Answer:
impulse is the product of a force and the time during which the force acts
Explanation:
i hope this will help you :)
You push a cart with mass 15 kg forward , giving it an acceleration of 3 m/s ^ 2 . How much force did you apply ? O A. 0.2N O B. O 18N O D. 45 N
Answer: force = mass x accelegation
Explanation: 15x3 = 45 N
Answer:
A
Explanation:
The graph below shows the conservation of energy for a skydiver jumping out
of a plane and landing safely on the ground. Which energy is represented by
line B?
A. Elastic energy
B. Kinetic energy
C. Light energy
D. Potential energy
Answer:
The correct option is:
B) Kinetic Energy
Explanation:
We know that if a body is placed at a certain height, it possesses Potential Energy, which is represented by 'mgh'. In this case, when the skydiver is present in the plane, before jumping, he has potential energy as he is at height 'h'.
As Kinetic energy is given as '(1/2)mv²' dependent on velocity of the object, when the skydiver jumps of the plane, his height starts decreasing, which decreases his Potential Energy. As energy can neither be created or destroyed, but is converted to one form or another, all this Potential energy starts to convert into Kinetic energy. As Potential Energy decreases with distance, Kinetic energy increases. Hence, line B represents Kinetic Energy.
What is the purpose of putting dimples on the surface of materials?
Answer:
Dimples help the golf ball convert spin into lift.
But it was quite an accident that this effect was discovered.
Explanation:
Please i need a Brainliest.
Answer: It depends on the material and its purpose.
Explanation:
at a surface level question, I would assume for the most part, less area available for friction.
Why does the pattern of colors repeat in a thin soap film? Please use 2 content related sentences. (ref: p.522-530)
Answer: The pattern of colors that repeat in a thin soap film is a result of the interference of light waves reflecting off the front and back surfaces of the film. The specific colors seen are determined by the thickness of the film, with different wavelengths of light being reflected or refracted at different angles, creating the characteristic rainbow pattern.
Calculate the orbital radii for the first six principal quantum numbers
Answer:
Explanation:
Formula for calculating radius is
r=.529A x n^2 where A=10^-10m
So put n=1,2,3,4............
An airplane with a total mass of 850 kg has an engine malfunction, causing it
to provide a constant horizontal force of 4000 N. The pilot, who has a mass
of 80 kg, decides to eject from the airplane. With the reduced total mass,
what is the new approximate acceleration of the airplane?
A. 3.1 m/s2
B. 5.2 m/s2
C. 2.8 m/s2
D. 3.7 m/s2
Answer:
B
Explanation:
If the pilot, who has a mass of 80 kg, decides to eject from the airplane. With the reduced total mass,then the new approximate acceleration of the airplane will be 5.2 m/s²
What is Newton's second law?
Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = m*a
where F represents the force applied
m is the mass of the object
a is the acceleration of the object
The initial acceleration of an airplane with a total mass of 850 kg has an engine malfunction, causing it to provide a constant horizontal force of 4000 N.
F =m*a
4000 N = 850×a
a= 4.7 m/s²
An acceleration of airplane when the pilot, who has a mass of 80 kg, decides to eject from the airplane. With the reduced total mass,
the horizontal force is the same 4000 N, now the total reduced mass the airplane is 770 kg
F =m*a
4000 =770×a
a = 5.2 m/s²
Learn more about Newton's second law, here
brainly.com/question/13447525
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Why do atoms bond? Describe examples of the two ways elements complete their valence
shell through bonding
Answer: kindly see Explanation
Explanation:
Atoms bond in other to achieve a stable valence electron shell. Through bonding, atoms with incomplete valency in the outer shell may accept, lose or share electrons with another atom in other to achieve a stable outer shell or configuration.
Ionic bonding:
Ionic or electrovalent bonding simply occurs when atoms accept or lose electrons in their outer shell in other to achieve stability. Elements that require 1 atom to achieve stability accepts from elements which requires losing 1 atom in other to achieve a stable outer shell.
Example is Sodium chloride (NaCl) sodium loses one atom, which chlorine accepts and both achieve a stable outer shell.
