Answer:
Weight x Distance is usually shown in graph form just multiply these to find the Force. W x D = F
Other formula's.
Finding Kinetic energy with given weight 10kg
In classical mechanics, kinetic energy (KE) is equal to half of an object's mass (1/2*m) multiplied by the velocity squared. For example, if a an object with a mass of 10 kg (m = 10 kg) is moving at a velocity of 5 meters per second (v = 5 m/s), the kinetic energy is equal to 125 Joules, or (1/2 * 10 kg) * 5 m/s 2.
Quan sát sóng dừng trên sợi dây dài 60cm cố định hai đầu, thấy có 3 nút (bao gồm cả hai
nút hai đầu) và 2 bụng. Bước sóng của sóng lan truyền trên sợi dây là:
A. 30cm. B. 40cm. C. 20cm. D. 60cm.
Answer:
Quan sát sóng dừng trên sợi dây dài 60cm cố định hai đầu, thấy có 3 nút (bao gồm cả hai
nút hai đầu) và 2 bụng. Bước sóng của sóng lan truyền trên sợi dây là:
two pendula are released from rest at the same height h above their lowest points. how do the maximum velocities of the two pendulums compare? note that pendulum 2 has a string with length twice that of pendulum 1.
The simple pendulum concept and rotational kinematics relationships allow finding the result for the velocity relationship
The shortest pendulum (w₁) has more speed than the longest pendulum (w₂)w₁ = [tex]\sqrt{2}[/tex] w₂
The simple harmonic movement is a periodic movement where the restoring force is proportional to the elongation, in the case of the simple pendulum it is fulfilled for angles less than 10º. The expression for motion is
θ = θ₀ cos ωt
ω² = g / l
the angular velocity is defined by
w = [tex]\frac{d \theta}{dt}[/tex]
w = - θ₀ ω sin ωt
Where θ₀ is the initial angle or amplitude, w is the angular velocity, t the time, g the acceleration of gravity and l the length of the pendulum
Let's find the angular velocity for each pendulum
ω ₁ = [tex]\sqrt{ \frac{g}{l_1} }[/tex]
Indicate that the second pendulum length is
l₂ = 2 l₁
ω₂ = [tex]\sqrt{\frac{g}{2l_1} }[/tex]
the pendulum speed is maximum at the lowest point of the trajectory that occurs when the sine function has its maximum value
w = θ₀ω
Suppose that the two pendulums are released with the same initial angle
Pendulum 1
w₁ = θ₀ [tex]\sqrt{\frac{g}{l_1} }[/tex]
Pendulum 2
w₂ = θ₀ [tex]\sqrt{\frac{g}{2l_1} }[/tex]
We look for the relationship between the two speeds
[tex]\frac{w_1}{w_2} = \sqrt{2}[/tex]
In conclusion, using the simple pendulum concept and the rotational kinematics relations we can find the result for the velocity relation
The shortest pendulum (w₁) has more speed than the longest pendulum (w₂)
w₁ = √2 w₂
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a battery is connected to a resistor. as charge flows, the chemical energy of the battery is dissipated as _________.
As charge flows, the chemical energy of the battery is dissipated as the time of charge flow increases.
Electric power is defined as the rate at which electric energy is dissipated.
The power of the current flowing through the circuit is calculated as follows;
P = IV
P = I x IR
P = I²R
where;
P is the power dissipatedI is the current flowing in the circuitR is the resistance of the circuitThe electric energy is given as;
E = Pt
E = I²Rt
Thus, we can conclude that as charge flows, the chemical energy of the battery is dissipated as the time of charge flow increases.
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I'm doing a science fair It is are fingerprints inherited. I need the independent variable and dependent variable and the control plz help
Answer:
The Independent Variable is the recorded fingerprint pattern.
The Dependent Variable is the shape of the fingerprint pattern.
The Control Group does not receive the Variable that you are testing
Explanation:
Calculate the kinetic energy required to drive a fluid of density 4 x 10^-3 kg/m³ through a vertical pipe of height 100m maintained at a pressure of 0.02 N/m² and 0.08 N/m² at each end respectively.
Bernoulli's equation allows to find the result for the change of the kinetic energy of the fluid in the pipe is:
Kinetic energy change is: ΔK = 3.98 J
Fluid mechanics studies the movement of liquid and gases through pipes, for this it uses the Bernoulli's equation, which is the work and energy relationship for fluids.
P₂ + ½ ρ v₂² + ρ g y₂ = P₁ + ½ ρ v₁² + ρ g y₁
Where the subscripts 1 and 2 are the two points of interest, P is the pressure, ρ the density, v the velocity and y the height.
