun's rays are also hitting the icecaps, but the ice itself reflects most of the sun. However, the ocean absorbs the heat, causing the water around the ice to become warmer, just enough to cause them to melt a bit. This melting makes the ocean level rise. So to wrap up, humans are changing the biosphere causing the Earth to warm up, the icecaps and glaciers to melt, regional temperatures to increase, and the chance of desertification to also increase.
It took me FOREVER to write and word this well so I hope this helps. =)

4 0

3 years ago

how do i.... Find the angle between each pair of vectors below. (1 point each) a. a = 2x + 3y a = 4x + 2y

Shalnov [3]

Recall that the dot product between two vectors $\mathbf a$ and $\mathbf b$ satisfies

$\mathbf a\cdot\mathbf b=\|\mathbf a\|\|\mathbf b\|\cos\theta$

where $\|\mathbf x\|$ denotes the norm of a vector $\mathbf x$ , and $\theta$ is the angle between the two vectors.

So if $\mathbf a=(2,3)$ and $\mathbf b=(4,2)$ , then

$(2,3)\cdot(4,2)=\|(2,3)\|\|(4,2)\|\cos\theta$

$\implies2\cdot4+3\cdot2=\sqrt{2^2+3^2}\sqrt{4^2+2^2}\cos\theta$

$\implies\cos\theta=\dfrac{14}{\sqrt{13}\sqrt{20}}$

$\implies\theta\approx29.7^\circ$

6 0

3 years ago

Right an essay about 250-200 words about water

lapo4ka [179]

Answer:250-200l Water

Explanation:

8 0

3 years ago

Read 2 more answers

John stirs the hot soup with a spoon the heat travels up the spoon to his hand by what process does the heat travel up the spoon

Gemiola [76]

Answer: is Second Law of Thermodynamics (conduction).

john stirs the hot soup with a spoon the heat travels up the spoon to his hand is due to the basic law of conduction, also known as the second law of thermodynamics . Heat always travels from hot things toward the cold things, is proved by the phenomena that a cup of tea always get cold, and and a cold dessert or ice cream always melts. Its not possible that the cup of tea become boiling by itself and similarly an ice cream getting frozen on its own in on a hot day. To understand this point there are three ways in which heat can travel namely, conduction, radiation and convection. The process due to heat travels up to the spoon from the soup towards john's hand is called conduction. Conduction is the process in which heat travels between two solid things that are at different temperature. Cooking soup in a saucepan with a metal spoon will make your fingers hot because of the conduction of heat, that travels through the boiling soup pan through metal spoon towards your hand.

6 0

3 years ago