Answer:
Newton's third law states that " for every action, there is an equal and opposite reaction". In soccer, when you kick the soccer ball you will feel the force of the kick back into your leg. You won't feel the force as much because your legs have more mass than the soccer ball.
How can a conductor be made superconductor?
Answer:
a superconductor in a magnetic field and you'll make electric currents flow through its surface. These currents create a magnetic field that exactly cancels the original field trying to get inside the superconductor and repelling the magnetic field outside.
Explanation:
Which pair of sentences best describes a scientific discovery in A Black Hole Is NOT a Hole by Carolyn Cinami DeCristofano?
The answer is C.
Answer:
A question with an Answer? Wowza!
Explanation:
Answer:
First, scientists studied radio waves coming from space. Next, other scientists used their discoveries to identify black holes.
Explanation:
hope this helped
what is newton's second law of motion?
Answer:
Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
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Some of our appliances have a magnet in it.
yes or no
Answer:
yes !!
Explanation:
Magnets can be found in the simplest or most complex devices you use every day. From home appliances such as the refrigerator, microwave oven and electric fan, to your company's office equipment such as computers and printers. All these devices use magnets.
It takes Alessandra 20 minutes to walk to school every day. If she walks at a rate of 3 km/hour, how far does she walk?
A. 1km
B. 17km
C. 23km
D. 60km
Which theory explains that cussing in front of your grandparents or hugging a stranger would be okay to you based on social context?
Group of answer choices
Social cognitive theory
social trait theory
Social science theory
social concrete theory
A car Starts from rest and moves with constant acceleration.During the 5th second of its motion, it covers a distance of 36 meters. What is the acceleration of the car? A) 12 meter per second B) 8 meter per second C) 15 meter per second D) 16 meter per second E) 14 meter per second
Answer:
Acceleration of the car = 2.88 meter/second²
Explanation:
Given:
Car starts from rest
So,
Initial velocity = 0 m/s
Time taken = 5 second
Distance cover in 5 seconds = 36 meter
Find;
Acceleration of the car
Computation:
Using second equation of motion
S = ut + (1/2)(a)(t²)
Where;
S = Distance cover
u = Initial velocity
a = Acceleration
t = time taken
So,
S = ut + (1/2)(a)(t²)
36 = (0)(5) + (1/2)(a)(5²)
36 = (1/2)(a)(25)
36 x 2 = (a)(25)
72 = (a)(25)
Acceleration of the car = 2.88 meter/second²
I need help on this question!!
Answer:
[tex]\boxed {\boxed {\sf 6000 \ Joules}}[/tex]
Explanation:
Work is the product of force and distance.
[tex]W=F*d[/tex]
The force is 500 Newtons and the couch is raised 12 meters above the ground.
Substitute these values into the formula.
[tex]W=500 \ N * 12 \ m[/tex]
Multiply.
[tex]W=6000 \ N*m[/tex]
1 Newton meter is equal to 1 Joule.So, our answer of 6000 N*m equals 6000 J[tex]W= 6000 \ J[/tex]
The work done to move a 500 Newton couch 12 meters is 6000 Joules. Therefore, choice D is correct.
Answer:
Solution :-We know that
Work = Force × Displacement
Work = 500 × 12
Work = 6000 J
[tex] \\ [/tex]
A light source has a frequency of 7.56 x 1014 Hz. What is the wavelength, in nanometers (nm), of this light when it passes through a prism of refractive index of 1.53?
Answer:
2nm
Explanation:
Which explanation best compares the movement of particles in the three states of matter?
A.
Particles in a gas can only vibrate. In a solid, they slide against each other. In a liquid, they move freely, bouncing and bumping into each other.
B.
Particles in a solid can only vibrate. In a liquid, they slide against each other. In a gas, they move freely, bouncing and bumping into each other.
C.
Particles in a liquid can only vibrate. In a gas, they slide against each other. In a solid, they move freely, bouncing and bumping into each other.
