Answer:
as we know Speed=Distance÷Time
Distance=Speed×Time
Velocity=Displacement÷Time
Displacement=Velocity×Time
u haven't given the speed and all give it and I will tell the answer
A wave with a wavelength of 2m has a frequency of 10Hz. What is its speed?
Answer:
Below
Explanation:
To find the wave speed of a wave you can use this formula :
wavespeed (v) = (frequency) x (wavelength λ)
Plug in our values :
v = (10Hz) x (2m)
v = 20 m/s
Hope this helps!
Now, seriously !
There's a stream of objects flowing past you.
Ten of them pass you every second.
Each one is 2m long.
Don't you think you can figure out how fast they're flowing ?
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 .
To learn more about gravity here , refer to the link given below ;
brainly.com/question/4014727
#SPJ5
Can someone help me with this? (The answer marked in red text is a incorrect answer)
I think the answer is A
Explanation:
the bus has more kg than the car so. the bus need to stop first
CAN YOU PLS CHECK IF ITS CORRECT I'LL MARK YOU BRAINLIST
i think it looks good
yea it correct
BTW yw if it's right
Answer:
-4000
Explanation:
jptjpdjsjsjsfbsjjdbabdjzjwjdjadjzjejxjaA
A lemon drops from a tree and falls to the ground 3.5 meters below. Determine:
a. How much time does it take for the lemon to reach the ground?
b. What is the lemon´s velocity just before it hits the ground (Vf)?
Please do ( Test your understanding)
Answer:
Just convert the answers down, plug in the numbers and move the decimal to where it needs to be equal to.
Answer:
I have already given answer
Explanation:
see in upper comment there is my answer :)
explain how the composition of a star that will form a billon years in the future will differ the composition of our sun.
Answer:
Explanation:
Basically the star slowly burns its hydrogen into Helium. Depending on the mass, the star will have a turbulent core where the Helium will be fully mixed or a radiative core where the helium will settle at the centre (remember it's heavier than Hydrogen). The second case is what happens in the Sun.
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.
5) Match the following.
1) workstation
2) Network interface card
3) hub
4) server
Hope this helped you- have a good day bro cya)
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
Learn more here: brainly.com/question/24159297
2.) Explain why the starting angle doesnt impact the time it takes the pendulum to swing back and forth?
The starting angle θθ of a pendulum does not affect its period for θ<<1θ<<1. At higher angles, however, the period TT increases with increasing θθ.
The relation between TT and θθ can be derived by solving the equation of motion of the simple pendulum (from F=ma)
−gsinθ=lθ¨−gainθ=lθ¨
For small angles, θ≪1,θ≪1, and hence sinθ≈θsinθ≈θ. Hence,
θ¨=−glθθ¨=−glθ
This second-order differential equation can be solved to get θ=θ0cos(ωt),ω=gl−−√θ=θ0cos(ωt),ω=gl. The period is thus T=2πω=2πlg−−√T=2πω=2πlg, which is independent of the starting angle θ0θ0.
For large angles, however, the above derivation is invalid. Without going into the derivation, the general expression of the period is T=2πlg−−√(1+θ2016+...)T=2πlg(1+θ0216+...). At large angles, the θ2016θ0216 term starts to grow big and cause
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:
what is photoelectric effect
[tex]{\underbrace{\sf{PHOTO-ELECTRIC~EFFECT }}}[/tex]
The photoelectric effect is a phenomenon in which electrons are ejected from the surface of a metal when light is incident on it. These ejected electrons are called photoelectrons. It is important to note that the emission of photoelectrons and the kinetic energy of the ejected photoelectrons is dependent on the frequency of the light that is incident on the metal’s surface.
Answer:
Photoelectric effect is the phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.
A driver without a seat belt getting thrown from the car in a collision is an example of Newton’s?
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
Please help pleeeeeeaaaassseeee help
During rubbing, [tex]^E^L^E^C^T^R^O^N^S[/tex] are transferred between the woolen cloth and the balloon.
Hope this helps!
[tex]GraceRosalia[/tex] here to help
1. A net force of 15 N is applied to a cart with a mass of 2.1 kg.
a. What is the acceleration of the cart?
b. How long will it take the cart to travel 2.8 m, starting from rest?
Answer:
acceleration=force*mass
a=fm
a=15*2.1
a=31.5
acceleration is 31.5
hope it helps
MY PAPER IS DUE IN AN HOUR!!!
