An increase in area of a solid when heated is called area or superficial expansivity.
our sun is a star that is fueled by a specific type of nuclear reaction. which type of nuclear reaction is this?
Answer:
the fusion of hydrogen nuclei or in other words "nuclear fusion"
Explanation:
Having a good range of motion is super important because that is what allows you to ________________.
A.
do different activities
B.
run farther
C.
lose more weight
D.
balance
Which year was pluto no longer considered a planet?.
hydraulic lift has an input cylinder 4cm indiameter and an out put cylinder 16cm in
diameter.find the force exerted by the out put pistion when aforce aforce Newton if applied to the input pistion
The force exerted by the output piston will be 20 N. The pressure exerted on the both end is equal.
What is pressure?The force applied perpendicular to the surface of an item per unit area across which that force is spread is known as pressure.
It is denoted by P. The pressure relative to the ambient pressure is known as gauge pressure.
The area of the input cylinder is found as;
A₁=πR₁²
A₁=π(2)²
A₂=4π
The area of the output cylinder is found as;
A₂=πR₂²
A₂=π(4)²
A₁=16π
The pressure exerted on the both end is equal ;]
P₁=P₂
F₁A₁=F₂A₂
80 ×4 π==F₂×16 π
F₂=20 N.
Hence,the force exerted by the output piston will be 20 N.
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what is the name of the units that we measure force in
Answer:
Newton (N)
Explanation:
Newtons are used to measure force.
As a aider how do you prepare for an emergency?
Answer:
Assess the situation quickly and calmly. Safety: check whether you or the casualty are in any danger. ...
Protect yourself and them from any danger. ...
Prevent infection between you and them. ...
Comfort and reassure. ...
Assess the casualty and give first aid treatment. ...
Arrange for help if needed
Explanation:
Can someone please answer this, ill give you brainliest Would be very appreciated.
Answer:
4.2 into the atmosphere
Explanation:
Carbon movement into atmosphere :
(8.3 ± 0.4) + (1.0 ± 0.5)Let's avoid the variability 8.3 + 1.09.3Carbon movement in the sinks :
(2.6 ± 0.9) + (2.5 ± 0.5)2.6 + 2.55.1Net Carbon Movement :
9.3 - 5.14.2 into the atmosphereejbsjca bdsj dbcsc j ecsabkfskbj jcbaskjbb
Sorry but I can't help you cuz the words you use makes no sens if you are going to ask a question pls do and dont joke around about it thank you very much and have a great day! ^^
Help please i need to submit it noww
[tex]\text{Given that,}\\\\m_1 = m_2= 15~ kg\\\\r = 35~ m \\\\G = 6.67 \times 10^{-19} Nm^2 kg^{-2}\\\\\text{Gravitational force,}\\\\F_g = \dfrac{Gm_1 m_2} {r^2 }\\\\\\~~~~=\dfrac{6.67 \times 10^{-19} \times 15 \times 15}{35^2}\\\\\\~~~~=1.2252 \times 10^{-19}~N[/tex]
A circular loop has a radius of .3 meters a magnetic field has an initial strength of 2 tesla directed out of the page. over the course of 5 seconds the magnetic field is changed to 3 tesla directed out of the page calculate the induced voltage in the loop
Hi there!
We can use Faraday's Law to solve:
[tex]\epsilon = N\frac{d\Phi _B}{dt}[/tex]
ε = Induced emf (? V)
N = Number of loops (1 loop)
ΦB = Magnetic flux (Wb)
We know that:
[tex]\Phi_B = \oint B \cdot dA = B\cdot A[/tex]
Since the area of the loop remains the same, we can take this out of the time derivative.
We get:
[tex]\frac{d\Phi_B}{dt} = A * \frac{dB}{dt}[/tex]
Also, since N = 1, we can now rewrite the equation for the induced emf as:
[tex]\epsilon = A * \frac{dB}{dt}[/tex]
dB/dt is equivalent to the change in the magnetic field with respect to time:
[tex]\Delta B = \frac{B_f - B_i}{\Delta t}\\\\\Delta B = \frac{3 - 2}{5} = 0.2 \frac{T}{s}[/tex]
Now, substitute this value into the equation for induced emf:
[tex]\epsilon = \pi (0.3^2) * (0.2) = \boxed{0.0565 V}[/tex]
**Also, since the magnetic field INCREASED out of the page, this change in magnetic flux will create an induced CLOCKWISE current that produces a magnetic field into the page in order to oppose the increase in magnetic flux OUT of the page.
Can someone please answer this, ill give you brainliest Would be very appreciated.
Answer:
cohesive properties
Explanation:
The property of cohesion allows liquid water to have no tension on the surface.
Answer:
Cohesive properties
Explanation:
Cohesive properties denotes to attraction of particles on surface like sticking with each otherWater has higher cohesive properties so no surface tensionWhich requires more force to accelerate?
an object that weighs 20 kg
an object that weighs 5 kg
Answer:
An object that weighs 20 kg
Explanation:
Acceleration and mass are indirectly proportional.
Why is the moon’s force of gravity less than that of the earth?
