Answers
The first choice on the list is the correct one.
Related Questions
When a warm air mass and cold air mass come together, like a warm front and cold front, a typical outcome is rain. What explains why rain forms in this situation?
A. The cold air causes the moisture in the warm air to condense and precipitate as rain.
B. The cold air is moving faster than the warm air, which causes rain.
C. Because the cold air is denser, it causes rain.
D. The two air masses neutralize each other, which results in clouds that produce rain.
Answers
Answer:
A,when the two air masses meet,the cold air cools the block if warm air,causing it to condense and form stratus clouds( blankets of blank clouds that form when air rises slowly e.g. a warm air mass meets a cold one). Eventually when the cloud becomes saturated precipitation falls from them(precipitation is moisture in any form that falls from the atmosphere).
A boat travels at 30 mph for a huge, solid cliff that is about 3,000 meters away. When the horn on the boat makes a toot, you can hear the initial sound directly from the horn and also an echo from the cliff wall some time later. How does the frequency of the echo compare with the frequency of the horn before the ship moved?
Group of answer choices
The frequency of the echo is slightly increased.
The frequency of the echo is slightly decreased.
The frequency is unchanged.
Not enough information to determine.
Answers
Answer:The frequency of the echo is slightly decreased
Explanation:
Given
speed of boat [tex]=30\ mph[/tex]
cliff is [tex]3000\ m[/tex] away
when boat is still , suppose t is the time taken by the echo to reach observer on the boat
But as soon as boat starts moving the distance between cliff and boat decreasing and time for echo to reach observer also decreases
and we know [tex]time \propto \frac{1}{frequency}[/tex]
therefore frequency of the echo slightly decreased.
A 1200 kg car accelerates from 13m/s to 17m/s. find the change in momentum of the car?
Answers
Answer:
4800
Explanation:
The change in velocity of the car is 17-13=4m/s. Since the change in momentum is the mass multiplied by the change in velocity, the answer is 4*1200=4800. Hope this helps!
Given:
Mass,
m = 1200 kgChange in velocity,
Δv = 17-13= 4 m/s
Now,
The change in momentum is:
= [tex]Mass\times Change \ in \ velocity[/tex]
= [tex]1200\times 4[/tex]
= [tex]4800[/tex]
Thus the above answer is correct.
Learn more about momentum here:
https://brainly.com/question/8644950
How do most fossils form? Be sure to explain your
answer
I
Intro
Answers
Here your answer
Fossils are formed in a number of different ways, but most are formed when a plant or animal dies in a watery environment and is buried in mud and silt. Soft tissues quickly decompose leaving the hard bones or shells behind. Over time sediment builds over the top and hardens into rock.
hope it helps ☺️✌️
Answer:
over years of being underground the pressure causes the organism to press into the rock and form a mold. this mold is the fossil and are found in sedimentary rock
What is motion ,terms used to measure motion ,examples etc
Answers
Answer:
A physic term
Explanation:
Answer:
Cambio de lugar o de posición de un cuerpo en el espacio.
Explanation:
Each gas sample has the same temperature and pressure. which sample occupies the greatest volume? each gas sample has the same temperature and pressure. which sample occupies the greatest volume? 40.0 gar 20.0 gne 20.0 gh2 4.0 ghe
Answers
Answer:
20 gram of H as the greastest volume
Explanation:
Each gas sample has the same temperature and pressure. which sample occupies the greatest volume? each gas sample has the same temperature and pressure. which sample occupies the greatest volume? 40.0 gar 20.0 gne 20.0 gh2 4.0 ghe
Given that,
40.0 g of Ar
20.0 g of Ne
20.0 g of h
24.0 g of he
The ideal gas equation ; Pv = nRT
where P is the pressure, V is the volume, R is the gas constant, T is the temperature, n is the number of mole
which is equal to
n = m / M
where m is the given mass
M is the molar mass
The given gas sample are at the same temperature and pressure,
So, the temperature, pressure and gas constant are fixed.
Therefore the volume is proportional to the given mass and molar mass
V ∝ m/M
Substitute the given mass and molar mass of given masses for comparison
No of mole of Ar = mass / molar mass
= 40 / 40 = 1 mole
No of mole of Ne = mass / molar mass
= 20 / 20 = 1 mole
No of mole of h = mass / molar mass
= 20 / 1 = 20 mole
No of mole of he = mass / molar mass
= 24 / 4 = 6 mole
Hence, 20 gram of H as the greastest volume
please answer I'll give brainlist
Assuming the sound wave moves with the speed of air ( 340 m/s), what is the wavelength of the wave?
