Answer:
sorry I don't know the answer for this question
15. Starting from rest, an object rolls freely down an incline that is 10 m long in 2 s. The acceleration of the
object is approximately?
Answer:
a = 5m/s^2
Explanation:
Vi=0 m/s
ΔY=10m
Δt=2s
find acceleration
With the givens and the acceleration being the only one missing, we can safely use the Δy = Vi Δt + 1/2 a (Δt)^2 formula
Plug it in and we get:
10 = 0 x 2 + 1/2 a (2)^2
10 = a2
10/2 = a 2/2
a = 5 m/s^2
I hope this helps :)
What causes the amount of gravitational force to change?
Answer:
Mass and Distance
Explanation:
mass and distance affect the strength of gravitational force on an object.
1. Define weight
2. How is the weight of an object related to its mass?
3. If an object has a mass of 50 kg, what is its weight?
4. An object is accelerating when it a speeds up b. slows down c changes direction d any of the above
5. Newton's second law of motion relates an object's acceleration to aits mass b. ils velocity c. the net force acting on it d. a and
6. Doubling the net force acting on an object a doubles its acceleration C. cuts its acceleration in half. b. decreases it acceleration d does not affect its acceleration
7. If the mass of an object doubles, its weight a. doubles b. decreases. c. is not affected. d changes by a factor of
8.If you know the mass of an object, you can calculate its weight with the formula a F-m XV b. a = Fim c. F = m X 9.8 m/s22 d. d = v X 9. Which units can be used to express force? a. N b. kg/s2 c. kgm/s2 d. a ando
10. If you push a 20-kilogram mass with a force of 40 N, what will be the object's acceleration? a 40 m/s2 b. 20 m/s2 c. 10 m/s2 d 2 m/s2
1. Weight is the gravitational pull with which the earth attracts the body towards the center of the earth. The S.I unit is Newton (N)
2. The weight of an object is related to its mass with the below equation.
W = mg
Where W = weight, m = mass and g = acceleration due to gravity
3. The mass m = 50 kg and g = 9.8 m/[tex]s^{2}[/tex]
Substitute the parameters in the equation above.
W = 50 x 9.8
W = 490 N
4. An object is accelerating when it speeds up. If the object slows down, it means it is decelerating. The correct answer is option A
5. Newton's second law of motion is:
F = ma
Where F = force applied, m = mass and a = acceleration
Therefore, Newton's second law of motion relates an object's acceleration to its net force acting on it. The correct answer is option C
6. According to Newton's second law of motion which relates an object's acceleration to its mass, doubling the net force acting on an object a doubles its acceleration. Because mass is always constant.
7. Since the weight of an object is related to its mass with the equation.
W = mg, If the mass of an object doubles, its weight will also doubles. Option A is the correct answer.
8. If you know the mass of an object, you can calculate its weight with the formula F = mX when X = 9.8m/[tex]s^{2}[/tex]
9. Force is expressed in unit as Newton (N)
10. The parameters given are :
mass m = 20kg
Force F = 40N
To calculate acceleration, use the formula F = ma
Substitute all the parameters into the equation.
40 = 20a
a = 40/20
a = 2m/[tex]s^{2}[/tex]
The correct option is D
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Which option is a key point of cell theory?
the answers are
1. Cells are the basic structural unit of all living organisms.
2. Some cells can burn food molecules to release energy, but some cannot.
3. Cells can repair neighboring cells, but not themselves.
4. All cells that make up an organism are similar to each other.
helppppppp I am doing a quiz
Answer:
1.Cells are the basic structural unit of all living organisms.
Answer:
It has three main parts:
1. All living things are made up of cells.
2. Cells are the basic building blocks of life.
3. All cells come from preexisting cells created through the process of cell division.
Explanation:
As science evolved, three more components were added to the theory. Some biology classes don’t require you to know these parts of the cell theory because they weren’t part of the original definition, but it’s still useful to be aware of them:
4. Energy flow occurs within cells.
5. Hereditary information is passed from cell to cell.
6. All cells have the same basic chemical composition.
So what does the cell theory actually mean? Let’s break it down. The first part of the cell theory states that all living things are made up of cells. Anything that’s alive, from bacteria to plants to humans, is composed of cells. And what are cells? The literal definition is a cell is a group of organelles surrounded by a thin membrane.
