Define the difference between an independent variable (test variable) and a dependent variable (outcome variable) in a scientific experiment.
Answer:
Independent- isn't effected by the other variables and is changeable
dependent- is the outcome of the expirment and depends on the other variables
Answer:
a factor that changes due to the independent variable
Explanation:
A gas has a pressure of 150 kPa at a volume of 6 m3. Calculate the volume of the same mass of gas at a pressure of 425 kPa
Answer:
V2 = 2.12 m³
Explanation:
Given the following data;
Original pressure, P1 = 150 kPa
New pressure, P2 = 425 kPa
Original volume, V1 = 6 m³
To find the new volume V2, we would use Boyles' law.
Boyles states that when the temperature of an ideal gas is kept constant, the pressure of the gas is inversely proportional to the volume occupied by the gas.
Mathematically, Boyles law is given by;
[tex] PV = K[/tex]
[tex] P_{1}V_{1} = P_{2}V_{2} [/tex]
Substituting into the equation, we have;
[tex] 150 * 6 = 425V_{2} [/tex]
[tex] 900 = 425V_{2} [/tex]
[tex] 900 = 425V_{2} [/tex]
[tex] V_{2} = \frac {900}{425}[/tex]
[tex] V_{2} = 2.12[/tex]
Therefore, the new volume of the mass of gas is 2.12 cubic metre.
WILL MARK BRAINLIEST
TRUE or FALSE?If you are an astronaut slowly drifting away from the space station, you might be able to drift back to the station by throwing a 5-kg tool rapidly in the direction that you are traveling (away from the station).
Answer:
yes every action as an equal and and opposite reaction. if you throw a tool then it will give you a reaction and you will move back.
Explanation:
According to Newton's third law of motion, when two bodies interact between them, appear equal forces and opposite senses in each of them.
To understand it better:
Each time a body or object exerts a force on a second body or object, it (the second body) will exert a force of equal magnitude but in the opposite direction on the first.
So, if you as an astronaut in the described situation throw your tool in the direction that you are traveling (in the opposite direction of the space station), according to Newton's third law, you will be automatically moving towards the station
The interval shown here represents a _____.
strong base
weak base
weak acid
strong acid
Answer:
Strong acid
Explanation:
.... ..............
If a galaxy is located 200 million light years from Earth, what can you conclude about
the light from that galaxy?
A. The light will travel a total of 200 million kilometers to reach Earth.
B. The light will travel 200 million kilometers per second to reach Earth.
C. The light will travel a total of 300,000 kilometers to reach Earth.
D. The light will take 200 million years to reach Earth.
please help :(
Answer:
D
Explanation:
It's quite simple actually, you see, what light years basically means is how many years light takes to travel from point a to point b. So here it says that a galaxy is 200 million light years away. So since that light is 200 million years away, it would take 200 million years until that light reaches us.
3
The ion of an element has 3 positive charges. Mass Number of
I Neutrons is ly. What is the of electrons in the song.
Answer:
3 electron hai bro of puch mujhe sab aata h
A force of 600N is used to slide a sled across a floor 20 meters . The rope pulling the sled is held at 35 * . How much work does the force do?
Answer:
9830 J
Explanation:
(Just a tip, you should use the degree symbol ° instead of *)
That being said we know W = F*d*cos(θ). In this case θ = 35°.
W = F*d*cos(θ) = 600*20*cos(35)
= 12000*cos(35)
= 9829.925 Joules
Solution: Work ≈ 9830 J
Which shows increasing entropy?
mowing a lawn
folding clothes
falling leaves
washing dishes
Answer:
mowing a lawn
Explanation:
Entropy is the degree of disorderliness of a system. As a body moves from a more ordered state to a less ordered one, the entropy of the system increases.
Mowing a lawn is a typical example of increasing entropy. When a lawn is being mowed, the grasses becomes disordered without any fixed orientation. Folding a clothe is trying to bring orderliness to the clothe patterning. Washing dishes will make one arrange them in an ordered way. Falling leaves brings leaves together.Answer:
Falling leaves!
Explanation:
I got it right on EDGE2021. ^^ Hope it helps!~ Remember, I'm proud of you. <3
What is the force on an object of mass 55 kg that is accelerating at 24 m/s2
Answer:
1320 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 55 × 24
We have the final answer as
1320 NHope this helps you
Food that is cooked properly can no longer be contained. True or false
Answer:
true they can no longer be contained
What is the difference between epicenter and focus?
Answer:
The hypocenter is the point within the earth where an earthquake rupture starts. The epicenter is the point directly above it at the surface of the Earth. Also commonly termed the focus.
Explanation:
find momentum, when mass = 20kg and velocity = 5 m/ sec ?
Answer:
the momentum is 100 bas p=mv
How is the 3rd law different from the 1st and 2nd laws?
Answer:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
The more conductive an object is, the easier it is for neutrons to go through the object.
True
False
Answer:
false bcz neutrons do not move they r fixed in nucleus so it will. Fallse
The Electron Cloud Model shows shaded regions of probabilty where the electons most likely are at a given point in time. True False
Answer:
True
Explanation:
The statement is true because According to Schrödinger it's not possible to get the exact position of where an electron is located. However, he showed from an equation that we can at determine the most likely area where an electron will be and he said they are most likely to be in the most dense area of the clouds.
