physics 1
physics geniuses where r u need help!!!
pls also check other questions!
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The emf is induced in the wire will be 1.56 ×10 ⁻³ V. The induced emf is the product of the magnetic field,velocity and length of the wire.
What is induced emf?Emf is the production of a potential difference in a coil as a result of changes in the magnetic flux passing through it.
When the flux coupling with a conductor or coil changes, electromotive Force, or EMF, is said to be induced.
The given data in the problem is;
B is the magnitude of the magnetic field,= 5.0 ×10⁻⁵ T
V(velocity)=125 M/SEC
L(length)=25 cm=0.25 m
The maximum emf is found as;
E=VBLsin90°
E=125 × 5.0 × 10⁻⁵ ×0.25
E=1.56 ×10 ⁻³ V
Hence, the emf is induced in the wire will be 1.56 ×10 ⁻³ V
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Related Questions
When electrons are accelerated by 2450v in an electron microscope they will have wavelengths of
a)8.113nm
b)0.622nm
c)0.811nm
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Not sure tho
The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.
Explain why the bottom pair of pliers might have made it easier to loosen the bolt, while the top pair failed.
Use your knowledge of mechanical advantage and ideal mechanical advantage to describe how simple machines can change the relationship between distance and force.
Answers
The top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it. Because the contact between the bolt and the pliers working surface is less.
What is mechanical advantage ?Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of the given mechanical machine.
The efficiency to open the stubborn bolt depends upon the contact between the working surface of the pliers and the bolt.
The contact between the bolt and the top pair of pliers working surface is less. Its mechanical advantage is less.
Hence, the top pair of pliers failed to loosen a stubborn bolt, but the bottom pair successfully removed it.
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write down what should be considered when writting scientific notation
Answers
Answer:
Find the original location of the decimal.
Determine if the number will be positive or negative.
Move the decimal point until it creates a number between one and ten.
Count how many times you moved the decimal.
Explanation:
What is the potential at a distance of 5. 0 ? 10-10 m from a nucleus of charge 50e?
Answers
The electric potential at a distance from a nucleus of charge 50e is 144 Volts.
What is electric potential?The potential is the work done by the test charge to move it from infinity to a particular point.
The potential is given by the relation
V = kQ / r
The distance of a point from the nucleus is 5.0 × 10⁻¹⁰ m and the charge on the nucleus is 50 e = 50 × 1.9 × 10⁻¹⁹ C.
k = 9 × 10⁹ kg-m²/s²-C²
Here, Q is the charge, r is the distance and k is the constant.
Substituting the value into the equation and solving, we get
V = 144 Volts
Thus, the potential at a distance from a nucleus of charge 50e is 144 Volts.
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explain pleease :( itsreally hard
Answers
Answer:
0.5V
Explanation:
The formula for the potential difference is V=W/Q where W is the work and Q is the charge.
10/5 = 0.5
Hope this helped!
electricity is the flow of
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Answer:
a. electrons
Explanation:
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Why is water sometimes called the universal solvent.
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Answer:
Because it can desolve many many things.
Explanation:
What causes a moonbow to occur? Reflection and refraction of moonlight Collisions of gaseous particles of Earth's atmosphere with charged particle released from the sun's atmosphere Extra-terrestrial life forms Solar flares in the night sky
Answers
A moonbow is occurred due to reflection and refraction of moonlight.
What is Moonbow?A moonbow also known as a lunar rainbow. It is the phenomenon occurs when the moonlight is refracted through water droplets in the air. The amount of light available from the full moon is very less than that produced by the sun. So, the moonbows are the type of rainbow, produced by the moonlight refraction and reflection through water droplets. Moonbows are fainter than rainbows.
Thus, a moonbow is occurred due to reflection and refraction of moonlight.
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Points a and b are nearby a proton in otherwise empty space. the potential is chosen to be zero very far away from the proton. the potential at a is half as much as the potential at b. compared to the electric field energy density at b, the electric field energy density at a is __
Answers
Compared to the electric field energy density at b, the electric field energy density at a is large by a factor of 16.
What is potential energy?The energy of a particle by virtue of its position.
The potential at B = Vb =V
Vb = 1/4π∈₀ x e/r₁ = ke/r₁
V =ke/r₁
and r₁ = ke /V
The potential at A = Va = 2V
2V = ke/r₂
r₂ = ke/2V
The electric field at point B. Eb = ke/r₁²
Substitute the value of r₁, we get
Eb = V²/ke
The electric field at point A , Ea = ke /r₂²
Substitute the value of r₂, we get
Ea = 4V²/ke
The electric field energy density at point A and B,
Ua = 1/2 ∈Ea²
Ub = 1/2 ∈Eb²
electric field energy density is proportional to the square of electric field at the particular point.