D.
Particles in a solid can only vibrate. In a gas, they slide against each other. In a liquid, they move freely, bouncing and bumping into each other.
E.
Particles in a liquid can only vibrate. In a solid, they slide against each other. In a gas they move freely, bouncing and bumping into each other.
Answer: B
Explanation:Solids are packed thus molecules are restricted and can only vibrate. Liquids, on the other hand, molecules can move and slide against each other since they are loosely packed. Lastly, gas particles is very loosely packed so they can move freely.
anyone know the answer ?
Answer:
d
Explanation:
the answer of the above mentioned question is 2N to the left.
hope this helps!
a skier starts from rest and skis down a 82 meter tall hill labeled h1, into a valley and staught back up another 35 meter hill(labled h2). How fast in m/s is she going at the top of the 35 meter hill? Assume no friction
Answer:
She is going at 30.4 m/s at the top of the 35-meter hill.
Explanation:
We can find the velocity of the skier by energy conservation:
[tex] E_{1} = E_{2} [/tex]
On the top of the hill 1 (h₁), she has only potential energy since she starts from rest. Now, on the top of the hill 2 (h₂), she has potential energy and kinetic energy.
[tex] mgh_{1} = mgh_{2} + \frac{1}{2}mv_{2}^{2} [/tex] (1)
Where:
m: is the mass of the skier
h₁: is the height 1 = 82 m
h₂: is the height 2 = 35 m
g: is the acceleration due to gravity = 9.81 m/s²
v₂: is the speed of the skier at the top of h₂ =?
Now, by solving equation (1) for v₂ we have:
[tex] v_{2}^{2} = \frac{2mg(h_{1} - h_{2})}{m} [/tex]
[tex] v_{2} = \sqrt{2g(h_{1} - h_{2})} = \sqrt{2*9.81 m/s^{2}*(82 m - 35 m)} = 30.4 m/s [/tex]
Therefore, she is going at 30.4 m/s at the top of the 35-meter hill.
I hope it helps you!
A cat runs up a 45 m tall tree in 1.4 s. What is the average velocity of the cat?
0.031 m/s, up
44 m/s, up
63 m/s, up
32 m/s, up
Answer:
Explanation:
d = 45
t = 1.4 seconds
v = delta d / t
v = 45 / 1.4
v = 32 m/s
You are running late for class and are still in the hallway when the bell rings. The tardy bell is right outside your classroom door, and your teacher is standing directly beneath it. If you are running towards the bell when it rings, which of the following best describes what you hear? (DOK 1)
Question 8 options:
A. You hear a higher pitch than your teacher
B. You hear a lower pitch than your teacher
C. You hear a louder pitch than your teacher
D. You hear the same pitch as your teacher
Answer:
C
Explanation:
You will hear a lower pitch of sound than your teacher who is directly below the bell.
The pitch of a sound refers to how high or low the sound is. If a sound is high we say that it has a high pitch and vice versa.
We must note that the closer you are the bell the higher the pitch of the bell sound you hear. Hence, you will hear a lower pitch of sound than your teacher who is directly below the bell.
Learn more about pitch of sound: https://brainly.com/question/4206267
For stars to form, the temperature of the hydrogen in a nebula must be more than 14 million Kelvin. How did gravitational attraction help achieve these high temperatures?
Answer:
Gravitational attraction caused the volume of the nebula to decrease, which raised the particle motion and temperature at the center of the nebula to the necessary 14 million Kelvin.
Explanation:
Plato/edmentum sample answer
Gravitational attraction caused the volume of the nebula to decrease, which raised the particle motion and temperature at the center of the nebula to the necessary 14 million Kelvin.
What is Gravitational attraction ?Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.[note 1] The publication of the theory has become known as the "first great unification", as it marked the unification of the previously described phenomena of gravity on Earth with known astronomical behaviors.
