Answer:
Explanation:
How much force does a 1000kg car need to accelerate at 3m s2 to the south?
Answer- the force needed to accelerate the 1000kg car by 3m/s2 is 3000N.
What is the kinetic energy
Answer:
energy which a body possesses by virtue of being in motion
Explanation:
For a rotating object experiencing no net external torque, what happens to the rate of rotation if the moment of inertia of the object decreases by a factor of 2
Answer:
The rate of rotation increases by a factor of 2.
Explanation:
The rate of rotation will become two times as the moment of inertia will be decreased by 2 times for the constant torque.
What will be the rate of rotation?The torque for the rotating body will be given by the formula
[tex]T= I\alpha[/tex]
Here,
T= Torque
I= Moment of inertia
[tex]\alpha=[/tex] Angular acceleration / Rate of rotation
Now from the question, it is given that a rotating object experiencing no net external torque, what happens to the rate of rotation if the moment of inertia of the object decreases by 2 times.
Here moment of inertia will be [tex]I'=\dfrac{I}{2}[/tex]
So the formula will become
[tex]T= \dfrac{I}{2} \times \alpha[/tex]
Now for making the Torque to be constant the acceleration should be two times [tex]\alpha'=2\alpha[/tex]
So for constant torque
[tex]T= \dfrac{I}{2} \times 2\alpha[/tex]
Thus The rate of rotation will become two times as the moment of inertia will be decreased by 2 times for the constant torque.
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which refers to the distance between two crests or two troughs on a transverse wave?
Answer: wavelength
hope this helps XD
A student is attempting to design a simple generator that is capable of generating the greatest amount of electric current. He created four prototypes each with a different number of turns of wire. Two of the prototypes used strong magnets and the other two used weak magnets. He tested each prototype by rotating the magnets inside the turns of wire and measured the current generated by each prototype. What conclusion can the student draw from the data he collected?
Answer:
uhm
Explanation:
Answer:its b
Explanation:
Diego and Mika are trying to remove a tire from
Diego's car. When they pull together in the same
direction, Mika with a force of 23 N and Diego
with a force of 31 N, they just barely get the tire
to move off the wheel. What is the magnitude of
the force between the tire and the wheel?
The force is an additive quantity allows to find the result for the total force exerted by the two people is:
[tex]F_{total}[/tex] = 54 N
Newton's second law gives a relationship between the net force, the mass and the acceleration of the body, when the acceleration is zero, this expression is called the equilibrium condition.
∑ F = 0
Where F is the force that is a vector quantity and therefore additive.
They indicate that the two people pull with a force of 23 N and 31 N in the same direction.
[tex]F_{total} = F_1 +F_2[/tex]
Let's calculate.
[tex]F_{total}[/tex] = 23 +31
[tex]F_{total}[/tex] = 54 N
In conclusion, using that force is an additive quantity, we can find the total force exerted by the two people is:
[tex]F_{total}[/tex] = 54 N
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"The slumped area in this model supports grassy vegetation. What does this say about the speed of the mass movement, and why are there no trees growing in the slumped area?"
Slumped area only supports grassy vegetation and no trees can be grow on it.
A slump is a form of mass wasting that occurs when a rock layer moves at a short distance down a slope, this type of area is called slumped area. The speed of the mass movement at slumped area is slow i.e. few cm per year or meter per year.
There are no trees growing in the slumped area because trees required fixed land but the land moves at the slumped area so we can conclude that slumped area only supports grassy vegetation and no trees can be grow on it.
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Answer:
The grassy vegetation in the slumped soil indicates slow movement of material, and it appears recently enough that trees have not had time to establish themselves.
Explanation:
It likely moved gradually over a period ranging from days to years. Grassy vegetaion has been able to establish on the surface without any breaks or open soil visible, this is evidence of the gradual movement.
How to calculate the angle of a resultant
Answer:
The direction angle θ of the resultant in the Polar (positive) specification is then θ = α + 60°. The Law of Cosines is used to calculate the magnitude (r) and the Law of Sines is used to calculate the angle (α).
two different r resistors in parallel always have the same ____________; two resistors in series always have the same ______________.
Answer:two different r resistors in parallel always have the same U; two resistors in series always have the same I.
Explanation:
If two different r resistors in parallel always have the same voltage or potential difference across them and if two resistors in series always have the same electric current passing through them .
What is resistance?Resistance is the obstruction of electrons in an electrically conducting material .