Ua/Ub =(Ea/Eb)²
Substitute the values, we get
Ua/Ub = 16
Thus, compared to the electric field energy density at b, the electric field energy density at a is large by a factor of 16.
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A 2400 kg satellite is in a circular orbit around a planet. The satellite travels with a constant speed of 6000 m/s. The radius of the circular orbit is 10 6 m
Answers
The magnitude of the gravitational force exerted on the satellite by the planet will be F = 11970.1 N
What is gravitational force?
The gravitational force is a force that attracts any two objects with mass.It is directly proportional to the masses and inverse of the distance between the two objects.
It is given that,
Mass of the satellite, m = 2400 kg
Speed of the satellite, v = 6670 m/s
Radius of the circular path,
Let F is the magnitude of the gravitational force exerted on the satellite by the planet. The centripetal force is equal to the gravitational force. It is equal to :
[tex]F=\dfrac{mv^2}{r}[/tex]
[tex]F=\dfrac{2400\times (6670)^2}{8.92\times 10^6}[/tex]
F = 11970.1 N
So, the magnitude of the gravitational force exerted on the satellite by the planet is 11970.1 N. Hence, this is the required solution.
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Where in the galaxy are the most stars born?
Answers
Answer: Stars are formed in dust clouds and are found in most galaxies.
Explanation:
Answer: Stars form inside relatively dense concentrations of interstellar gas and dust known as molecular clouds.
Explanation:
A charge Q acts on a test charge to create an electric field, E. The strength of the field is measured at 8 N/C at 40 cm away. What would the field strength be 80 cm away with a charge of 1/2 Q? Explain.
Answers
The electric field strength created by a charge decreases with increasing distance from the charge. The relationship between the electric field strength (E) and the distance (r) from the charge is given by the inverse square law:
E ∝ 1/r^2
Let's consider the given scenario:
At a distance of 40 cm (0.4 m) from the charge, the electric field strength is measured as 8 N/C.
We want to determine the electric field strength at a distance of 80 cm (0.8 m) from the charge when the charge is reduced to 1/2 Q.
First, we can set up a proportionality based on the inverse square law:
(E1)/(E2) = (r2^2)/(r1^2)
Substituting the given values:
8/E2 = (0.8^2)/(0.4^2)
Simplifying the equation:
E2 = 8 * (0.4^2)/(0.8^2)
E2 = 8 * 0.16/0.64
E2 = 2 N/C
Therefore, at a distance of 80 cm from the charge, when the charge is reduced to 1/2 Q, the electric field strength would be 2 N/C.
The strength of an electric field depends on the magnitude of the charge creating the field and the distance from the charge. In this case, since the charge is reduced to 1/2 Q, the electric field strength is also halved.
Additionally, as we move twice as far away from the charge (from 40 cm to 80 cm), the electric field strength decreases according to the inverse square law. As a result, the electric field strength is reduced to 2 N/C at a distance of 80 cm.
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Compare the amount of work done when one man uses an ideal pulley to lift a 500 newton weight 2 meters and one man lifts a 500 newton weight 2 by hand.
Select one:
a. Depends on the number of pulleys.
b. More work is done when one man lifts the weight by hand.
c. More work is done when one man lifts the weight using a pulley.
d. The amount of of work is the same with or without the lifting pulley.
Answers
More work is done when one man lifts the weight using a pulley. Option C is correct.
What is mechanical advantage ?Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtained efficiency of forces in levers and pulley.
It is an effective way of amplify the force in simple machines like lever The theoretical mechanical advantage is defined as the ratio of the force responsible for the useful work in the system to the applied force.
More work is done when one man lifts the weight using a pulley. With the pulley, the mechanical advantage is increasing.
Hence, option C is correct.
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why are sicissors concidered a first class lever
Answers
Answer:
The Fulcrum is the pivot in the middle and the Force is applied with your hand at the end. The item being cut has a “Shear” force applied to it by the blades.
Hope it helps :))
The _____ of an object consists of its speed and direction.
Answers
Answer:
The answer is velocity.
Explanation:
Velocity in physics is defined as a vector measurement of the direction and rate of the motion.Which list below contains only ionic compounds?
Answers
Explanation: ionic compounds are metals and nonmetals, refer to your periodic table
A circuit has three resistors (12 omega,25 omega, and 62 omega) connected in series. the potential difference across the 12 - omega resistor is 4. 4v. what is the potential difference across (a) the 25-omega resistor and (b) the 62-omega resistor ?
Answers
Answer:
Since the resistors are in series, all of them carry the same current I.
if the potential drop across the 12 Ω is 4 V
I = 4 / 12 = 1/3 = .333 amp
a) 25 Ω * .333 amp = 8.33 V
b) 62 V * .333 amp = 20.7 V
A pencil has a density of 0.875 g/ml. It has a volume of 4.0 ml. Find the mass
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Answer:
To find the mass using density and volume we just multiply them against each other which causes ml to cancel and just leaves us with grams which represents how much the item weights.