This is a general physical law derived from empirical observations by what Isaac Newton called inductive reasoning. It is a part of classical mechanics and was formulated in Newton's work Philosophiæ Naturalis Principia Mathematica ("the Principia"), first published on 5 July 1687. When Newton presented Book 1 of the unpublished text in April 1686 to the Royal Society, Robert Hooke made a claim that Newton had obtained the inverse square law from him.
In today's language, the law states that every point mass attracts every other point mass by a force acting along the line intersecting the two points. The force is proportional to the product of the two masses, and inversely proportional to the square of the distance between them.
Learn more about Gravitational attraction
https://brainly.com/question/25624188
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Some individuals have developed to use echolocation and thus able to see even if they are blind, True or False
Answer:
please give me brainlist and follow
Explanation:
The good news is that anyone can learn this ability, blind or sighted. Lore says that echolocation requires probably as much commitment as developing expert long cane skills. Lore acknowledges that, while there are many people who have some basic echolocating skills, there are only a few who really master this ability.
In the United States, which type of industry is often considered part of an oligopoly?
Answer:
In the United States,cell carrier services are often considered to be a part of an oligopoly
Explanation:
Cell carrier services are a brand value and imagine
Suppose, the same angular momentum is transferred to two rotating bodies of different moment of inertia , how will you compare the angular velocities of the two bodies as a result of angular momentum transfer.
Answer:
As per the law of conservation of angular momentum, the angular velocity will be higher for the body with a lower moment of inertia and vice versa.
Explanation:
Angular momentum L of a body is given by:
[tex]L=I\times \omega[/tex]
Now when the same angular momentum is transferred to two different bodies with different moment of inertia, the body with a higher moment of inertia will have lower angular velocity and vice versa.
What is a concentrated solution
Answer:
A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.
Joe is standing on the pedal of a bicycle. If his mass of 65 kg, the pedal makes an angle of 55º above the horizontal, and the pedal is 18 cm from the center of the chain ring, how much torque does he exert?
a. 4 N·m c. 94 N·m b. 18 N·m d. 122 N·m
...
Answer:
94 N-m
Explanation:
Joe is standing on the pedal of a bicycle. If his mass of 65 kg, the pedal makes an angle of 55º above the horizontal, and the pedal is 18 cm from the center of the chain ring. The amount of torque Joe exert is 94 N-m.
What is torque?The force that can cause an object to rotate along an axis is measured as torque. Similar to how force accelerates an item in linear kinematics, torque accelerates an object in an angular direction. A vector quantity is a torque.
Torque is defined as Γ = r×F = r.F.sin(θ). In other words, torque is the cross product of the force vector, where 'θ' is the angle between r and F, and the distance vector (the distance between the pivot point and the place where force is applied).
Given in question mass 65 Kg so force, F = mg = 637 N
Distance r = .18 m and θ = 55 so sinθ = .82
Torque = rFsin(θ) putting the values, we get
Torque = 94 N-m.
The amount of torque Joe exert is 94 N-m.
To learn more about torque refer to the link:
brainly.com/question/6855614
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A 2,000 kg freight train is traveling on the railroad tracks from Birmingham to Mobile. It traveling at a speed of 25 m/sec. What is the kinetic energy of this train?
Answer:
The correct answer is "625,000 J".
Explanation:
The given values are:
Mass,
m = 2,000 kg
Speed,
v = 25 m/sec
As we know,
⇒ [tex]Kinetic \ energy=\frac{1}{2} (mass \times speed^2)[/tex]
Or,
⇒ [tex]K.E=\frac{1}{2}(mv^2)[/tex]
On substituting the values, we get
⇒ [tex]=\frac{1}{2}(2,000\times 25^2)[/tex]
⇒ [tex]=1000\times 625[/tex]
⇒ [tex]=625,000 \ J[/tex]
A 1.2 m long wave travels 11.2 m to a wall and back again in 4.0 s. What is
the FREQUENCY of the wave*
Answer:
f = 4.67 Hz
Explanation:
We can approximate the wave as a traveling wave, therefore the speed of the wave is constant
v = d / t
the total distance remember, in going to the wall and back is
d = 2 11.2 = 22.4 me
we substitute
v = 22.4 / 4.0
v = 5.6 m / s
now we can use the relationship between the speed of the wave, its wavelength and u frequency
v =λ f
f = v /λ
f = 5.6 / 1.2
f = 4.67 Hz
Which is an example of a polyatomic ion?