The mathematical relation for resistance can be understood with the help of the empirical relation provided by Ohm's law .
V = I × R
The voltage is the same if the resistance is connected in a parallel arrangement .
The current is the same if the resistance is connected in a series arrangement .
Thus , If the voltage or potential difference across two separate resistors connected in parallel is always the same, as well as the electric current flowing through two resistors connected in series .
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A light bulb is plugged into a wall outlet (220 V) and it uses 0.68 amps. What is the light bulb’s resistance?
Answer:
14.96 amps
Explanation:
Need help! Thanks for whoever answers.
Hi there!
Finding the time taken to land deals with the VERTICAL motion of the object, so we can disregard the horizontal velocity.
Use the simplified kinematic equation:
t = √2h/g
Plug in given values. Let g = 9.8 m/s²
t = √2(75)/9.8 = 3.91 sec
Electric current moves from low voltage to
high voltage.
True
False
What type of energy is primarily associated with the random motion of the particles in a substance?
A. electrical energy
B. light energy
C. mechanical energy
D. thermal energy
Answer:
D. Thermal Energy
Explanation:
Investigate the ways architects and engineers increase the efficiency of climate control systems.
Answer:
sense we see what gases can do to earth we have made progress to keep it habitable buy solar panels water energy and using as lil of waste material as possible
Explanation:
NEED HELP!!!!!
Why would oxygen levels make a difference in athletic performance?
A.
Muscles need oxygen to function well.
B.
It is just one biometric that is studied.
C.
Oxygen is important for everyone, not just athletes.
D.
Athletes require less oxygen than those who are less active.
Oxygen levels make a difference in athletic performance because muscles need oxygen to function well. Thus, the correct option for this question is A.
What are the characteristics through which athletic performance depends?The characteristics through which athletic performance depends are as follows:
Muscle strength.Cardiovascular endurance.Climatic conditions.Competency of recovery. Conscientiousness and openness.The level of oxygen in the muscle cells translates to greater energy production and improved performance. This is only possible when the increased quantity of blood allows more red fluid to reach athletes' muscles during exercise. The transportation of more blood means the level of oxygen is significantly good. This process makes energy-rich situations for the athlete to keep their performance to the top level.
Therefore, oxygen levels make a difference in athletic performance because muscles need oxygen to function well. Thus, the correct option for this question is A.
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A box has a force of 9000 N pulling to the right and 7000 N pulling to the left, Determine the resultant forces on the box
Answer:The horizontal forces can be summed as vectors in order to determine the net force. Fnet = ∑Fx = 5.20 N, right - 3.29 N, left = 1.91 N, right.
Explanation:
by how much would 1500j of heat energy raise the temperature of 0.50kg of aluminum
pls what is the specific heat capacity of water
A 50 kg ball is sitting on a table and is pushed to the right with a force of 200 N what is the weight of this ball
Answer:
4 m/s^2
Explanation:
F = ma
a = F/m
a = 200/50
a = 4 m/s^2
What is the purpose of using conductors in a circuit?
Answer:
Conductors and insulators are both important in the field of electronics. Electrical conductors allow electric current to flow easily because of the make up of their atoms. In a conductor, the outer electrons of the atom are loosely bound and can freely move through the material when an electric charge is applied.
Explanation:
PLEASE HELP DUE TODAY !!!
How does increasing the frequency of a wave affect the wavelength of the wave?
How does increasing the wavelength of a wave affect the frequency of a wave?
Answer:
How does increasing the frequency of a wave affect the wavelength of the wave?
The frequency is defined as the number of full wavelengths that may be completed in a given unit of time (f). The frequency (F) and energy (E) of a wavelength drop as the wavelength's size rises. As a result of these calculations, you may have noticed that the wavelength grows shorter as the frequency rises. The wavelength increases in length in proportion to the reduction in frequency.
Explanation:
How does increasing the wavelength of a wave affect the frequency of a wave?
The frequency (F) and energy (E) of a wavelength drop as the wavelength's size rises. As a result of these calculations, you may have noticed that the wavelength grows shorter as the frequency rises. The wavelength increases in length in proportion to the reduction in frequency.
Answer:
This isnt exactly an answer, but it should help if you need a general grip on the subject. Its simply an example or model.
Explanation:
It is sort of like being on the road. If you want to get to your destination, you have to follow the correct path or paths, meaning you dont want to steer out of lane because if you do it will be even harder to get where you were going. So as long as you can get a general direction of the frequency you can narrow it down you can find where you are going.