The expression of kinetic energy in fluids is:
K = ½ ρ v²
Let's substitute
K₂ - K₁ = P₁-P₂ + ρ g (y₁-y₂)
ΔK = P₁-P₂ + rho g (y₁-y₂)
Indicates the density of the fluid is 4 10⁻³ km / m³, there is a height difference of Δy = 100 m and the pressure of 0.08 Pa and 0.02 Pa.
ΔK = (0.08 -0.02) + 4 10⁻³ 9.8 100
ΔK = 0.06 + 3.92 ΔK = 3.98 J
In conclusion using Bernoulli's equation we can find the result for the change in the kinetic energy of the fluid in the pipe is:
ΔK = 3.98 J
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A wooden log has to be carried by two people. If one of them is strong and another weak, how will they carry the log? Show with a diagram and also give reason.
Answer:
Unbalanced forces
When two forces acting on an object are not equal in size, we say that they are unbalanced forces. The overall force acting on the object is called the resultant force. If the forces are balanced, the resultant force is zero.
If the forces on an object are unbalanced, this is what happens:
a stationary object starts to move in the direction of the resultant force
a moving object changes speed and/or direction in the direction of the resultant force
In the example below, the resultant force is the difference between the two forces:
100 – 60 = 40 N (to the right)
Using moments
A see-saw will balance if the moments on each side of the pivot are equal. This is why you might have to adjust your position on a see-saw if you are a different weight from the person on the other end.
If a nut is difficult to undo with a short spanner, a longer spanner will help. This is because there will be a bigger moment on the nut, when the same force is applied further from the pivot.
Using the same principle you can increase the moment applied by a lever or a crowbar, and this can help you move heavy objects more easily.
The input work on pulley system is 75J. If the pulley system is 84 percent efficient, then what is the output work from the pulley system?
Answer: 63 J
Explanation: The effiency () of a machine is given by the ratio between the output work and the input work :
Where:
Isolating :
Finally:
which of these traits is NOT found in invertebrates
a. antennae
b. eyes
c. endoskeleton
d. none of them
Answer:
D) None of the Above
I hope this is correct; Let me know if it is in the comments.
A 4.50 kg block is suspended from the end of a light vertical rope. A time-dependent force is applied to the upper end of the rope, and the box moves upward with a velocity magnitude that varies in time according to v(t)=(2.00m/s2)t+(0.600m/s3)t2.
What is the tension of the rope when the velocity of the box is 8.00 m/s?
Answer:
Answer:
T = 74.3N
Explanation:
We are given;
v(t) = (2.00m/s²)t+(0.600m/s³)t²
So, when v = 9 m/s;
9 = 2t + 0.6t²
0.6t² + 2t - 9 = 0
Solving this quadratic equation,
t = -5.88 or 2.55
We'll pick t = 2.55 s
Now, kinematic acceleration will be the derivative of the acceleration.
Thus, a = dv/dt = 2 + 1.2t
So, acceleration at that time t = 2.55s is; a = 2 + 1.2(2.55) = 5.06 m/s²
Since the rope is subject to both acceleration and gravity, Tension is;
T = mg + ma
T = m(g + a)
T = 5(9.8 + 5.06)
T = 74.3N
Explanation:
define centripetal force
Answer:
Centripetal force is a force that acts on a body moving ion a circular path and is directed toward the center around which the body is moving.
which has greater value, a newton of gold on earth or a newton of gold on the moon?
One newton of gold on the moon would have a greater value than a newton of gold on earth because the magnitude of the acceleration due to gravity on the moon is smaller than the gravity on the earth .
What is gravity ?It can be defined as the force by which a body attracts another body toward its center as the result of the gravitational pull of one body and another .
As given in the problem, we have to find out which has greater value, a newton of gold on earth or a newton of gold on the moon .
A newton of gold would be worth more on the moon than it would be on earth since the moon experiences a smaller acceleration from gravity than the earth does .
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a car takes off from rest and covers a distance of 80m on a straight road in 10s.calculate the magnitude of its acceleration
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Here's the solution :
Let's find the final velocity :
[tex] \dfrac{displacement}{time} [/tex][tex] \dfrac{80}{10} [/tex][tex]8 \: \: ms {}^{ - 1} [/tex]Initial velocity (u) = 0 (cuz it started from rest)
Final velocity (v) = 8 m/s
Time taken (t) = 10 sec
now, we know that :
[tex]acceleration = \dfrac{v - u}{t} [/tex][tex] \dfrac{8 - 0}{10} [/tex][tex] \dfrac{8}{10} [/tex][tex]0.8 \: \: m {s}^{ - 2} [/tex]Acceleration = 0.8 m/s²
Which is a vector? Displacement Distance Speed None
Answer:
A vector is an object that has both a magnitude and a direction. Geometrically, we can picture a vector as a directed line segment, whose length is the magnitude of the vector and with an arrow indicating the direction.
Explanation:
brainliest plz
Answer:
The correct answer is
Displacement.