The cell theory definition states that cells are the building blocks of life. Cells both make up all living things and run the processes needed for life. Your hair, skin, organs, etc. are all made up of cells. In fact, each person is estimated to be made up of nearly 40 trillion cells! Each part of a cell has a different function, and your cells are responsible for taking in nutrients, turning nutrients into energy, removing waste, and more. Basically, everything your body does, it does because cells are directing the actionThe third part of the cell theory definition states that all cells come from preexisting cells. This means that cells don’t just appear out of thin air (known as “spontaneous generation”). New cells are always made from current cells. This means that all current life on the planet is descended from the very first cells, which first made an appearance on Earth roughly 3.5 billion years ago. Cells have been replicating themselves continuously ever since.
And what does the newer part of the cell theory state? Part four refers to the fact that, in all living cells, energy is continuously transformed from one type to another. Examples of these processes include photosynthesis (where plant cells convert light energy into chemical energy) and cellular respiration (where both plant and animal cells convert glucose into energy). Part five refers to DNA and the fact it is passed from parent cell to child cell. Finally, part six of the cell theory tells us that all cells are made up of the same chemicals: water, inorganic ions, and organic molecules.!
What is dark matter Pls explain!
Answer:
Dark matter is a hypothetical form of matter thought to account for approximately 85% of the matter in the universe. ... Most dark matter is thought to be non-baryonic in nature; it may be composed of some as-yet undiscovered subatomic particles.
A car of mass 800kg travels a distance of 40m at constant speed in a duration of 2.0s. The car exerts a forward force of 15kN.
What is the power generated by the car?
W = F × s
W = 15kN × 40 m
W = 15.000 N × 40 m
W = 600.000 J
P = W/t
P = 600.000 J/2 s
P = 300.000 Watt
P = 300kWatt
#LearnWithEXO
What is the magic triangle used for in science? 10 points
Speed, distance and time can be calculated using a magic triangle. D (the distance) goes in the top of the triangle, S (speed) goes in the bottom left of the triangle and T (time) goes in the bottom right of the triangle.
2. A 2 kg mass has an acceleration of 3 m/s2. What is the force of the mass?
Answer: 6N
Explanation:
F=ma
F = 2kg*(3 m/s^2)
F = 6 kg*m/s^2
[kg*m/s^2 = 1 Newton]
F = 6 N
if two particles have equal momenta, are their kinetic energies equal?
a person walks 4m[w] then 4m[S] then 4m[E] and finally 4m[N]. What is the persons displacement? what is the distance travelled?
None
because 9 + 5 = 10 why? because 4 of the ones in nine are liars pretending to be apart of the number so in reality there is only 5 and 5+5=10
You want to calculate the net force acting on an ice skater who is speeding up while
skating. Which of these is a force you would not add in to calculate the net force?
upward vertical force from the ice that supports the skater
force that the skater exerts on the ground
force exerted on the skater by the ground in reaction to the force the skater
exerts on the ground
gravity
Answer:
force that skater exerts on the ground
Explanation:
How many electrons have been removed from a positively charged electroscope if it has a net charge of 6x10-11?
answer and explain if u can pls :)
Answer:
is it the ans you are looking for
I NEED THE RIGHT ANSWER ASAP THIS IS A SCIENCE QUESTION
Answer:
The answer is B.
Explanation:
A Block has a density of 0.97 g/cm 3. That is why 97 percent of the ice will sink in below the water.
HELP ME PLEASE????????????????????????????????
A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. Wgat is the average speed and average velocity of the bicycle?
Answer:
469
Explanation:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love u
Barnard's star distance from earth in light years
Answer:
5.978 años luz
Explanation:
Hi! Your answer is: The distance between the Barnard's star and Earth is 5.978 light years.
what is linear momentum
Answer:
Linear momentum is defined as the product of a system's mass multiplied by its velocity.