[tex]mass=density*volume[/tex]
[tex]mass=0.875\frac{g}{ml}*4.0\ ml[/tex]
[tex]mass=3.5\ g[/tex]
Therefore, our final answer is that our pencil weight 3.5 grams
Hope this helps! Let me know if you have any questions
Can someone please answer this, ill give you brainliest Would be very appreciated.
The fact that water is attracted to itself, a property called (options adhesion, cohesion, surface tension), leads to another important property, the liquid form of water is (options less, more, equally) dense than the solid form. As water solidifies into ice, the molecules must move apart in order to fit in to a crystal lattice structure, causing water to expand as it freezes. Because of this, (options ice floats, ice sinks, ice forms at the surface then sinks) and water sinks, which keeps the oceans liquid and prevents them from freezing solid from the bottom up.
Answers
Answer:
See below ~
Explanation:
The fact that water is attracted to itself, a property called cohesion, leads to another important property, the liquid form of water is more dense than the solid form. As water solidifies into ice, the molecules must move apart in order to fit in to a crystal lattice structure, causing water to expand as it freezes. Because of this, ice floats and water sinks, which keeps the oceans liquid and prevents them from freezing solid from the bottom up.
If we were to illuminate them only with light from the balmer transition considered above, would the solar panels produce a current?
Answers
If we were to illuminate them only with light from the balmer transition considered above, the solar panels would not produce current.
What are solar panels?Solar panels are used to produce energy according to the principle of the photoelectric effect. When the solar panel is hit with light in the balmer series, the light is reflect hence no current is produced.
Therefore, If we were to illuminate them only with light from the balmer transition considered above, the solar panels would not produce current.
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100 POINTS!! PLEASE HELP ASAP. WILL MARK BRANLIEST.
3.) You inspect a bottle of sunscreen to see what radiation it claims to block. You are looking for sunscreen that blocks dangerous radiation from the sun but does not make claims about other types of radiation. Which claim on a bottle would best meet these criteria?
a.Blocks all UV and infrared rays
b.Blocks harmful UVA and UVB radiation
c.Blocks the full spectrum of violet and ultraviolet radiation
d.“Blocks harmful UV and gamma rays
4.) Which description fits a type of electromagnetic radiation that could harm living cells?(1 point)
a. electromagnetic waves with very short wavelengths
b. waves with frequencies low enough that they are not visible
c. radio waves
d. blue light
5.) Which statement correctly describes how a tanning bed machine works?(1 point)
a. It gradually increases the ionizing energy of radiation to the maximum.
b. It matches the amount of sunlight that the skin can absorb..
c. It decreases production of the skin’s protective pigment, which causes damage.
d. It delivers an ionizing electromagnetic radiation called ultraviolet light.
7.) Tanning beds expose the body to a certain type of ultraviolet (UV) light. It has been claimed that this helps the body manufacture its needed vitamin D. Which evidence contradicts this claim?(1 point)
a. Both UVA and UVB light are produced by tanning beds.
b. The skin does not have the ability to absorb any type of UV light.
c. The body needs UVA light, and tanning beds deliver UVB light.
d. The body needs UVB light, and tanning beds deliver UVA light.
8.) Studies show that matter absorbs various types of electromagnetic radiation depending on the frequency and amount of energy they carry. Which sequence of types of electromagnetic radiation is arranged from that with the least to the most energetic photons?(1 point)
a. gamma rays, visible light, ultraviolet, X-rays
b. visible light, ultraviolet, X-rays, gamma rayst
c. ultraviolet, X-rays, gamma rays, visible light
d. X-rays, gamma rays, visible light, ultraviolet
Answers
Answer:
the answer is equal to visible light , ultraviolet, x-rays, gamma rayst
The sequence of types of electromagnetic radiation is arranged from that with the least to the most energetic photons will be visible light , ultraviolet, x-rays, gamma rays.
What is electromagnetic radiation?Electromagnetic radiation is a type of energy that is transmitted in incident photons as both magnetic and electric waves.
Electromagnetic radiation has a spectrum with varying wavelengths and frequencies, which gives it different properties.
Electromagnetic radiation is a type of energy that travels in packets of energy called photons as both electrical and magnetic waves.
Wave-particle duality is the name given to this phenomenon. This is a notion that defines how a wave behaves whether it behaves like particles, waves, or both particles and waves.
Hence the sequence of types of electromagnetic radiation is arranged from that with the least to the most energetic photons will be visible light , ultraviolet, x-rays, gamma rays.
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A 24 V battery is connected to a voltage divider circuit consisting of a 1 resistor and a 2 resistor. What is the voltage across the 2 resistor?
