PHYSICS HIGH SCHOOL

A tropical storm turns into a hurricane when wind speeds reach?

Answers

Answer 1
Answer: A tropical storm turns into a hurricane when wind speeds reach more than 33 knots. It happens when the tropical depression strengthens and then the speed of the wind starts increasing and reaches a stage when it is called a hurricane. Right type of condition can create a powerful hurricane, but when the right conditions are not there, then the storm fizzles out. 
Answer 2
Answer:

Answer:

74mph

Explanation:

the internet

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Potassium hydroxide (KOH) and hydrochloric acid (HCl) react in a beaker. They form potassium chloride (KCl) and water (H2O). What type of reaction is this?

Answers

Potassium hydroxide (KOH) and hydrochloric acid (HCl) react in a beaker. They form potassium chloride (KCl) and water (H2O). This type of reaction is a double replacement reaction wherein the two principal reactants exchange after the reaction. The Cl will combine to the K forming KCl and the H will add to the OH forming H2O.

Answer:

B double replacement reaction

Explanation:

took the test

Least common shape for a galaxy is

Answers

The least common shape for a galaxy is cluster.Galaxy, by definition, is an arrangement composing of stars, planets, gassesand everything more that can be seen in the space. There are three types ofgalaxies and they are elliptical, spiral and irregular. Spherical could beapplicable as elliptical if you got to choose only one on the choices above. Exampleof spiral galaxy is the Milky Way galaxy where our Solar system is currentlylocated according to the scientists. 

Answer:

cluster

Explanation:

What force keeps a water spider on the surface of water

Answers

i think it's surface tension force

Which describes the changes in visible light moving from red to violet?

Answers


As you move from red to violet, the wavelength of the light waves
gets shorter, and the frequency gets higher.  Also, each photon
carries more energy as you move in that direction.  One photon
of violet light carries roughly twice as much energy as one photon
of red light does.

A box contains 9 new light bulbs and 6 used light bulbs. Each light bulb is the same size and shape. Meredith will randomly select 2 light bulbs from the box without replacement. What is the probability Meredith will select a new light bulb and then a used light bulb

Answers

Answer:

(9/35) = 0.257

Explanation:

Box contains 9 new light bulbs and 6 used light bulbs, total number of bulbs = 15.

Probability of selecting two bulbs; a new light bulb and then, a used light bulb in that order = [(probability of selecting a new bulb) × (probability of selecting a used bulb from the rest)] = [(9/15) × (6/14)] = (9/35) = 0.257

Final answer:

The probability that Meredith will select a new bulb and then a used bulb in sequential order without replacement is around 26%.

Explanation:

The question asks about the probability of selecting a new light bulb and then a used light bulb from a box containing 9 new light bulbs and 6 used light bulbs. Probability events like these are solved using multiplication rules of probability that each event is independent.

First, the probability of picking a new bulb is 9/15 (total bulbs are 15). If you pick one out, you don't replace it, so there are only 14 bulbs left. Thus, the probability of picking a used bulb now is 6/14. Hence the probability of both events happening in order is the multiplication of both, i.e., (9/15)*(6/14) = 54/210 = 0.257 or around 26%.

Learn more about Probability here:

brainly.com/question/32117953

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Electrons in excited hydrogen atoms are in then = 3 energy level. How many different photon
frequencies could be emitted as the atoms return
to the ground state?
(1) 1 (3) 3
(2) 2 (4) 4

Answers

I can see three different transitions here:

3 --> 1

3 --> 2
followed by
2 --> 1 .

So we should expect to see three different 'colors'
being emitted from this excited mob.
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