If a 6.0 kg bowling ball is rolled with a velocity of 3.5 m/s, what is the momentum of the ball? Show Work
Answer: 21 kgm/s
Explanation:
momentum
p=mv (mass*velocity )
m= 6kg
v=3.5 m/s
6*3.5= 21 kgm/s
As you clear the sidewalk with a leaf blower, the blower pushes you away from the leaves. What is pushing on the blower so that it can push on you
So we want to find what causes the blower to push on you when you use it.
We will see that this happens because of Newton's third law, and the thing that is pushing the blower is the air itself.
Well, Newton's third law says that when two objects interact, they exert equal and opposite forces on each other.
In this case, the leaf blower is interacting with the air, pushing it so it can push away the leaves. But by this law, the air also exerts a force on the leaf blower (we have the interaction leaf blower- air) so the air is what "pushes" the blower, and because you are holding it, you feel that push.
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How is energy transferred between molecules?
(explain it like a middle schooler because my teacher is gonna expect something)
Answer:
Through vibrations between the molecules(amplify?)
Explanation:
14 Select the correct answer. Which particles make up the nucleus of an atom? OA protons and electrons OB. neutrons and electrons O C. protons only OD. protons and neutrons СЕ. neutrons only
Answer:
The right answer is. protons and neutrons
Why does the rotation curve of a spiral galaxy increase with increasing distance near the galaxy's center
Answer: Because the encircled mass increases so fast that gravity increases with the radius.
Explanation:
An object of mass m and another object of mass 2m are each forced to move along a circle of radius 1.0 m at a constant speed of 1.0 m/s. The magnitudes of their accelerations are:
The magnitude of centripetal acceleration of the both bodies is 1 m/s^2.
The centripetal acceleration is given by the relation;
a = v^2/r
v = velocity
r = radius of the circular
We have the following information;
v = 1.0 m/s
r = 1.0 m
In each case, the magnitude of centripetal acceleration is;
a = 1^2/1 = 1 m/s^2
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true or false Positivley charged atoms contain more protons.
Answer:
false
Explanation:
Hope this helps
How much electrical energy is used by a 75 W laptop that is operating for 12
minutes?
O A. 27,000 J
B. 108,000 J
C. 900 J
O D. 54,000 J
Answer:
54,000 J
Explanation:
Given,
Power ( P ) = 75 W
Time ( t ) = 12 minutes
To find : Electrical energy ( E ) = ?
t = 12 minutes
= 12 x 60
t = 720 seconds
Formula : -
E = Pt
E = 75 x 720
E = 54,000 J
Therefore,
54,000 J is the electrical energy is used by a 75 W laptop that is operating for 12 minutes.
A boat does 500 joules of work as travels 50 meters in 5 second how much power was produced?
A-2500 watts
B-5000 watts
C-250 watts
D-500 watts
Answer:
Explanation:
A 2,500 watts
Zorn and Porsha are ice skating. Porsha has a mass of 60 kg, and Zorn has a mass of 40 kg. As they face each
other, Porsha pushes off Zorn with a force of 168 N. Assume the friction between the skaters and the ice is
negligible.
Assuming the friction between the skaters and the ice is negligible, the magnitude of Porsha's acceleration is 2.8m/s².
Missing part of the question: determine the magnitude of Porsha's acceleration.
Given the data in the question;
Mass of Porsha; [tex]m_{porsha} = 60kg[/tex]Mass of Zorn; [tex]m_{zorn} = 40kg[/tex]Force of Porsha push; [tex]F_{porsha} = 168N[/tex]Magnitude of Porsha's acceleration; [tex]a = \ ?[/tex]
To determine the magnitude of Porsha's acceleration, we use Newton's second laws of motion:
[tex]F = m*a[/tex]
Where m is the mass of the object and a is the acceleration.
We substitute the mass of Porsha and the force he used into the equation
[tex]168N = 60kg * a\\\\a = \frac{168kg.m/s^2}{60kg}\\\\a = 2.8m/s^2[/tex]
Therefore, assuming the friction between the skaters and the ice is negligible, the magnitude of Porsha's acceleration is 2.8m/s².
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The frequency of the middle d note on a piano is 293. 66 hz. What is the wavelength of this note in centimeters? the speed of sound in air is 343. 06 m/s.
Answer:
98
Explanation:
From=