Answers
Answer:
8 V
Explanation:
Equivalent R
1/1 + 1/2 = 1/R3/2 = 1/RR = 2/3ΩFinding Current
I = V/RI = 24/2I = 12AFinding V
V = 12 * 2/3V = 8 VFor nitrogen to be a liquid, its temperature must be within 12.78 °f of –333.22 °f. the equation |x 333.22 | = 12.78 can be used to find x, which represents the maximum and minimum temperatures at which nitrogen is a liquid. is the maximum temperature at which nitrogen is a liquid. is the minimum temperature at which nitrogen is a liquid.
Answers
The maximum temperature is -320.44 and the minimum temperature is -333.22.
How is the temperature variation calculated?In this case, there was an increase of 50 °C in the temperature of this object. We say that the temperature variation suffered by the body was 50°C, and this can be determined mathematically through the difference between the final value and the initial temperature value (60 – 10 = 50).
In this case, we have:
[tex]x+ 333.22 = 12.78\\x=12.78-333.22\\x=-320.44[/tex]
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-320.44 is the maximum temperature at which nitrogen is a liquid.
-346 is the minimum temperature at which nitrogen is a liquid
What is thermodynamics?
o a. the movement of particles
o b. the flow of fluids
o c. the movement of matter
o d. the flow of energy, heat, and work
Answers
3d2
You have been asked to find out the best material for insulating a hot water tank.
You have three materials: aluminium foil, cotton wool and expanded polystyrene.
Describe an experiment to compare the effectiveness of these materials.
Include in your description the way you would use your results to decide the most
effective material.
Answers
The most effective insulating material is polystyrene.
What is insulating material?The material which isolates the body and doesn't allow heat and mass to flow out of the control system.
The insulating material should have the lowest thermal conductivity.
Polystyrene foam has low thermal conductivity which makes it a great insulator to heat.
Aluminum foil can be an effective insulating material because it doesn't flow heat out into the environment.
Cotton wool is effective, but not it is not fire resistant.
Thus, the best effective insulating material is polystyrene.
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Mountain ranges often appear on the edges of continents. What theory does this support?
Mountains were formed when Earth’s crust cooled and Earth shrank.
right answer Mountain ranges were formed when continents collided.
Mountain ranges did not exist millions of years ago.
Mountain ranges were formed only by glaciers.
Answers
Answer:
Option 2
Explanation:
The theory supported by the statement : "Mountain ranges often appear on the edges of continents.", is that :
Mountain ranges were formed when continents collided.Answer: b. Mountain ranges were formed when continents collided.
Explanation:
Which characteristics describe whether a cell contains a nucleus?.
Answers
Answer:
the above picture might help
Find the equivalent resistance of this circuit.
Answers
Answer:
320
Explanation:
Group R1 and R2
Then group R1'2 with R3
Explaination :
Here the given circuit is both in series and parallel. So we would be first calculating the total resistance in series.
Rs = R1 + R2 .... n
Rs = 100Ω + 220Ω
Rs = 320Ω
Therefore, resistance in series combination is of 320Ω.
Now, the circuit would be combined in parallel.
As we know that,
1/Rp = 1/R1 + 1/R2 +... 1/n>> 1/Rp = 1/320 + 1/320
>> 1/Rp = 1 + 1 / 320
>> 1/Rp = 2 / 320
>> 1/Rp = 1 / 160
Cross multiplying them,
>> Rp = 160Ω
Therefore,
Equivalent resistance of circuit is of 160Ω7. Identify the substance if a 5g sample is found to have a volume of 2.5ml.
Substance Density (g/mL)
A. 12.5
B. 2.0
C. 0.50
D. 10
Answers
Answer:
B
Explanation:
Density ( as shown) = g/ml
density = 5 g / 2.5 ml = 2 g/ml
What is the equilibrium constant for the following reaction at 25 °c?
Answers
The equilibrium constant for the provided reaction at the temperature of 25 degree Celsius is 1/20.
What is equilibrium constant?
The equilibrium constant in a chemical reaction is the reaction quotient when the chemical reaction is at equilibrium constant.
The equilibrium constant for the for reaction at 25 °c given in the problem as,
[tex]2A\rightleftharpoons B+C, K_1=1.0 \\2B\rightleftharpoons C+D, K_2=16 \\2C+D\rightleftharpoons 2P, K_3=25 \\[/tex]
Now, the reaction for which the equilibrium constant at 25 °c has to be find out is,
[tex]P\rightleftharpoons A+\dfrac{1}{2}B[/tex]
[tex]K_4=\sqrt{\dfrac{1}{K_1}+\dfrac{1}{K_2}+\dfrac{1}{K_3}}\\K_4=\sqrt{\dfrac{1}{25}+\dfrac{1}{16}+\dfrac{1}{1}}\\K_4=\dfrac{1}{20}[/tex]
Thus, the equilibrium constant for the provided reaction at the temperature of 25 degree Celsius is 1/20.
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