What possible scientific applications are there for determining the chemical composition of materials using spectral information?
Answer:
Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
Explanation:
Hope this helps maybe...
How much energy does your soda lose if 25.0g of water condenses on the outside of the can?
The mass given is 25.0 grams. As for the change in temperature, I will assume that it start off at room temperature, 25°C.
B. Assuming the acceleration is still -9.81 m/s2, what is the instantaneous velocity of the
shuttlecock when it hits the ground? Show your work below.
We have that the instantaneous velocity of the shuttlecock when it hits the ground is
[tex]V_{int}=\sqrt{U^2+19.6H}[/tex]
From the question we are told
Assuming the acceleration is still -9.81 m/s2, what is the instantaneous velocity of the
shuttlecock when it hits the ground? Show your work below.
Generally the equation for acceleration is mathematically given as
[tex]a=v \frac{dv}{dx}\\\\\Therefore\\\\\2ah=v^2-u^2[/tex]
Where
acceleration is still -9.81 m/s2,
Hence,
[tex]V^2-U^2=2(-9.81)*-H[/tex]
Therefore
[tex]V_{int}=\sqrt{U^2+19.6H}[/tex]
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Describe how kinetic energy is needed to increase the system's potential energy.
Answer:
kinetic energy is needed for potential energy since without kinetic energy potential energy would not have the potential energy to do anything
sorry if it doesn't make sense
Explanation:
youre holding a ball in the sky that is potential energy since it has the potential to fall. the kinetic energy is when it falls and lastly the potential is when it hits the floor..
How is air resistance similar to gravity? give me two ways.
Answer:
1. they both act on an object in free fall
Explanation:
2. both help determine how fast the object will accelerate
PI=100 kPa
VI=5 L
P2= 200 kPa
V2=?L
Answer:
Explanation:
100.5=200.V2
V2 = 2,5L
I need help
what force is needed to make a ball fall on earth if it had a mass of 13kg
I'd appreciate if someone could help me thank you
Newton's second law allows finding the answer for the force that attracts the body is 127.4N
Newton's second law indicates that the force that is the interaction between two bodies is directly proportional to the product of the mass and the acceleration.
F = m a
Where the bold letters indicate vectors, F is the force, m the mass, and the acceleration of the body.
When a body is close to the Earth there is an interaction between the body and the planet, we call this interaction weight, it is given by the relationship
W = m g
Where W is the force called weight, m the mass of the body and g the acceleration of the body, which in this case is called the gravity acceleration (g = 9.8 m / s²)
They indicate that the mass of the body is m = 13 kg, let's calculate the weight
W = 13 9.8
W = 127.4 N
In conclusion using Newton's second law we can find the answer for the force that attracts the body is 127.4N
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Sara walks, 3m North, from Point A to Point B. Which is True?
A. Distance and displacement are EQUAL
B. Distance is less than displacement
thank you for helppp
Answer:
the moon is closer to the earth than sun
have a beautiful day
Which describes a molecule? (Select all that apply.)
It can be one element by itself.
It can be the combination of different neutrons.
It can be two or more different elements combined.
It can be two or more of the same elements combined together. please help!
Answer:
a molecule is an electrically neutral group of two or
more atoms held together by chemical bonds
Explanation:
Answer:
It can be two or more of the same elements combined together.
It can be one element by itself.
Explanation:
Hello, are there any furries, artists, equestrians, gamers, athletes, etc? If so reply down below
Say “OwO”if your a furry
Say “bonjour” if your an artist
Say “:-}”or yee haw if your an equestrian
Say “GG!” if your a gamer
Say “Just believe in yourself. Even if you don’t pretend that you do and, and some point, you will.” if your an athlete ⚽️⚾️⛳️⛸
Answer:
bonjour,GG, Just believe in yourself
Explanation:
Answer:
OwO (Also "bonjour" and "GG!" but saying those feels uncomfortably forced qwp)
the attractive or repulsive force between objects is called
I have the answer, but I don’t know how to get the answer. Can anyone explain how to get it?