Answer:
The kinetic energy of an object is directly proportional to the square of its speed. That means that for a twofold increase in speed, the kinetic energy will increase by a factor of four.
Found it on the internet
Explanation:
Hope this helps dude
which motion is caused when two opposite force acting perpendicular to an axis.
Answer:
fiction
Explanation:
When two opposite forces act perpendicular to an axis, it causes rotational motion or torque.
What is the difference between torque and a couple?Torque and couple are both related to rotational motion and are often used interchangeably, but they refer to slightly different concepts.
Torque is a measure of the force that causes an object to rotate around an axis or pivot point.
It is equal to the force applied multiplied by the perpendicular distance between the axis and the line of action of the force. Torque is a vector quantity, meaning it has both magnitude and direction. Its unit of measurement is Newton-meters (Nm) or foot-pounds (ft-lbs) in the English system.
A couple, on the other hand, is a pair of equal and opposite forces that act on a body but do not cause it to translate. Instead, they create a pure rotational motion.
A couple generates torque, but unlike a single force, it doesn't have a line of action or a specific point of application. Instead, a couple is characterized by its magnitude and the distance between the forces. Couples are often used in mechanics to model rotational systems and analyze the behavior of rotating bodies.
Torque is the measure of the force that causes rotational motion, while a couple is a pair of forces that create pure rotational motion without causing any translation.
Therefore, If two opposite forces act perpendicular to an axis, it causes rotational motion or torque.
To learn more about torque click:
https://brainly.com/question/17816858
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Radiation heat transfer can be due to what?
Answer: Heat transfer due to emission of electromagnetic waves is known as thermal radiation.
Explanation: Heat transfer through radiation takes place in form of electromagnetic waves mainly in the infrared region. Radiation emitted by a body is a consequence of thermal agitation of its composing molecules.
Answer: Thermal Radiation is the right answer.
Explanation:
Can anyone tell me why I got this wrong?
Two children are fighting over a 2 kg toy. One child pulls right with a 5 N force and another pulls left with a 7.5 N force. How long will it take the toy to reach a speed of 1.0 m/s in this “tug of war”?
my answer = 1.25 s
Answer:
0.8sec
Explanation:
Σf= 7.5-5= 2.5 N to the left
Σf=m*a=>2.5=2a=>a=1.25 m/s²
Lets say that the speed is 1m/s
a=speed-0/x=>x=1/1.25=>x=0.8
Hence the time will be 0.8sec
What is the kinetic energy of a 25 kg object moving at a velocity of 4 m/s?
Thus Kinetic energy of the object is 200J when mass is 25 kg and velocity is 4 m/s.
Sunlight is a form of electromagnetic energy.
Please select the best answer from the choices provided
T
F
Answer: True
Explanation: Hope this helps :)
what is this simple machines name
Answer:
bottle opener and door knob
Explanation:
Answer:
bottle opener
door handle
Use the term chemical bond in a complete sentence
joe loves joe so yes
Answer:
noice.
Explanation:
thanks for points.... idrk what im supposed to do
----------------------------------------------------------------------------------------------------------------
yeah same.
The parking brake on a 1200kg automobile has broken, and the vehicle has reached a momentum of 7800kg.M/s. What is the velocity of the vehicle?
The pressure was 50pa ,when a perpendicular force was applied on a surface area of 2.5m2.what is the force applied??????
Answer:
Force = 125 Newton
Explanation:
Given the following data;
Pressure = 50 pa
Area = 2.5 m²
To find the force applied;
Force = pressure * area
Substituting into the formula, we have;
Force = 50 * 2.5
Force = 125 Newton
Which element is represented by the model of the atom above?
Carbon is the element modeled
Choose the word that best completes each sentence.
Plants are
. They make their own food.
Animals are
. They consume other organisms for food.
If a car is traveling 35 m/s for 200 seconds, how far will the car travel?
Answer:
7.14285714286
Explanation:
The image formed by a plane mirror are always of ....... size.
Answer:
same
step by step explanation:
Calculate the power of a crane required to lift 36kg of iron per hour from a mine 200 m deep,
(Take g = 10m/s2 ).
hope this helps you !