Your challenge- Write a paper on how to build, construct, and engineer a faster roller coaster. You essay must contain 5 paragraphs minimum. Each paragraph must be 3 sentences minimum.
Potential energy, Kinetic energy, Thermal energy and friction, speed, velocity, and acceleration, and the law of conservation of energy must be the main ideas of your paragraphs
Answer:
right about everything real life and doing or you love doing
Explanation:
I did the same thing I got a hundred on it
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.
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:
pls an answer!
fast!!
Answer:
letter C
Explanation:
A lamp is labelled '230 V, 100 W'. How many joules of electrical energy is changed to thermal energy and light if the lamp is switched on for 2 hours?
Given;
V = 230V
Power, P = 100W
time, t = 2hrs = 7200s
from,
P = IV
and Energy, E= Pt
E = 100*7200
E = 720000 Joules
E = 720KJ
Answer:
Formula E(J) = P(W) × t(s)
3600 Seconds in an hour
7200 seconds in two hours.
watts = 100
100 x 7200 = 720000
Explanation:
Watts to joules calculation
The energy E in joules (J) is equal to the power P in watts (W), times the time period t in seconds (s):
E(J) = P(W) × t(s)
Energy cannot be created or destroyed, only converted from one form to another. These conversions can be shown in Sankey diagrams. Efficiency is a measure of how much useful energy is converted. Attachment 1
Modern energy-saving lamps and LEDs (light-emitting diodes) work in a different way. They transfer a greater proportion of electrical energy as light energy. Attachment 2
From the diagram, you can see that much less electrical energy is transferred, or 'wasted', as heat energy from the energy-saving lamp. It's more efficient than the filament lamp.
Calculating efficiency
The efficiency of a device, such as a lamp, can be calculated:
efficiency = useful energy out ÷ total energy in (for a decimal efficiency)
or
efficiency = (useful energy out ÷ total energy in) × 100 (for a percentage efficiency)
The efficiency of the filament lamp is 10 ÷ 100 = 0.10 (or 10%). This means that 10 per cent of the electrical energy supplied is transferred as light energy (90 per cent is transferred as heat energy).
The efficiency of the energy-saving lamp is 75 ÷ 100 = 0.75 (or 75 per cent). This means that 75 per cent of the electrical energy supplied is transferred as light energy (25 per cent is transferred as heat energy).
Note that the efficiency of a device will always be less than 100 per cent. Occasionally the power is shown in W instead of the energy in J. The equations are the same – just substitute power for energy:
efficiency = useful power out ÷ total power in (for a decimal efficiency)
or
efficiency = (useful power out ÷ total power in) × 100 (for a percentage efficiency)
This is the Sankey diagram for a typical energy-saving lamp:
you can find the resistance using this formula
R = V ÷ I
where; V is the potential difference in volts, V
I is the current in amperes (amps), A
R is the resistance in ohms, Ω
what evidence is there that sound Travels through gases
Answer:
solid
Explanation:
because the molecule of solid is farest than gas
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.
.
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Allison drove 150 miles for 2.5 hours.
Benjamin drove for 2.73 hours and traveled 175 miles.
• Lily drove 160 miles for 2.58 hours.
• George drove for 2.46 hours and traveled 155 miles.
Which person drove at the fastest constant speed?
The formula for calculating speed: Speed = Distance/Time
Answer:
Benjamin was fastest
Explanation:
Allison- 150/2.5= 60mph
Benjamin- 175/2.73= 64.1
Lily- 160/2.58= 62.01
George- 155/2.46= 63.008
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
actiong-reaction of the bat hits the ball.
Answer:
according to newtons third law ,the force exerted.by the bat hitting the ball will be equal in magnitude . but opposite in direction of the force the ball exerts on the batEveryday examples of buoyancy force
Answer: A person with a life vest floating on water, Ship floating on the ocean, Helium balloon rising in the air, etc.
Explanation: Cause I said so uwu
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
calculating velocity: How long would it take for a person to sprint from the 0m line to the 100m line if they are traveling forward at 6m/s?
-
Please do show me how you solved it
Answer:
16.7s
2x10^1 s (if you need a 1 significant digit answer)
Explanation:
The formula for average velocity is
Vavg = Δd/Δt
Fill in the known values
6m/s = 100m/Δt
Rearrange the equation
Δt = 100m/6m/s
Δt = 16.7s
note: this answer assumes that the person travels at a constant 6m/s (the person does not slow down or speed up)