As Displacement has both magnitude and direction it is Vector.
Hope it helps.
Plz mark me brainest
what evidence is there that sound Travels through gases
Answer:
solid
Explanation:
because the molecule of solid is farest than gas
When you stand on the floor, the force of your body pushing down on the floor is
A. Matched by the floor pushing up on your body.
B. Less than the reaction force applied by the floor.
C. A reaction to the floor pushing up.
D. None of the above.
Answer:
D. None of the above
if a car is accelerating downhill under a net force of 3674 N, what additional force would cause the car to have a constant velocity?
Hi there!
For an object to have a constant velocity, the SUM of the forces must equal 0. This means that the forces are balanced.
When a car is accelerating downhill, it is experiencing a force due to gravity of F = MgsinФ.
In order to balance the forces, there must be an equal and OPPOSITE force acting on the object. This would be a force of kinetic friction.
Thus:
∑F = -F (Kinetic Friction) + MgsinФ
0 = -F (Kinetic Friction) + MgsinФ
MgsinФ = F (Kinetic Friction)
Thus, the force of Kinetic Friction = -3674 N
(Negative indicates in the opposite direction)
what happens to the image when u make the hole bigger in a pinhole camera?
Answer:
more light enters and disturbs the formation of the image.
An object is placed 10 cm in front of a concave lens. If the image formed at a distance of 5 cm from concave lens, calculate the focal length of the lens?
Answer:
I would be 5 centimeters I think
Câu 5. Một vật dao động điều hòa với phương trình x = 20cos(10pit +pi/2) (cm). Xác định thời điểm đầu tiên vật đi qua vị trí có li độ x = 5 cm theo chiều âm kể từ thời điểm t = 0.
Answer:
Explanation:lớp 12 à
Two facts about Saturns largest moon
ruby is in miami an texts her cousin, Xavier, in Seattel. her clock says 1:00 am
Answer:
so its 10pm in seattle
Explanation:
Describe what happens when there is no Friction and you stop pushing on an object?
I will give Brainliest to the first person :)
Answer: See below
Explanation: Considering no friction it will continue to slide until an outside force acts upon it such as hitting something or falling off something.
is sliding or static friction greater in magnitude?
Answer: static friction
Explanation:
During sliding, contact points do not get enough time to get interlocked properly. Therefore, less friction. But, when the object is at rest, the surfaces interlock well, therefore friction is more. This explains why sliding friction is less than static friction.
Is CO2 a metal or nonmetal
non metal
co2 is a compound made up of carbon and oxygen which are both non metals, so co2 is a nonmetal. :)
Answer:
non-metal
Carbon dioxide, CO 2 - colourless gas with no odour
In a ……………………………….. wave, the particles of the medium vibrate in a direction parallel
to the direction which the wave moves.
1. Energy
2. Medium
3.Transverse
4.Longitudinal
Answer:
4 longitudinal waves
Explanation:
have a beautiful day ahead
why do you think a force is generated when a spring is stretched or compressed
Answer:
When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F = -kx in a direction towards its equilibrium position. The force a spring exerts is a restoring force, it acts to restore the spring to its equilibrium length.
Explanation:
Hope This Helps!
A force is generated when a spring is stretched or compressed due to change in position against its normal state.
How force is generated?When a spring is stretched or compressed, so that its length changes by an amount x from its original length. After releasing it, it exerts a force F = -kx in a direction towards its original position. The force a spring exerts is a restoring force, it acts to restore the spring to its equilibrium length.
In conclusion, a force is generated when a spring is stretched or compressed due to change in position against its normal state.
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What is an accurate description of what occurs when a log burns
Answer:
a. energy is created as the log burns b. the compounds that make up the log are converted into fire, heat, and energy. c. as the log burns, the nuclear binding energy of the molecules in the log is released. the nuclear binding energy is transformed into the light and heat of the fire. d. the molecules present in the log are transformed into molecules that contain less energy than the original molecules. the energy difference is the heat of the fire?Explanation:
someone help me with this physics question!!
Full Answer in Image
a.) Ans; If an object is projected upwards in a perfectly vertical direction, then it will slow down as it rises upward. The instant at which it reaches the peak of its trajectory, its velocity is 0 m/s
Hiệu điện thế U=10 V được đặc vào giữ hai đầu một điện trở có giá trị R=25 Q cường độ dòng điện trở bằng bao nhiêu
Answer:
Hiệu điện thế U=10 V được đặc vào giữ hai đầu một điện trở có giá trị R=25 Q cường độ dòng điện trở bằng bao nhiêu
help asap physics
a chemist is doing an experiment on water, he set up the apparatus as shown in the image, placing 2 electrical wires connected to the power supply in water. how are the electrical charges moving in this circuit system?
will give brainliest to correct answer
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The Correct choice is :
A) Because water is a good conductor of electricity.