Answers
Answer:
suppose frequency of sound = 100Hz
then wavelength = speed/ frequency
= 340/100= 3.4 m
When you have two materials with the same index of refraction, it means that
Answers
Answer:
When you have two materials with the same index of refraction, it means that if they are touched by a ray of light it won't have a chance, and its form would prevail.
Explanation:
The reason behind this is that in the first place. When light passes through an object of certain refraction it is modified from its natural state, allowing it to change in color to the human eye or many other effects in other perceptive elements. However, when the same light passes through two objects with the same refraction due to their physical characteristics, it doesn't change because once it comes out of the first one it will suffer the same effect from the last one. For it to change the refraction would have to be higher or lower. Then it would be modified. The reason is because the dimensions are not modified. Because at some point the ray of light has to come out of the first one to enter the second one.
Which of the following results was evidence that the proton was part of an atom's nucleus?
A). The alpha particles passed straight through the foil.
B). A few hits of alpha particles were noticed on the sides of the film.
C). The alpha particles stayed stuck to the gold foil.
D). The alpha particles shot at the gold foil straight back off the foil and stuck the front side of the film.
Answers
Answer: The answer should be
A). The alpha particles passed straight through the foil.
Answer:
D
Explanation:
whoever answers correctly first will get brainiest
whats my middle name....?
clues:
a_n_l i_ e
3 missing letters
fill in the blanks! hehe
Answers
Answer:
annalise
Explanation:
::::::::::)))))))))
A circuit has a current of 3 A. How many coulombs of charge will pass by a point in the circuit in 2 seconds?
- 6C
- 5C
- 3/2 C
- 2/3 C
One of these are the answer..
Answers
6C
Explanation:
The quantity of charge, Q, passing through an electric circuit is dependent on the electric current, I, and the time taken, t, for the current to flow. It is given mathematically as follows
Q = I x t ------------------------------(i)
Where;
I is measured in Amperes(A)
t is measured in seconds (s)
Q is measure in coulombs (C)
From the question,
I = 3A
t = 2s
Substitute these values into equation (i) as follows;
Q = 3 x 2
Q = 6C
Therefore, the number of coulombs of charge that will pass is 6C
The passage helps the reader to draw conclusions about which character's perspective? ºAlec ºAlice ºAlec's father ºAlec's mother
Answers
Answer:
I think it might be A: Alec but tell me if I'm wrong
Explanation:
Answer:
a
Explanation:
i did it on e d g e n u i t y
If a magnet is cut into unequal size pieces, how many north and south poles will each of the pieces have?
Answers
Answer:
Each of the pieces will have one north pole and one south pole.
Explanation:
A magnet is made up two ends, one end is known as north pole while the other end is known as south pole.
When a magnet is cut into unequal size pieces, each of the piece will have two ends, one end of each piece is known as north pole while the other end will be south pole.
Therefore, each of the pieces will have one north pole and one south pole.
what is a Rube Goldberg machine and show me a pic? PLEASE.
Answers
Answer:
This picture is just one example of a Rube Goldberg machine. It's sort of like a chain reaction. There are a lot of cool videos you could look up on you tube that demonstrate what they are.
Explanation:
Hydrogen is a nonmetal with many nonmetal properties. Why is it on the periodic table with the metals in Group 1?
Answers
Answer:
This is because it has ns1 electron configuration like the alkali metals.
Pls Mark Brainiest, am trying to become Virtuoso
What are the pros and cons of hydro electricity
Answers
You get yourself a new mirror so that you can admire yourself in the morning. When you open the box, you notice that it is only ½ your height. You think to yourself "This is no good! Now I can't see all of me!" You put it up anyway and realize that you can see your entire body in it. How can this be?
Answers
Answer:
Because you stand at a distance from the mirror at which your entire body shows.
Explanation:
Since the mirror is a plain mirror, the distance of the object from the mirror is also the distance of the image from the mirror. Also since the magnification is 1 for a plane mirror because the height of the image equals the height of the object. Since the magnification always equals 1, for you to be able to see your entire body, you must stand at a distance from the mirror such that your height equals the image height.
Answer: By keeping a distance away from the mirror.
Explanation:
If it's a plane mirror, it's possible to see your entire body by keeping distance away from the mirror. The distance of the object away from the mirror is equal to the distance of the image away from the mirror.
How are the electric field lines around a positive charge affected when a second positive charge is near it?
Answers
Answer:Because it likes to repel and attract opposites
a bicyclist rides with a constant speed of 7 m/s. What is his initial speed?
Answers
Answer:
initial speed of the bicker = 7m/s
a 50 kg aardvark runs with a speed of 6 m/s. what is the kinetic energy of the aardvark
Answers
Answer:
900 J
Explanation:
0.5 x 50= 25 x 6^2= 900 J
