Answer:
[tex]{ \boxed{ \sf{F = Bev}}}[/tex]
Explanation:
F » Force
B » Magnetic flux density
e » magnitude of charge
v » voltage
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Yo someone help me on dis jawnt rq plzzz!
Answer:
the answer is 45.6 kg = 45600 g
Explain how the lithosphere, hydrosphere, and atmosphere individually and collectively affect the biosphere. (2 points)
The lithosphere is the solid layer of Earth, the hydrosphere is the water-based part, and the atmosphere is the air, they work together to shape the biosphere.
What is the lithosphere?The lithosphere is the soil part that composes the Earth's planet (i.e., the soil), the hydrosphere refers to oceans and all water bodies, while the atmosphere is the layer of air. These three layers interact with biotic factors to shape the biosphere.
In conclusion, the lithosphere is the solid layer of Earth, the hydrosphere is the water-based part, and the atmosphere is the air, they work together to shape the biosphere.
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A difference between final and original position in a straight line
Answer:
For straight line motion, positions can be shown using a number line. The separation between original and final position is called displacement.
EXPLANATION:For straight line motion, positions can be shown using a number line. The separation between original and final position is called displacement.
1.020 please help!!
Mark brainliest
Answer:
0.0035 mg
Explanation:
1 mcg = 1e-3 mg
》35 mcg = 35×10^-3 mg
= 0.0035 mg
Example of optical object
Answer:
Telescope,cameras
Hope it helped
c. A car was running with a velocity of 20m/s. what will be its velocity after 30s if it's acceleration is 5m/s2
[tex] \large \mathfrak{Solution : }[/tex]
let's use first equation of motion to solve this ;
[tex] \boxed{ \boxed{ v = u + at}}[/tex][tex]v = 20 + (5 \times 30)[/tex][tex]v = 20 + 150[/tex][tex]v = 170 \: \: m/s[/tex]Velocity after 30 seconds = 170 m/s
Which of the following is certain to change as a ball
accelerates?
A mass of the ball
B inertia of the ball
C velocity of the ball
Dforce acting on the ball occasionally
Answer:
C. Velocity of the ball
Explanation:
This is because as the acceleration of the ball increases, there will be an increase in the velocity rate and decrease in the time.
See the formula,
a=m/s²
Write three or four sentences to describe the process by which the sound of a book dropped on a desk reaches your ear. (3 points)
can someone help me this question
Answer:
Volume of wood is 68-50 = 18 cm³
Explanation:
Hope it helps youThe temperature at which water leaves the boiler is?
Answer:
The average setting for a gas-powered hot water boiler is 180°F. This provides the appropriate level needed for most cold weather temperatures. If you can raise the temperature manually, do not set it any higher than 210°F (which is often the limit), and try to remain down at 190°F if you need the extra heat.
Which of the following measurement
tools would you need to determine the
weight of an iPad?
A. graduated cylinder
B. double pan balance
C. scale
D. triple beam balance
Answer:
It would be C.scale, because
A. is for liquid
B. is for measuring 2 things
and D. is for i don't know(lol)
but i think the scale would be the easiest way to measer an iPad
Grive reasons The units of force and pressure are called derived units. an
How ??
Force:-
We know
According to newtons second law
[tex]\boxed{\sf Force=Mass\times Acceleration}[/tex]
[tex]\\ \sf\longmapsto Force=kgm/s^2[/tex]
We don't use it
[tex]\\ \sf\longmapsto Force=Newton(N)[/tex]
Hence its a derived unit.
Pressure:-
[tex]\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}[/tex]
[tex]\\ \sf\longmapsto Pressure=\dfrac{N}{m^2}[/tex]
[tex]\\ \sf\longmapsto Pressure=Pascal(Pa)[/tex]
Hence its a derived unit
A particle is projected from a point on a horizontal plane and has an initial velocity of 28root 3 m/s at an angle of 60 degree .find the greatest heights reached by the particle
Answer:
uujjjjjctc7tox7txr9ll8rz8lr5xl8r6l8dl85x8rl5x8rl5x8rl5xrx8l58rk5xr8l5xr6l8xr68lc
In the study of Physics, the "Universal Gas Law" is not considered a law at
all.true or false
Answer: It’s False hope this helps
Explanation:
The answer is False, the Universal Gas Law" is considered law in Physics.
The universal gas law is considered law in physics and it states that the product of the Pressure and Volume of a given mass of gas is equivalent to the product of the number of moles, Boltzmann constant, and the temperature.