Answer:
Well-known examples of such polyatomic ions are the sulfate ion (SO42–), the hydroxide ion (OH–), the hydronium ion (H3O+), and the ammonium ion (NH4+).
Explanation:
Answer:
is there more context to go with this question? Like a photo?
I will give it my best shot anyhoo
Explanation:
Polyatomic ions: they are covalently bonded groups of atoms and having a positive or negative charge caused by the formation of an ionic bond with another ion.
And if your question is anything like the one I had a few days ago on a test, your answer would be something like "Both hydroxide cation (OH -) and phostphate cation (PO 4 3 -) are polyatomic ions)
Table is in the picture. and will mark brainstest
Here is the question
Based on the table, which list orders materials from most conductive to least conductive?
A) copper, zinc, plastic glass insulator weak plastic insulator medium B) rubber, copper, glass rubber insulator strong zinc conductor weak
C) aluminum, glass, zinc
D) zinc, copper, aluminum
Answer:
C
Explanation:
Answer: Rubber, copper, aluminum, plastic, zinc, glass
Explanation:Or something along those lines
A baseball sits motionless near first base on a baseball diamond. What statement best explains why the baseball remains motionless?
Answer:
Because no one is using that ball, so it is motionless
Answer:
No one is using the ball (dead ball) and therefore it is motionless and out of play
Explanation:
It is a good idea to read or exchange text messages during all of the following times EXCEPT:
A.
while driving a car
B.
while eating lunch
C.
while waiting at the doctor's office
D.
while riding a bus
Please select the best answer from the choices provided.
A
B
C
D
Answer: A while driving a car. It is unsafe
Answer:
It is a good idea to read or exchange text messages during all of the following times except while driving a car.
Explanation:
Eating lunch and using your phone is very safe. The only way I can see it being bad is if you handed your phone to some toddlers and took it back without wiping it off!
If you're waiting for your appointment or waiting to reach your destination, then there is also no harm. As long as you are not driving the bus or you're not the doctor working on patients while texting, then this should be alright.
This leaves us with driving. The commercials tell us. Common knowledge tells us. Hopefully, parents or colleagues or even your own kids (I've had to do this to my dad countless times before) have told you this...
DO NOT TEXT WHILE DRIVING.
So many accidents happen solely for this reason. People, just put down the phone and wait 'til you're at a red light or, even better, when you reach your destination.
So no, it is not a good idea to read OR exchange text messages while driving. Any other time? Well, go ahead! But if you're in that driver seat and your currently in the road with other cars, take into consideration the fact you are not the only person there. Keep everyone safe and drop that phone!
....
My bad, I got long winded. Hope this helped!
Source(s): TV Commercials, myself.
Marking brainliest help pls the formula are there to help ^
A 0.5kg squirrel climbs a tree. When it reaches the top its potential energy is 34.3J. How high did it climb?
Answer:
Explanation:
Look at the equation for Potential Energy. PE = mass times gravity times the height. Filling in and solving for h:
34.3 = .5(9.8)h so
34.3 = 4.9h so
h = 7 meters
Pls help me with this one. will give brainliest
Answer:
Copper Wire
Explanation:
The Copper is soft, electrically conductive, and breaks down easily copper wire has resistance in Ohms this resistance opposes the magnetising currents flowing through them.
Can someone please help me with science.
Answer:
Yes
Explanation:
Yes I try to help you with science