PHYSICS HIGH SCHOOL

A projectile was launched horizontally with a velocity of 468 m/s, 1.86 m above the ground. Calculate how long it would take for the projectile to hit the ground, to the nearest tenth of a second. Record your answer in the boxes below. Be sure to use the correct place value.

Answers

Answer 1

Answer:

Answer:

0.6 seconds

Explanation:

The time to fall from height h is ...

t = √(2h/g)

t = √(2(1.86 m)/(9.8 m/s^2)) ≈ √0.3796 s ≈ 0.616 s

It would take about 0.6 seconds for the projectile to hit the ground.

Answer 2

Answer:

Answer:

0.6seconds

isuranswer:)

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Can someone help with number 4 please

A car moves at 12 m/s for 30.0 seconds. It then accelerates at 1.5 m/s2 for 8.00 seconds. Finally, it continues on at this top speed for another 12.0 seconds. Calculate the net
displacement during the whole time interval.

Answers

Over the first 30.0 s, the undergoes a displacement of

(12 m/s) * (30.0 s) = 360 m

Over the next 8.00 s, the car accelerates from 12 m/s to a top speed of

12 m/s + (1.5 m/s²) * (8.00 s) = 24 m/s

and over this time interval, it is displaced an additional

(12 m/s) * (8.00 s) + 1/2 (1.5 m/s²) * (8.00 s)² = 144 m

For the last 12.0 s, the car moves at a constant speed of 24 m/s to cover a distance of

(24 m/s) * (12.0 s) = 288 m

So the car's net displacement is 360 m + 144 m + 288 m = 792 m. (The net displacement is the same as distance in this case because the car moves in only one direction.)

How many hydrogen atoms are found in two molecules of hydroxylamine, 2NH2OH?

Answers

Answer:

There are 6 Hydrogen atoms present in two molecules of Hydroxylamine.

Explanation:

Hydroxylamine is an inorganic compound having formula : NH₂OH

In one molecule of Hydroxylamine, NH₂OH there are 3 atoms of Hydrogen.

NH₂OH: 2+1 = 3

So two molecules of Hydroxylamine would contain 2 × 3 = 6 atoms of Hydrogen.

2 NH₂OH : (2×2)+(2×1) = 6

It would be six because in every one molecule, there are three atoms of hydrogen, so just double that and you have six.

What are two ways in which all types of precipitation are alike

Answers

The two ways in which all types of precipitation are alike they all come from the clouds,they are all formed by precipitation.

What is precipitation ?

Any liquid or frozen water that condenses in the atmosphere and falls to the ground is known as precipitation. Rain, sleet, and snow are only a few of its various manifestations. Precipitation is one of the three main processes that make up the global water cycle, together with evaporation and condensation.

Rain, sleet, and snow are only a few of its various manifestations. Precipitation is one of the three main processes that make up the global water cycle, together with evaporation and condensation. Water vapour in the clouds condenses into increasing-sized droplets of water, forming precipitation.

The most common forms of precipitation that come from cloud-borne particles are rain, snow, freezing rain, and sleet. The changes in temperature are the primary distinction between these various types of precipitation.

Thus, The two ways in which all types of precipitation are alike they all come from the clouds,they are all formed by precipitation.

To learn more about the precipitation, follow the link;

brainly.com/question/18109776

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1. they all come from the clouds 2.they are all formed by precipatation. hope this helps enjoyyyyyy!!!!!!!!!!!!!

A scientific model is based on assumptions that limit where and how the model can be applied. True False

Answers

Answer:

i think it is true

Explanation:

If electron e3 wants to drop down an energy level (from n=5 to n=4), what must it do?

Answers

Answer: Electron e3 must emit a photon of light in order to drop down from the n=5 to the n=4 energy level.

Explanation:

When an electron drops from a higher energy level to a lower energy level, it releases energy. This energy is emitted in the form of a photon, which is a particle of light. The wavelength of the photon is determined by the difference in energy between the two energy levels.

In this case, the electron is dropping from the n=5 energy level to the n=4 energy level. The difference in energy between these two levels is 2.18 eV. So, the photon that is emitted will have a wavelength of 121.6 nanometers.

The emission of a photon by an electron is a quantum mechanical process. This means that it cannot be predicted exactly when the electron will emit the photon. However, it is possible to calculate the probability of the electron emitting the photon at a given time.

The probability of the electron emitting the photon is greatest when the electron is in the n=5 energy level. As the electron falls to the n=4 energy level, the probability of emitting the photon decreases.

The emission of a photon by an electron can be used to study the structure of atoms and molecules. It can also be used to generate light of a specific wavelength, which is useful in a variety of applications, such as lasers and spectroscopy.

A flashlight has a resistance of 2.4 what voltage is applied by the batteries if the current in the circuit is 2.5 a?