Answer:
Explanation:
Answer:
There was no anwser
Explanation:
because dylan did not anwser
Make a quantitative graph for the motion of the two cars
In thermodynamics, work is typically done by
O A. solids
O B. energy
O C. gases
O D. liquids
Answer:
C. gases
Explanation:
I don't really know how to explain it work is just typically done by gases. Plus this is the correct answer for a p e .x
how will the gravitational force between two objects change if they are moved to twice their original distance from each other
A 2 times more force
B 4 times more force
C 1/2 of the force
D 1/4 of the force
The gravitational force between two bodies of mass M and m, separated by a distance r, has a magnitude F given by the universal law of gravitation,
F = G M m / r ²
where G is the universal gravitation constant (whose value is unimportant for this question).
If you double the distance r, then the new force has magnitude
G M m / (2r ) ² = 1/4 • G M m / r ²
i.e. 1/4 of the original force's magnitude. So the answer is D.
what is the acceleration if a 5 kg cart is pushed with 30 N of force?
Answer:
6 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{30}{5} \\ [/tex]
We have the final answer as
6 m/s²Hope this helps you
Please Help! If you dont know the answers please dont answer! i will give you brrainlist! if you complete correctly!
Answer:
motion; position; reference; speed; velocity; forces; gravity; friction; direction; acceleration (in order)
Explanation:
A ball is thrown upward at 4 meters per second starting from ground level. How long does it take for the ball to return to the ground?
Answer:
it takes 2 min to return
Explanation:
To cut down on injuries, a highway guardrail is designed to be moved a maximum of 0.05 meters when struck by a car. What is the value of the force constant of the material in the guardrail if it is to withstand the impact of a 1250-kg car traveling at 4.16 m/s ?
Answer:
216.32kN
Explanation:
Force can be expressed according to the formula;
Force = mass ×acceleration
Given
Mass = 1250kg
Velocity = 4.16m/s
Distance = 0.05m
We can get the acceleration first using the equation of motion
v² = u²+2as
4.16² = 0²+2a(0.05)
17.3056 = 0.1a
a = 17.3056/0.1
a = 173.056m/s²
Get the force required
Force = 1250×173.056
Force = 216,320N
Force = 216.32kN
Hence the force constant of the material is 216.32kN
3) Choose the best answer.
The
which caused the card to move was snapping the ruler.
O resistance
O sound
force
speed
4) Select 3 that apply.
Answer:
what?
Explanation:
write it correctly I don't understand the question
An Amtrak going 250m/s comes to a stop in 12s. What is the
acceleration?
Answer:
[tex]a=\frac{v-u}{t} \\a = \frac{0-250}{12} = -20.83 m/s[/tex]
Explanation:
you mean deceleration right ? because the acceleration is 250m/s
Which equation is used to
calculate the atomic mass of an
atom?
Answer:
For any given isotope, the sum of the numbers of protons and neutrons in the nucleus is called the mass number. This is because each proton and each neutron weigh one atomic mass unit (amu). By adding together the number of protons and neutrons and multiplying by 1 amu, you can calculate the mass of the atom.
A mover slides a refrigerator weighing 650 N at a constant velocity across the floor a distance of 8.1 m. The force of friction between the refrigerator and the floor is 230 N. How much work has been performed by the mover on the refrigerator?
Answer:
1863 J
Explanation:
F = Force moving the object
f = Frictional force = 230 N
The forces in the horizontal direction have the force balance
[tex]F-f=0\\\Rightarrow F=f\\\Rightarrow F=230\ \text{N}[/tex]
So, the force by which the object is being pushed is [tex]230\ \text{N}[/tex]
s = The displacement of the object = 8.1 m
Work done is given by
[tex]W=Fs\\\Rightarrow W=230\times 8.1\\\Rightarrow W=1863\ \text{J}[/tex]
The work done by the mover is 1863 J.
Does food have energy?
Answer:
chemical energy that goes for all food actually
Explanation:
How long does it take a cougar to run 170 meter if it run 5m/s?