It is also known as the Ideal gas equation and is expressed mathematically as:
PV = nRT where:
P is the pressure
V is the volume
n is the number of moles
R is the Boltzmann constant
T is the absolute temperature.
Hence from the above definition, we can see that Universal Gas Law" is also considered a law in physics. The answer is False
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State the two laws of electromagnetic induction, and state them.
An AC generator consists of eight turns of wire, each having area A =9.0x 10-2 m2, with a total resistance of 12.0 V. The coil rotates in a magnetic field of 0.500 T at a constant frequency of 60.0 Hz, with axis of rotation perpendicular to the direction of the magnetic field. (a) Find the maximum induced emf. [3] (b) What is the maximum induced current? [1] (c) Determine the induced emf and current as functions of time. [2] (d) Wiat maximum torque must be applied to keep the coil turning? (3)
We have that the maximum induced emf,the maximum induced current, the induced emf and current as functions of time,The maximum torque must be applied to keep the coil turning are
a )[tex]E_{max}=135.6v[/tex]
b) [tex]I_max=11A[/tex]
c) [tex]I_i=11A sin(376.9rad/s t)[/tex]
[tex]E_i=135.6v sin(376.9rad/s )[/tex]
d) [tex]T=4.07Nm[/tex]
From the Question we are told that
Area [tex]A =9.0x 10^{-2} m^2[/tex]
Total resistance of [tex]R=12.0 V.[/tex]
Magnetic field of [tex]B=0.500 T[/tex]
Constant frequency [tex]F=60.0 Hz[/tex]
Eight turns [tex]N=8N[/tex]
A)
Generally the equation for the maximum induced emf is mathematically given as
[tex]E=NAB\omega[/tex]
Where
[tex]\omega=2\pi f[/tex]
[tex]\omega=2*3.142*60[/tex]
[tex]\omega=376.9rad/s[/tex]
[tex]E_max=8*(9.0x 10-2)*0.5*376.9[/tex]
[tex]E_{max}=135.6v[/tex]
B)
Generally the equation for the maximum induced Current is mathematically given as
[tex]I_m=\frac{E}{R}\\\\I_max=\frac{135.6}{12}\\\\I_max=11A[/tex]
C)
Generally for the induced emf and current as functions of time we Substitute [tex]E_{max}[/tex] and [tex]\omega[/tex] into
[tex]E_i=E_{max} sin\omega t[/tex]
[tex]E_i=135.6v sin(376.9rad/s t)[/tex]
And Same for induces Current
[tex]I_i=I_{max} sin\omega t[/tex]
[tex]I_i=11A sin(376.9rad/s t)[/tex]
D)
Generally the equation for the maximum torque is mathematically given as
[tex]T = rB sin θ[/tex]
Where
r= maximum magnetic moment
[tex]r=NIAr= 8*11.3*0.090r=8.14m^2[/tex]
Therefore
[tex]T = 8,14*0.500 sin 90[/tex]
[tex]T=4.07Nm[/tex]
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The working principle of a washing machine is
A) reverse osmosis
B) diffusion
C) centrifugation
D) dialysis
Explanation:
The working principle of a washing machine is centrifugation .
Answer:
The correct option is C) centrifugation
Explanation:
The washing machine consists of a centrifuge for this purpose. A centrifuge is a piece of equipment that puts an object in rotation around a fixed axis, applying a force perpendicular to the axis of spin that can be very strong.
Which statement is true?
The combustion of biomass can replace fossil fuels in conventional power plants.
Hydroelectric energy uses the energy from the sun, which is a renewable resource.
Oil is a non-renewable resource that is hardly ever used, so there is not a concern of depleting the Earth's supply.
Solar energy is a non-renewable resource that is used by many countries all over the world.
Answer:
Hello,
The combustion of biomass can replace fossil fuels in conventional power plants, which is true.
I hope I helped you :)
List three forms of energy and how used
Which of the following does not represent a question that can be answered by science?a. How much energy is released in a given nuclear chain reaction? b. Can a nuclear chain reaction be controlled? c. Should uncontrolled nuclear reactions be used for military applications?
d. What is the half-life of a waste product of a nuclear reaction?
Answer:
c. Should uncontrolled nuclear reactions be used for military applications?
Explanation:
The question on wether to use technology for military applications, is not a science question but a moral dilemma
The question that can not be answered by science is the question; "Should uncontrolled nuclear reactions be used for military applications?".
Science is empirical in its approach. This implies that the questions that are answered by science are questions that are testable and can be be verified in a laboratory.
Science does not answer questions that deal with the opinions of various individuals. That is completely outside the purview of scientific investigation.