Covalent bonding simply refers to electron sharing between atoms. Instead of losing or accepting, the atoms bond by sharing electron to achieve stability. Such is the bonding between Hydrogen and Oxygen in the formation of H2O, oxygen requires two electrons to attain stability, each hydrogen atom requires one each to attain stability, through sharing oxygen attains two more electrons, one each from the hygrogen atoms and the oxygen atom also shares one electron with each hydrogen atom. Then all the atoms atoms stability.
Answer:
1.) Atoms bond in order to gain more stability.
2.) They can complete their valence by sharing (taking and giving) electrons for 1.)
Explanation:
Hope This Helps
a toy airplane is flying at a speed of 8 m/s with an acceleration of 0.9 m/s^2. How fast is it flying after 2 seconds? A)9.8 m/s B)8.1 m/s C)5.2 m/s D)3.6 m/s
Answer:
A) 9.8m/s this answer is correct.
The acceleration is increasing by 0.9m/s^2 .
so, in each second it will increase by 0.9m/s^2.
Therefore, in 2 second
0.9 * 2
= 1.8m/s
Now,
8 + 1.8
= 9.8m/s
in a car how does an airbag minimize the force acting on a person during a collision
Answer:
It increases the time it takes for the person to stop.
Explanation:
Answer:
It increases the time it takes for the person to stop.
Explanation:
What are data?
A. Pieces of information recorded in an experiment
B. Sources that summarize a primary source
C. Educated guesses about the outcome of an experiment
D. Variables that are adjusted by the experimenter
SUBNIIT
Answer:
Data is pieces of information recorded in an experiment because data are individual pieces of factual answer recorded and used for the analysis
Explanation:
I hope this will help you :)
What is the acceleration of an object in free fall near Earth's surface?
A. 4.9 m/s2
B. 1 m/s2
C. 0.98 m/s2
D. 9.8 m/s2
Answer:
D 9.8 m/s^2
Explanation:
The force of gravitational gravity on earth is 9.8 m/s^2
In a closed system, _____ energy is equal to potential energy plus kinetic energy. A. mechanical B. electrical C. thermal D. chemical
Answer:
Well, Your answer is Mechanical. Because, The Mechanical energy is the sum of the kinetic energy and the potential energy. In the closed systems, The mechanical energy is equel to potential energy plus kinetic energy.
Good Luck!!~
By Itsbrazts
Answer: Mechanical Energy
Explanation: The Mechanical energy of an object is equal to Potential energy plus Kinetic energy.
As your bike coasts downhill, your speed goes from 2 m/s to 4 m/s in 0.5 seconds. What is your acceleration?
A. 4 m/s
B. 1 m/s
C. 2 m/s
D. 8 m/s
Answer:
A.4m/s
Explanation:
(4m/s-2m/s)÷0.5s
=2m/s÷0.5s
=4m/s
what are three reasons we should be concerned about the current rapid extinction rate
Answer:
1. Possibility of all life being wiped out
2. Ecosystem being imbalanced.
3. Loss of one species triggers the lost of others as the food chain will collapse.
Answer:
a
Explanation:
"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution?"We the people of the United States, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this Constitution for the United States of America." - The United States Constitution According to the Preamble, which action would be allowed by The Constitution? A) helping businesses pay their workers less B) giving Congress the power to create courts C) granting government the power to seize people's property D) securing the rights of the wealthy over the rights of the poor
The correct answer is B) Giving Congress the power to create courts
Explanation:
One of the principles the Constitution mentions in the preamble is Justice, this is mentioned in "We the people of the United States, in order to form a more perfect union, establish justice..." According to this, a priority is to make the country have justice, which is possible through courts, laws, among others. In this context, the action that would be allowed is "Giving Congress the power to create courts" because this might ensure the justice principle is applied in the U.S.
How many ohms of resistance must be present in a circuit that has 240 volts and a current of 15 amps?
ОА.
3,600 ohms
О В.
16 ohms
230 ohms
D. 0.063 ohms
Answer:
16 ohms
Explanation:
V= I ⋅ R
where, V is the net potential difference in the circuit, I is the current in the circuit and R is the net resistance of the circuit.
In this case, V = 240 volts, I = 15 amperes.