Answer: 34 seconds
Explanation:
170m/5m=34seconds
Answer:
34 seconds
Explanation:
Because if you divided meter per second by how far it will go there is your answer.
What is the frequency of a mechanical wave that has a
velocity of 1.70 m/s and a wavelength æf 12.05 m?
Explanation:
v= (f) x ( lambda)
1.7 ms^-1/12.05 m = f =o.14 hz
Why is the heliocentric model not correct
Answer:
Um, wrong.
Explanation:
The Helioentric model is correct. We orbit the sun. The GEOcentric model is incorrect. The Universe does not orbit the Earth. What are you learning?
In order to have more power you would need to do the same about of work
Answer:
....
Explanation:
How does the force work
Answer:
A force is a push or a pull.
Explanation:
Example: A boy is pushing a box. He has to push the box to go forward or pull it to go backwards.
Hope this helped
Plz di all plz i will give brainest and thanks to best answer do it right
Answer:
area 4
Explanation:
area 4 has low pressure
pls help i’m in a test and don’t know what to do
Answer:
I think its C, even with the typo.
A ______________ is a continuous flow of water in a single direction. *
Answer:
Current
Explanation:
I think srry if im wrong
Answer: A River system
Explanation: A ___________ is a network of streams that drain an area of land and contains all of the land drained by a river including the main river and all its smaller streams or rivers that flow into larger ones, or tributaries (Source Quizlet)
*CAN SOMEONE HELP ME 100 POINTS*
Answer:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
Explanation:
its the For a fossil to form, several conditions have to be met. First of all, the animal had to live in the given area! Animals live in many environments on Earth, but not everywhere. The water above many lake bottoms and many areas of the deep ocean bottom are stagnant. The bottom water is never exchanged with surface waters, so the water contains no dissolved oxygen. Animals cannot live without oxygen, so no animals live there. In these situations, the only possibility of fossilization is if a fish or other swimming animal dies in oxygen-rich waters above, sinks down into the stagnant muddy bottom, and is buried by sediments.
What is the total force of an object which has a mass of 150kg and is accelerating at 2m/s/s?
Answer:
[tex]\boxed {\boxed {\sf 300 \ Newtons }}[/tex]
Explanation:
Force can be found by multiplying the mass by the acceleration.
[tex]F=ma[/tex]
The mass is 150 kilograms and the acceleration is 2 meters per second per second, or 2 meters per square second.
[tex]m= 150 \ kg \\a= 2 \ m/s^2[/tex]
Substitute the values into the formula.
[tex]F= 150 \ kg * 2 \ m/s^2[/tex]
Multiply.
[tex]F= 300 \ kg*m/s^2[/tex]
We know that 1 kilogram meter per square second is equal to 1 Newton. Therefore our answer of 300 kg*m/s² is equal to 300 N[tex]F= 300 \ N[/tex]
The force of the object is 300 Newtons.
Question 19 D
An electron is accelerated in an electric field through a potential difference of +2400 V. Which of the following justifies why the change in kinetic energy can be calculated using AU = QAV?
А
The electric field exerts a force on the electron that is proportional to the electron's charge
B
The change in potential energy of the field electron system is equal to the change in kinetic energy of the particle
с
The work done on the particle by the field is equal to the electric force times the distance the electron moves.
D
Changes in potential and kinetic energies are always equal.
Option B is the correct option.
The change in kinetic energy can be calculated using ΔU = QΔV because the change in potential energy of the field electron system is equal to the change in kinetic energy of the particle.
What is the law of conservation of energy?
The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.
According to this law of conservation energy, the potential energy of a substance can be converted into kinetic energy of the substance.
Mathematically, the relation between change in kinetic energy and change in potential energy is given as;
ΔU = ΔK.E
where;
ΔU is change in potential energyΔK.E is change in kinetic energyFor an electron accelerated in an electric field through a potential difference of +2400 V, the change in potential energy is given as;
ΔU = QΔV
where;
ΔU is change in potential energyQ is the charge of the electronV is the potential differenceThus, the change in kinetic energy of the electron can be calculated due to law of conservation of energy.