Hence, science does not answer the question; Should uncontrolled nuclear reactions be used for military applications?
This question deals with moral values and the opinions of people about a matter and not empiricism.
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Therefore, they
experience a
and produce
surface tension.
Answer:
Explanation:
Which object is not accelerating?
A A baseball player sliding into home base.
B A blue Ford 150 pick-up truck speeding up from 50 mph to 80 mph.
C A ladybug crawling forward at constant rate of 2.5 m/s.
D A student riding on a Ferris wheel at a constant rate of 5.0 m/s.
C. The ladybug's speed and direction are not changing, so she has no acceleration.
In A, B, and D, either speed or direction are changing, and that's acceleration.
A truck travels 40 m while slowing down from 15 m/s to 10 m/s. How long does it take to do this?
Answer:
4s
Explanation:
Why is evolution called a scientific theory?
PLEASE HELP!!!
I think it’s either c or d
Answer:
There is lots of evidence to support it, is the correct answer
The reason why evolution is regarded as a scientific theory is because there are lots of scientific evidences to support it.
Evolution refers to the scientific thinking that complex life forms came out of simple life forms. The complex sequence of events that occurred during the transformation of simple life forms to complex life forms are described by the theories of evolution.
The reason why evolution is regarded as a scientific theory is because there are lots of scientific evidences to support it.
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If the displacement of an object is given in SI units by Dx = -3 t + 4 t 2, at t = 2 s its velocity and acceleration are, respectively:
a) positive, positive.
b) negative, positive.
c) negative, negative.
d) positive, negative.
(A)
Explanation:
If the displacement is given by
[tex]D_x = -3t + 4t^2[/tex]
Then its velocity [tex]v_x[/tex] and acceleration [tex]a_x[/tex] are then
[tex]v_x = \dfrac{dD_x}{dt} = -3 + 8t[/tex]
[tex]a_x = \dfrac{dv_x}{dt} = 8[/tex]
Evaluated at t = 2, we see that [tex]v_x = 13[/tex] and [tex]a_x = 8[/tex] and both of them are positive. Therefore, the answer (a).
Answer:
QUESTION
If the displacement of an object is given in SI units by Dx = -3 t + 4 t 2, at t = 2 s its velocity and acceleration are, respectively:
[tex]==============================[/tex]
ANSWER
a) positive, positive
[tex]==============================[/tex]
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(◕ᴗ◕✿)
An engineer is given the task of comparing the fuel efficiency of four car models. She reports the following findings: Model 1, 14 kilometers per liter. Model 2, 9 miles per liter. Model 3, 56 kilometers per gallon. Model 4, 1600 meters per liter. The data for which two models consistently follow the use of SI units?
A.
Models 1 and 4
B.
Models 1 and 3
C.
Models 2 and 3
D.
Models 3 and 4
Answer:
the ans is:-
Model 4
because it uses meters
What is difference between magnetic flux and magnetic flux linkage?
Answer:
Magnetic flux has formular: BA while Magnetic flux linkage has formula: NBA
Explanation:
N is number of turns of a coil
B is magnetic flux density across the coil
A is area of coil
[tex].[/tex]
This graph shows that as an object's mass increases its
es )
A)
inertia increases.
B)
inertia decreases.
acceleration increases.
D)
acceleration decreases.
Answer:
(A) inertia increases.
Explanation:
Inertia is the property of mass that resists change so the mass an object has the greater the inertia
Rowenda is stopped on the side of the road. She then starts pedaling her bicycle for 15 seconds. Her final
velocity is 9 m/s. What is her acceleration while she is pedaling?
Explanation:
acceleration = change in velocity / change in time
a = v2-v1
- - - - - -
t
V1 = 0 ( since she stopped)
V2 = 9 m/s
t =15s
a = 9 - 0
- - - -
15
= 0.6m/s^2
What would make oppositely charged objects attract each other more?
o increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
O decreasing the positive charge of the positively charged object and decreasing the negative charge of the negatively charged object
O increasing the distance between the positively charged object and the negatively charged object
O maintaining the distance between the positively charged object and the negatively charged object
Answer:
a: increasing the positive charge of the positively charged object and increasing the negative charge of the negatively charged object
Explanation:
The oppositely charged objects attract each other more is option a. It increased the positive charge and the negative charge.
The Attraction of the oppositely charged:At the time when the oppositely charged objects are attracted to each other more so here the positive charge should be increased with respect to the positive charge object and the negative charge is increased with respect to the negative charge object
Hence, the first option is correct.
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