240 = 15 ⋅ R
⇒ R = 240/ 15 = 16 ohms
Answer:
b-16ohms
Explanation:
If you are using online learning/PLATO the answer is proven to be B-16 ohms
A 51-kg woman runs up a vertical flight of stairs in 5.0 s. Her net upward displacement is 5.0 m. Approximately, what average power did the woman exert while she was running?
Answer:
510
Explanation:
Power= Rate of doing work i.e work done\time
=force*displacement\time
=mass*g*d\t
=51*10*5/5
=510watt
A person on a merry-go-round is constantly accelerating away from the center?
true or false
That statement is false. It's exactly the opposite direction.
In circular motion, the "centripetal" force ... and therefore the centripetal acceleration ... points TOWARD the center.
Answer:
False
Explanation:
Took The Quiz
A camera lens focuses on an object 75.0 cm from the lensThe image forms 3.50 cm behind the lens. What is the magnification of the image?
Answer:
7/150
Explanation:
The following data were obtained from the question:
Object distance (u) = 75cm
Image distance (v) = 3.5cm
Magnification (M) =..?
Magnification is simply defined as:
Magnification (M) = Image distance (v)/ object distance (u)
M = v /u
With the above formula, we can obtain the magnification of the image as follow:
M = v/u
M = 3.5/75
M = 7/150
Therefore, the magnification of the image is 7/150.
Answer:
-0.0466
Explanation:
an inclined plane makes work easier by increasing the distance and decreasing the____.
Answer:
force
Explanation:
Answer:
force
Explanation:
A girl runs up the down escalator in the mall. If the escalator is moving with a
velocity of 24 m/min and the girl is running with a velocity of 30 m/min, how far up the escalator can she go in 4 minutes?
A. 10 m
B. 30 m
C. 48 m
D. 24 m
Answer:
D. 24 m
Explanation:
Running up - velocity + 30 m/min
Escalator 's moving down velocity - 24 m/min
Sum velocity (30 - 24) = 6 m/min
6 m/min * 4 min = 24 m
hydrogen bonding is a strong attractive force. T OR F
Answer:
F
Hope it helps you!
A scientist adds different amounts of salt to 5 bottles of water. He then measures how long it takes for the water to boil. what is the dependent variable in this experiment?
In which of the following situations or places would you want to reduce the
force of friction?
I A. Skiing down a hill during a race.
B. Walking down a steep hill.
C. Sitting in the bed of a pickup truck while it turns a corner
D. In the axle of the wheels while you ride your bicycle.
Answer:
D
Explanation:
The correct answer would be in the axle of the wheels while you ride your bicycle.
Options A, B, and C requires that the forces of friction is increased in order to have more control.
However, option D requires that there is a minimal frictional force in the axle of the wheels of a bicycle while riding so that a little effort would be required to keep the bicycle moving.
The lesser the friction, the lower the effort that would be needed to keep the bicycle moving and vice versa.
Referring to the above diagram, how high will the ball rise on the right-hand incline?
0 cm
7 cm
15 cm
no way to tell
What is the tendency of a material to oppose the flow of charge?
I think the answer is Resistance. If the link i posted int he comment is right.
Why don't you feel the pressure exerted by the atmosphere?
Answer:
the air within our bodies (in our lungs and stomachs, for example) is exerting the same pressure outwards so there's no pressure difference and no need for us to exert any effort.
Explanation:
Because in our body blood also exerts pressure that's why we don't feel atmospheric pressure.
Answer it plz the answer is easy but cant undersatand
Answer:
2.
a. 3 meters^3 is the volume.
Explanation: This is when we find the volume of a rectangular prism which is whl so, 2*1.5*1=3^3.
b. 3000 is the mass.
Explanation: Density is calculated by mass/volume so, 1000=m/3. When we multiply 3 to both sides, we get 1000*3 which is 3000. So, 1000=3000/3.
Hope this helps!!! PLZ MARK BRAINLIEST!!!
Do you believe the right to property is a natural right? Why or why not?
What is the energy conversion in a hair dryer?
A. Heat energy to electric and mechanical energy
B. Potential energy to electric and kinetic energy
C. Electric energy to heat and kinetic energy
D. Light energy to mechanical and electric energy
Answer:
C.Electrical energy to heat and kinetic energy