4. What is the best estimate of the frequency of the wave shown below?
O A. 0.40 Hz
OB. 0.85 Hz
O C. 1.25 Hz
O D. 2.50 Hz
Answer:
The answer is "Option D"
Explanation:
Please find the graph file in the attached file.
Using formula:
[tex]\to v= \rho \lambda \\\\\ \to \lambda= 130 \cm \\\\ \to v= 335 \frac{cm}{s}\\\\ \to \rho= \frac{v}{\lambda} \\\\[/tex]
[tex]=\frac{335}{130} \\\\ = 2.57 \approx 2.50 \ Hz[/tex]
help me pls. will give brainliest
Answer:
B: Relay
Explanation:
Out of all the options, the only device that relies upon the magnetic field of an electric current.
The principle relies upon the principle of electro magnetic attraction whereby when the circuit detects a faulty current, it makes the electromagnetic field to become energized which in turn produces the temporary magnetic field. This magnetic field then moves the relay armature which is used in opening or closing the connections.
What is the kinetic energy of a 2.7kg book
moving at 3.5m/s?
Give your answer rounded to one place after the
decimal, no units.
!!
How would the force of gravity between two objects change if the mass of
each object were doubled?
A. The force between them would be 2 times larger than with the
initial masses.
B. The force between them would be 1/4 the force with the initial
separation.
C. The force between them would be 4 times larger than with the
initial masses.
D. The force between them would be 1/2 the force with the initial
separation
Answer:
Option C. The force between them would be 4 times larger than with the
initial masses.
Explanation:
To know which option is correct, we shall determine the force of attraction between the two masses when their masses are doubled. This can be obtained as follow:
From:
F = GMₐM₆/ r²
Keeping G/r² constant, we have
F₁ = MₐM₆
Let the initial mass of both objects to be m
F₁ = MₐM₆
F₁ = m × m
F₁ = m²
Next, let the masses of both objects doubles i.e 2m
F₂ = MₐM₆
F₂ = 2m × 2m
F₂ = 4m²
Compare the initial and final force
Initial force (F₁) = m²
Final (F₂) = 4m²
F₂ / F₁ = 4m² / m²
F₂ / F₁ = 4
F₂ = 4F₁ = 4m²
From the above illustrations, we can see that when the mass of both objects doubles, the force between them would be 4 times larger than with the
initial masses.
Thus, option C gives the correct answer to the question.
Question 2
What measurements are needed to calculate your BMI?
A. Weight and shoe size
B. Height and weight
C. heart and breathing rate per minute
D. core temperature and height
Answer:
B
Explanation:
Two dogs are pulling on a chew toy. One dog pulls the chew toy with 64 N [E] and
the other pulls the chew toy with 31 N [W]. Determine the ACCELERATION of the 3
kg chew toy.
Answer:
Eastward, at 11 m/s^2
Explanation:
64N-31N=unbalanced force of 33N
F=ma
33N=(3kg)a
a=11m/s^2 to the East
A zebra drinks from a watering hole and is ambushed by a crocodile. What's more important and why: the zebra having a high maximum speed or a high acceleration?
Answer:
before this type of attack, high acceleration is the most important thing.
Explanation:
As the zebra is ambushed by the crocodile the most important thing is a quick reaction, in this attack the most likely is that the crocodile is in the water so it cannot run after the zebra.
Consequently, before this type of attack, high acceleration is the most important thing.
who invented Pascal??
1.
X, Y and Z are the weights of three objects
suspended by pulleys as shown.
Assuming the pulleys in this system are frictionless
and weightless and that Z= 12 N, what are the
values of X and Y?