Answer:
it is true
Explanation:
WILL MARK BRAINLIEST!
TRUE or FALSE? When a large truck pushes a small car with a given force, the small car is applying an equal and opposite force on the truck.
Answer:
True
Explanation:
Newton's first law of motion states that an object at rest will stay at rest unless acted upon by an outside force.
Answer:
When a large truck pushes a small car with a given force, the small car is applying an equal and opposite force on the truck. Newton's first law of motion states that an object at rest will stay at rest unless acted upon by an outside force.
Explanation:
so its true
How do fossils provide evidence of continental drift?
A. Similar fossils are found all over the world.
B. The same fossils were found on land and under the ocean.
C. The same fossils were found on different continents.
D. The fossils show a record of climate change.
what is the significance of the similar number and arrangement of bones in human arm and a bat wing
A 20N bucket is accelerated upward out of a well, by a rope with a force of 75N. What is the acceleration of the bucket
Answer:
36.76m/s²Explanation:
Given
Weight of the bucket = 20N
Mass = Weight/acceleration due to gravity
Mass = 20/9.8
Mass = 2.04kg
Applied force = 75N
Get the acceleration
According to Newton's second law:
F = ma
a = F/m
a = 75/2.04
a = 36.76m/s²
Hence the acceleration of the bucket is 36.76m/s²
What factors affect the amount of potential energy an object has?
Answer:
The factors that affect an object's gravitational potential energy are its height relative to some reference point, its mass, and the strength of the gravitational field it is in.
Explanation:
The factors that affect the amount of potential energy an object has are its mass, gravity, and height. This is further explained below.
What is potential energy?Generally, potential energy is simply defined as the energy held by a body as a result of its location with relation to others, internal tensions, electric charge, and other elements
In conclusion, The potential energy of a body is given by P.E=mgh
Read more about Energy
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A bird flying towards its nest has a mass of 0.25kg and a kinetic energy of 40.5J. What is the speed of the bird?
2 / 3
133%
Choose the correct answer for the following sentences and give the
reason for your answer.(10 marks)
(i) The product of power into focal length for a lens is equal to
(ii)
(a) One (b) ten
(c) one hundred
The human eye has a lens of focal length +5 cm. The power of the
eye is
(a) 0.05 D
(b) 5 D
(c) 20 D
A transparent rod in which successive total internal reflection can
occur is called
(a) A light pipe (b) a thin prism (c) total internal
reflection
The wavelength of visible light is between
(a) 400 nm to 700 nm (b) 40 km and 70 km (c) 20 mm to 200
(iv)
mm
(v)
The SI unit for wave intensity is
(a) Js
(b) Wm?
-1
(c) Wmk1
Answer:
Explanation:
Need answer ASAP!!!
Will give the brainliest for the correct answer!!!
What is the current of a circuit it the resistance is 20 ohms and the voltage is 100 V?
Hello!
Use ohm law:
I = V / R
Replacing:
I = 100 V / 20 O
I = 5 A
The current is 5 amperes.
A wave has a frequency of 900 Hz and a wavelength of 200 m. At what speed is this wave traveling?
Answer:
The velocity of the wave is, v = 180,000 m/s
Explanation:
Given data,
The frequency of the wave, f = 900 Hz
The wavelength of the wave, λ = 200 m
The formula for the speed of the wave when the frequency and wavelength are known,
v = λ x f
Substituting the given values in the above equation,
v = 200 m x 900 Hz
v = 180000 m/s
Hence, the velocity of the wave is, v = 180,000 m/s
A compact car moving at 60 m/s has 320,000 J of kinetic energy. What is its mass?
Answer:
320,000J
Explanation:
mass=320,000J
which statement best describes a chemical reaction?
Answer:
a chemical reaction is a reaction that happens between two objects, like fire and a potion in chemistry
Explanation:
the reason is that the the fire causes the chemical to react, making a chemical reaction
if F = -F represents Newton's third law, then "-F" represents the ________
a. opposite
b. leading
Answer:
opposite .
Explanation:
Answer: The answer is a) opposite
Explanation: I just completed the USA Test Prep and got a 100! :))
newton's first law equations like velocity and stuff like that
Answer:
Newton's first law: An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force. ... An object sliding across a table or floor slows down due to the net force of friction acting on the object.
Explanation:
please give me a heart
What is the acceleration of a 7 kg mass if the force of 70 N is used to move it toward the Earth?
Answer:
10 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
m is the mass
f is the force
From the question we have
[tex]a = \frac{70}{7} = 10 \\ [/tex]
We have the final answer as
10 m/s²Hope this helps you
A force off 700 newtons is applied to a 600 kg bowling ball. What is the acceleration of the bowling ball once the force is applied?
Answer:
1.17 m/s²Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
[tex]a = \frac{f}{m} \\ [/tex]
f is the force
m is the mass
From the question we have
[tex]a = \frac{700}{600} = \frac{7}{6} \\ = 1.1666666...[/tex]
We have the final answer as
1.17 m/s²Hope this helps you