Why is the moon’s force of gravity less than that of the earth?
Answer:-Since the moon has a smaller mass than the earth, the moon has less gravity than the earth. Gravity is related to mass.
Larger mass = larger gravity
Smaller mass = lesser gravity
Moon has small mass, therefore less gravity.
A ________ results when the outward-directed gas pressure (created by thermal nuclear energy) is balanced in a stable relationship with inward-directed gravitational force.
When the outward-directed gas pressure (created by thermal nuclear energy) is balanced in a stable relationship with inward-directed gravitational force results in main sequence star.
What is pressure ?The pressure is the force exerted per unit area.
A main sequence star fuses hydrogen in its core and has balanced outward pressure from core nuclear fusion and gravitational forces will be pushing inward.
When the outward-directed gas pressure is balanced in a stable relationship with inward-directed gravitational force results in main sequence star.
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What's the difference between an electrician and an electrical engineer
The difference between an electrician and an electrical engineer is the way of working towards a common electrical project.
What is an engineer?An engineer is a person who performs a function like designing, building, or maintaining engines, machines, or structures.
Electrical engineers and electricians both commonly involved in the process of creating and installing critical electrical systems.
An electrical engineer can design electronics and is familiar with the working of electrical parts.
An electrician is much more like a builder. They take the designs from electrical engineer and follow them to create, repair, or revise actual electrical systems.
Thus, the difference between an electrician and an electrical engineer is the way of working towards a common electrical project.
Learn more about an engineer.
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A string with a natural frequency of 15 Hz will likely show
resonance at which frequencies: (could be more than one)
A) 20 Hz; B) 30 Hz; C) 40 Hz; D) 50 Hz; E) 60 Hz
What other frequencies would show resonance?
Frequencies would show resonance will be 30 Hz,45 Hz and 60 Hz. Option B and E are correct.
What is resonance frequency?Mechanical systems and charged particles all have a frequency that they vibrate at. this frequency is referred to as the resonance frequency or natural frequency.
When the matching vibrations of another item enhance the amplitude of an object's oscillations, this is known as resonance.
15 Hz is the fundamental frequency of the string.
Higher frequencies, such as the first overtone, second overtone, third overtone, and so on, must be used to cause the string to vibrate in a resonant manner.
F₁ = 2F₀ = 2 x 15 = 30 Hz is the initial overtone.
F₂ = 3F₀ = 3 x 15 = 45 Hz is the second overtone.
F₃ = 4F₀ = 4 × 15 = 60 Hz is the third overtone.
Hence,frequencies would show resonance will be 30 Hz,45 Hz and 60 Hz. Option B and E are correct.
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Suppose you have a scarf that appears red when you are outside on a sunny day. Will the scarf appear red if you view it under different colors of light?
Answer:
no
actually no one weres the scarf in sunny ʕ•ε•ʔ
Explanation:
The colours we see are the wavelengths that are reflected or transmitted. For example, a red shirt looks red because the dye molecules in the fabric have absorbed the wavelengths of light from
What is the benefit of cooling down after exercise?
Answer:
3 benefits of a restrict afterwards a practice Brings essence rate back off and slows respiring Muscles return back to optimum motionless distance Prevents ancestry from combining in lower limits Cool down stretches are used to weaken courage rate and respiring rates afterwards exercise. It can help cause your soul rate back off to situated rate.
Explanation:
What are stars made of?
Answer: The churning nuclear forges at the centres of stars produce light and heat, creating stars.
Explanation:
Answer: Hyrdrogen and Helium.
Explanation:
What are the criterions that need for mechanical work?
Mechanical work is the work done by a force on a mechanical body like machines .
When some mechanical force is applied on the machine the machine does some work which is mechanical work
It's a scaler quantity and have units as Joules(J)
The main criterion is mechanical energy,Force , Displacement (Not mandatory)
What is the hubble classification for a spiral galaxy with a small nuclear bulge and wide loosely wound spiral arms?.
Hubble classification for a spiral galaxy with a small nuclear bulge and wide loosely wound spiral arms is a, b and c.
What is the galaxy?Galaxy is the collection of stars, interstellar gases, dust and stone in the large space of universe.
Hubble classified these galaxies by referring them as SB galaxies with subclasses a, b, and c. They are just like the normal spirals. The spiral arms in barred spirals don't actually but appear to originate at the ends of the bar.
Hence, Hubble classification for a spiral galaxy with a small nuclear bulge and wide loosely wound spiral arms is a, b and c.
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Find the equivalent resistance of this circuit.
[tex]\huge{\boxed{\mathcal{♔︎Answer♔︎}}}[/tex]
200Ω
Explanation:
⠀
⠀
⠀⠀⠀⠀❖ Note
⠀
What is resistance?
Resistance is the opposition offered by the electric current.
⠀
What is electric current?
An electric current is the stream of flowing charge moving around a circuit.