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A box is 30cm wide 40cm long and 25cm high calculate the area of its base
Answer:
1200cm^2
Explanation:
length of the box (L) = 40 cm
width of the box (W) = 30 cm
Area of the base is obtained as the area of the rectangle. Recall that the base of a box is a rectangular shape.
Therefore;
Area of base = 40cm * 30cm =1200cm^2
the slope of a position-timw graph can be used to find the moving objects.....?
Answer:
Velocity
Explanation:
The slope of a position-time graph gives velocity of a moving object.
3. How do the individual forces compare when the rider experiences a sensation of
being heavier than his normal weight? What is the acceleration direction when this
occurs?
Answer:
When the acceleration of the elevator is going upward, the rider experiences a sensation of being heavier than his normal weight due to the upward normal force being more than the rider's weight.
When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.
What are the characteristics of elevator?A person riding in an elevator subjected to a series of unbalanced forces depending on the direction the elevator is travelling.
Two forces are acting on the person, the force of gravity and the upward normal force from the elevator.
When the elevator is going upwards with acceleration a, the person feels heavier than his normal weight, due to the upward normal force being greater than the person's weight.
N = mg + ma
When the elevator is moving downwards with acceleration a, the person feels lighter due to the downward normal force being less than the person's weight.
N = mg - ma
However, when the elevator is moving up or down at constant velocity ie. acceleration a = 0, the person experience a normal force equal to weight.
N = mg
When the elevator is moving downwards with acceleration a = g, the person experiences weightlessness.
N = (mg - mg) = 0
When the elevator is accelerating downward, the person feels lighter due to the downward normal force being less than the person's weight.
Learn more about elevator,
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URGENT PLEASE HELP ME ASAP
What is delayed gratification?
Being slow to acknowledge your gratitude
Eating something later that you could have eaten immediately
Enjoying the pleasure of an immediate reward, so that you can be confident later
Denying the pleasure of an immediate reward so that you can receive a greater reward later
Answer:
The correct answer is - Denying the pleasure of an immediate reward so that you can receive a greater reward later.
Explanation:
Delayed gratification is a gratification method or the process that helps in improving self-control and helps in goals that take time to achieve. It is referred to as the ability to stop or prevent oneself from something more rewarding or pleasurable immediately, in order to get something more pleasurable or rewarding later.
For instance, an individual watch tv before a big exam or studying for the exam so can watch tv after getting good grades.
The correct answer is - option D.
A car travles a distance of 540km in 6 hours. What speed did it travel at?
I WILL MARK BRAINLIEST!
A 0.040 kg dart is thrown with a momentum of +1.5 kg m/s at a dart board. The dart took 0.030 seconds to stop when it struck the board. What is the magnitude of the force the dart exerted on the board?
A)1.3 N
B) 15 N
C) 50 N
D) 60N
Answer:
Explanation:
The answer is C
The magnitude of the force the dart exerted on the board is 50 Newton.
What is force?The definition of force in physics is: The push or pull on a mass-containing item changes its velocity.
An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. Newton is the SI unit of force.
Given parameters:
Mass of the dart: m= 0.040 kg.
Momentum of the dart: p = + 1.5 kg m/s.
Time required to stop = 0.030 seconds.
Hence, the magnitude of the force the dart exerted on the board is =
change in momentum/time
= (1.5 - 0.040×0)/0.030 Newton
= 50 Newton.
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PLEASE HURRY!!!
The diagram shows a device that uses radio waves.
What is the role of the part in the diagram labeled X?
a) modulate, amplify, and send out waves
b) capture, amplify, and demodulate waves
c) change the amplitude and frequency of waves
d) change the pulse and phase of waves
Answer:
A.
Explanation:
X represents the transmitting power Modulates (amplitude or frequency am/fm), amplifies the signal, transmitting it out at whatever direction the antenna is set up for.
Answer: A just took the quiz on edge
Explanation:
