What would happen if a rocket ran out of fuel in the Earth's atmosphere?

Answers

Answer 1

Answer: It would do exactly what a rock or a frisbee does when you toss it.

After the engines cut off, it couldn't get any more energy from
anywhere, and after that, as it pushed air aside to get through,
and had air molecules scraping against it, those would slowly
rob kinetic energy from it. Sooner or later it would run out of
kinetic energy, start falling, and it would eventually make either
a big 'SPLOOSH' or else a big 'CRUNCH', depending on exactly
where it returned to Earth's surface.

Answer 2

Answer: The rocket would fall back down to the surface of earth because there would be nothing propelling it upwards.

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Are mushrooms, producers, consumers, or decomposers?

Answers

The answer is mushrooms are considered to be decomposers. Mushrooms are considered to be a fungi, which means that they create their own food by decomposing organisms, they also absorb nutrients from the organism they absorb. Mushrooms releases enzymes for them to be able to decompose and absorb nutrients from an organism.

Mushrooms are decomposers.

Explanation:

Mushrooms are also known as fungi. Fungi breaks down nutrients from dead animals, rotting food, or decaying plants. Fungi are natural heterotrophic organisms meaning they are incapable of photosynthesis, they cannot grow on their own like plants. They get nutrients from dead animals, rotting food, or decaying plants.

Example 1:

Think about it, bees produce honey as a main source meaning they are producers. Mushroomsdo not have any sort of ability to do so.

Example 2:

Mushrooms might consume nutrients and such but they are not like dragonflies that are big eaters and consume butterflies and bees.

The final explanation, mushrooms are decomposers.

Hope this helps!

~Hocus Pocus

A man is riding his 4-wheeler at 60 km/hr. If he is riding it constantly at this rate for 1.5 hours, how far did he ride?

Answers

Answer:

90 km/h

Explanation:

60 x 1.5

Answer:

i beileve the answer is A

Explanation:

The initial kinetic energy imparted to a 0.020 kg bullet is 1200 J. (a) Assuming it accelerated down a 1.00 m rifle barrel, estimate the average power delivered to it during
the firing. (b) Neglecting air resistance, find the range of this projectile when it is fired
at an angle such that the range equals the maximum height attained.

Answers

Answer:

(a) Power= 207.97 kW

(b) Range= 5768.6 meter

Explanation:

Given,

Mass of bullet, $m=0.02 kg$

Kinetic energy imparted, $K=1200 J$

Length of rifle barrel, $d=1 m$

(a)

Let the speed of bullet when it leaves the barrel is $v$ .

Kinetic energy, $K=(1)/(2) mv^(2)$

$v=\sqrt{(2K)/(m) }$

$=\sqrt{(2*1200)/(0.02) }$

$=346.4m/s$

Initial speed of bullet, $u=0$

The average speed in the barrel, $v_a_v_g=(u+v)/(2)$

$=(0+346.4)/(2) \n=173.2 m/s$

Time taken by bullet to cross the barrel, $t=(d)/(v)$

$=(1)/(173.2)\n =0.00577 second$

Power, $P_a_v_g=(W)/(t)$

$=(1200)/(0.00577) \n=207.97kW$

(b)

In projectile motion,

Maximum height, $H_m=(v^2\sin^2\theta)/(2g) \n$

Range, $R=(v^2\sin2\theta)/(g)$

given that, $H_m=R$

then, $(v^2\sin^2\theta)/(2g)=(v^2\sin2\theta)/(g)\n\sin^2\theta=2\sin\theta\cos\theta\n\n\tan\theta=4\n\theta=\tan^-^14\n\theta=75.96^0\nR=(v^2\sin2\theta)/(g)\n=(346.4^2*\sin(2*75.96))/(9.8)\n5768.6 meter$

What can you put on metal letters to protect them from acid rain?

Answers

Paint helps to prevent damage caused by acid rain.

When using the right-hand rule to determine the direction of the magnetic field around a current-carrying wire, which part of theright hand points in the direction of the magnetic field?

-palm
-fingers
-back
-thumb

Answers

Answer: Palm

Explanation: When you have a wire, you must point your thumb in the direction in which the electricity is going, and now you close your palm, in the direction in which you closed your hand is in the direction in which points the magnetic field.

Then the correct option is the first one, the palm points in the direction of the magnetic field.

Answer:

Fingers

Explanation:

The index finger shows the moving charge, while your middle finger shows the magnetic field line.

99pts. I can't find isotope, pottasium-15 or k-15. Is this even possible, I have a fill-in-the-blanks worksheet with a table like example:Element Name: Nitrogen-20 Symbol: N-20 Atomic Number: 7 Atomic Mass: 20 Charge: 0 Protons: 7 Neutrons: 13 Electrons: 7

I remember finding the isotope number, Nitrogen-20 by adding the Protons and Neutrons, then I get a new atomic mass. But on here Pottasium-15 is confusing! What neutrons do I add from 19 protons to get 15? Sometimes the teacher throws in impossible problems.

Answers

Yes, that's what [s]he has done this time.

First of all, the number of protons in every atom of an element
is the same. That's the "Atomic number" of the element. If
somehow the nucleus of the atom gained or lost a proton, then
that would change the Atomic number of the atom, and it would
be an atom of a different element.

Potassium is element #19. Every atom of Potassium has 19 protons
in its nucleus. Any atom that has 19 protons in its nucleus is an atom
of Potassium, and any atom that has more or less than 19 protons in
its nucleus is an atom of some other element, not Potassium.

In addition to protons, atoms also have some neutrons in the
nucleus. Neutrons have no charge, so they don't change the
atomic number of the atom. But they have mass ... almost the
same as the mass of a proton ... so the neutrons add to the atom's
"atomic weight". The atomic weight of an atom is

(number of protons) plus (number of neutrons).

The numbers you see next to the names are the atomic weights.
Notice that the atomic weight of an atom of Potassium can't be
less than 19 ... in order for it to be Potassium in the first place,
it has 19 protons, so its atomic weight would be 19 even if it had
no neutrons at all.

There can be no such thing as an atom of Potassium-15.

Atoms of the same element can have different numbers of
neutrons in their nucleii. Those are called "isotopes" of the
element.

There are three isotopes of Potassium that occur in nature ...
atoms with 19 protons plus 20, 21, or 22 neutrons. So the
atomic weight of any naturally occurring atom of Potassium
is either 39, 40, or 41. If you ever see a big chart that lists
natural isotopes of the elements, then in slot-#19, you'll see
Potassium-39, Potassium-40, and Potassium-41.

I hope my explanation is good enough for 50 points.

super super late ans but im up late n looking 4 interesting Qs...

Potassium-15 is confusing indeed! What neutrons can one add to a nucleus with 19 protons to get a mass of 15? anti-matter cannot do it as scientists have generally agreed that anti-matter has the same mass as regular matter but with an opposite spin.

the ans actually doesnt exist when the Q was originally asked but in 2017, Washington State University physicists created a fluid with negative mass. so theoretically a "negative neutron" will have a mass of -1. combining 4 of such exotic particles to 19 protons will create K-15; assuming there is no explosion from the combination.

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