24°
50°
Х
Y
Z
Answer:
The weight of the object X is approximately 3.262 N (Acting downwards)
The weight of the object Y is approximately 8.733 N (Acting downwards)
Explanation:
The question can be answered based on the principle of equilibrium of forces
The given parameters are;
The weight of Z = 12 N (Acting downwards)
The weight of the pulleys = Negligible
From the diagram;
The tension in the in the string attached to object Z = The weight of object Z = 12 N
The tension in the in the string attached to object X = The weight of the object X
The tension in the in the string attached to object Y = The weight of the object Y
Given that the forces are in equilibrium, we have;
The sum of vertical forces acting at a point, [tex]\Sigma F_y[/tex] = 0
Therefore;
[tex]T_{1y} + T_{2y} + T_{3y} = 0[/tex]
[tex]T_{1y} = -( T_{2y} + T_{3y} )[/tex]
Where;
[tex]T_{1y}[/tex] = The weight of object Z = 12 N
[tex]T_{1y}[/tex] = 12 N
[tex]T_{2y}[/tex] = The vertical component of tension, T₂ = T₂ × sin(24°)
∴ [tex]T_{2y}[/tex] = T₂ × sin(156°)
Similarly;
[tex]T_{3y}[/tex] = T₃ × sin(50°)
From [tex]T_{1y} = -( T_{2y} + T_{3y} )[/tex], and [tex]T_{1y}[/tex] = 12 N, we have;
12 N = -(T₂ × sin(156°) + T₃ × sin(50°))...(1)
Given that the forces are in equilibrium, we also have that the sum of vertical forces acting at a point, ∑Fₓ = 0
Therefore at point B, we have;
T₁ₓ + T₂ₓ + T₃ₓ = 0
The tension force, T₁, only has a vertical component, therefore;
∴ T₁ₓ = 0
∴ T₂ₓ + T₃ₓ = 0
T₂ₓ = -T₃ₓ
T₂ₓ = T₂ × cos(156°)
T₃ₓ = T₃ × cos(50°)
From T₂ₓ = -T₃ₓ, we have;
T₂ × cos(156°) = - T₃ × cos(50°)...(2)
Making T₃ the subject of equation (1) and (2) gives;
Making T₃ the subject of equation in equation (1), we get;
12 = -(T₂ × sin(156°) + T₃ × sin(50°))
∴ T₃ = (-12 - T₂ × sin(156°))/(sin(50°))
Making T₃ the subject of equation in equation (2), we get;
T₂ × cos(156°) = - T₃ × cos(50°)
∴ T₃ = T₂ × cos(156°)/(-cos(50°))
Equating both values of T₃ gives;
(-12 - T₂ × sin(156°))/(sin(50°)) = T₂ × cos(156°)/(-cos(50°))
-12/(sin(50°)) = T₂ × cos(156°)/(-cos(50°)) + T₂ × sin(156°)/(sin(50°))
∴ T₂ = -12/(sin(50°))/((cos(156°)/(-cos(50°)) + sin(156°)/(sin(50°))) ≈ -8.02429905283
∴ T₂ ≈ -8.02 N
From T₃ = T₂ × cos(156°)/(-cos(50°)), we have;
T₃ = -8.02× cos(156°)/(-cos(50°)) = -11.3982199717
∴ T₃ ≈ -11.4 N
The weight of the object X = -T₂ × sin(156°)
∴ The weight of the object X ≈ -(-8.02 × sin(156°)) = 3.262 N
The weight of the object X ≈ 3.262 N (Acting downwards)
The weight of the object Y = -(T₃ × sin(50°))
∴ The weight of the object Y = -(-11.4 × sin(50°)) ≈ 8.733 N
The weight of the object Y ≈ 8.733 N (Acting downwards)
please help!!
please answer if you know any of them!
Answer:
5. 343j
Explanation:
will mark as brainlest pls help
Answer:
Explanation:
one and three seem right soo answer C
what is called the phenomenon of prolongation of sound
Answer:
It is called reverberation.
Explanation:
The phenomenon of prolongation of sound is the process in which sound produced is reflected from plane surfaces in a continuous manner, which leads to reverberation of sound waves. It can also be referred to as a condition of continuous echo production.
It occurs when sound produced get reflected from a hard plane surface, and in the process hits another surface and another reflection occurs. This continuous reflection leads to prolongation of sound.
The sound produced is heard for some specific period of time before it dies down or get absorbed finally.
True or False: if a sound wave's frequency changes, its speed stays the same
What is the ideal mechanical advantage of a ramp with a height of 3.5 and a length of 14.0 meters
Answer:
ghj
Explanation:
Sean applies a force of 100N to move a box 5 meters. How much work did he do?
Answer:
500 Joules
Explanation:
W(work)= force * distance
w = 100*5
W= 500