⠀
⠀
⠀⠀⠀⠀■ Solution
⠀
[tex] \textsf{ As here, we can see in the above diagram} \\ \\ \sf R_1 \: and \: R_2 \: both \: are \: in \: series. \\ \\ \textsf{ So their total resistance will be} \: R_s[/tex]
So for formula for series will be
[tex] \sf R_s = R_1 + R_2 \\ \\ \sf R_s = 100 + 200 \\ \\ \boxed {R_s = 300Ω}[/tex]
⠀
[tex] \sf As \: you \: can \: also \: see \: here , \\ \\ \sf R_s \: is parallel \: with \: R_3 \\ \\ \sf So \: their \: total \: resistance \: R \: will \: be[/tex]
⠀
[tex] \sf \frac{1}{R } = \frac{1}{R_3} + \frac{1}{R_s } \\ \\ \sf \frac{1}{R} = \frac{1}{600} + \frac{1}{300} \\ \\ \sf \frac{1}{R} = \frac{1 + 2}{600} \\ \\ \sf \frac{1}{R} = \frac{ \cancel3}{ \cancel{600} \: \: \small{200}} \\ \\ \sf \frac{1}{R} = \frac{1}{200} \\ \\ \boxed{ \tt{R = 200Ω}} [/tex]
⠀
⠀
So the total resistance will be 200Ω.
What the name for the phenomenon of inducing voltage by changing the magnetic field around a conductor?
Electromagic
Electromagnetic Induction
Electrostatics
Van de Graaff generation
The phenomenon of inducing voltage by changing the magnetic field around a conductor will be Electromagnetic Induction. Option B is correct.
What is the Faraday law of electromagnetic induction?According to Faraday's law of electromagnetic induction, the rate of change of magnetic flux link with the coil is responsible for generating emf in the coil to result in the flow of amount of current .
So in order to increase the current, we need to increase the EMF;
so we can increase it by;
1) Increasing the number of turns
2) Increase the area of the loop
3) By moving the magnet faster
Hence, option B is correct.
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A force of 26. 4lb is applied to an area of 1. 71in 2 what is the pressure
Answer:
Dont kno
Explanation:
Dont
An object attached to one end of a spring makes 20 vibrations in 10 seconds. Its angular frequency is: 0. 79 rad/s 1. 57 rad/s 2. 0 rad/s 6. 3 rad/s 12. 6 rad/s
Angular frequency in radian per second for 20 vibrations in 10 seconds is 12.6 rad/s
What is Angular frequency?Angular frequency is the number of vibrations in radian per second.
The total number of vibrations n is 20 and the time taken for these vibrations is 10 s
The frequency of the vibrations will be
f = 20 / 10 = 2 Hz
Angular frequency is related to the frequency as
ω = 2πf
ω=2π × 2
ω = 12.6 rad/s
Thus, the angular frequency is 12.6 rad/s.
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What is the amplitude of the wave?
Answer:
1 meter for this wave
Explanation:
Amplitude is the height of the wave from the midline to the crest
A proton of energy 900gev collides with a stationary proton. Find the available energy ea. The rest energy of the proton is 938mev
The total energy available during the collision of the two protons is determined as 900,938 MeV.
Total energy available during the collision
Based on the principle of conservation of energy, the total energy of the two protons during the collision will be conserved.
Available energy = Er + K
Where;
Er is the rest energyK is the kinetic energyAvailable energy = 938 MeV + 900 GeV
Available energy = 938 Mev + 900 x 10³ MeV
Available energy = 938 MeV + 900,000 MeV
Available energy = 900,938 MeV
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two cats are sitting on a 30 m hill. one cat has a mass of 4 kg and the other 6 kg. which cat has greater potential energy
Answer:
The 6 kg cat.
Explanation:
The six killogram cat because accelaratoin due to gravity is more for havy objects then smaller objects. (or lighter I suppose) ;)
Answer:
the cat with a mass of 6 kg
Explanation:
Potential Energy : Weight x Height
PE of cat w/ mass 4 kg :
PE = 4 x 10 x 30PE = 40 x 30PE = 1200 JPE of cat w/ mass 6 kg :
PE = 6 x 10 x 30PE = 60 x 30PE = 1800 JClearly, the cat with a mass of 6 kg has greater potential energy.
which of the following do plants need for photosynthesis?
Answer:
They need carbon, sunlight and water.
Explanation:
Wave travelling along right with speed of 0. 5 m/s time 4 second point p
The wavelength of the wave which is travelling along right with speed of 0. 5 m/s time 4 second point is 2.
What is the speed of wave?Speed of wave is the rate by which the wave travels. It can be described as the distance cover by the crest or thrust of it per unit of time. It can be calculated with the following formula,
[tex]v=f\times\lambda[/tex]
Here, (f) is the frequency and (λ) is the wavelength.
The frequency is inverse of time. Thus, the value of frequency in time t is,
[tex]f=\dfrac{1}{t}\\f=\dfrac{1}{4}\\f=0.25[/tex]
The speed of the wave is 0.5 m/s. Put the values in the formula,
[tex]v=f\times\lambda\\0.5=0.25\times\lambda\\\lambda=\dfrac{0.5}{0.25}\\\lambda=2[/tex]
Thus, the wavelength of the wave which is travelling along right with speed of 0. 5 m/s time 4 second point is 2.
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