F. A 50. A resistor (R2), and unknown resistor R2, a 120 Volt source, and an ammeter are connected in a
complete circuit. The ammeter reads 0.50 ampere (current).
R1
a. Determine the resistance of Rz.
R2
Answers
Complete question is;
A 50.-ohm resistor, an unknown resistor R, a 120-volt source, and an ammeter are connected in a complete circuit. The ammeter reads 0.50 ampere.
A) Calculate the equivalent resistance of the circuit shown.
B) Determine the resistance of resistor R shown in the diagram.
Answer:
A) R_eq = 240 Ω
B) R = 190 Ω
Explanation:
A) To get the equivalent resistance, we will use the formula;
R = V/I
Where;
V is Voltage
I is current
R is equivalent resistance
From the question, V = 120 V and I = 0.5A
Thus;
R_eq = 120/0.5
R_eq = 240 Ω
B) From the image, we see that the resistors are connected in series.
Formula for resistors in series is;
R = R1 + R2 +..... Rn
Thus;
240 = 50 + R
R = 240 - 50
R = 190 Ω
A) The equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
What is resistance?Resistance is a type of opposition force due to which the flow of current is reduced in the material or wire. Resistance is the enemy of the flow of current.
The given data in the problem is;
R is the resistance = 50.-ohm
v is the voltage = 120-volt source
I is the value of the current =0.50 ampere.
A) The equivalent resistance of the circuit shown will be 240 Ω.
According to ohm's law
[tex]\rm R= \frac{V}{I} \\\\ \rm R= \frac{120}{0.5} \\\\ \rm R=240 \ ohm[/tex]
Hence the equivalent resistance of the circuit shown will be 240 Ω.
B) The resistance of resistor R will be 190 Ω
The given resistors are connected in the series;
R = R1 + R2 +..... Rn
240 = 50 + R
R = 240 - 50
R = 190 Ω
Hence the resistance of resistor R will be 190 Ω
To learn more about the resistance refer to the link;
https://brainly.com/question/20708652
Related Questions
14
A measure of the gravitational force exerted on an object?
A Weight
B) Force
C)Air resistance
Answers
Answer:
C
Explanation:
Answer:
A) weight
Explanation:
Hope it helps :))
DUE TONIGHT, JUST NEED TO CONFIRM ANSWER
3. An object moves in uniform circular motion with a centripetal force of 4.5 N. Which of the following is true?
(A) The object’s velocity vector is constant in magnitude and direction.
(B) The object’s acceleration vector is constant in magnitude and direction.
(C) Both the object’s velocity and acceleration vectors change both their magnitudes and directions.
(D) Both the object’s velocity and acceleration vectors have constant magnitudes but change directions.
Answers
Answer:
the answer is D I THINK
Explanation:
What happens when a pebble lying on the ground is kicked?
A. Energy is completely lost.
B. Energy is created.
C. Energy is destroyed.
D. Energy is transferred.
Answers
Answer:
I'm 100% sure it's D. but if it isn't, sorry :(
explanation: energy is neither created nor destroyed, energy can be transferred from one object to another
PLEASE HELP I HAVE FINALSSS
Answers
Answer: 26.67 m/s
Explanation:
Given
Length traveled by the ball [tex]s=40\ m[/tex]
Time taken to reach the goal post is [tex]t=3\ s[/tex]
Initial velocity [tex]u=0\ m/s[/tex]
Using the second equation of motion
[tex]\Rightarrow s=ut+\frac{1}{2}at^2\\\Rightarrow 40=0+\frac{1}{2}a(3)^2\\\Rightarrow a=\frac{80}{9}\ m/s^2\\[/tex]
Now using
[tex]\Rightarrow v^2-u^2=2as\\\\\Rightarrow v^2-0=2\times \frac{80}{9}\times 40\\\\\Rightarrow v=\sqrt{\dfrac{80\times 80}{9}}=\dfrac{80}{3}\\\Rightarrow v=26.67\ m/s[/tex]
The velocity of ball will be 26.67 m/s
Tom puts a metallic cover over his car's windshield after parking. How does this control
the sun's rays during a sunny day?
Answers
Choose the correct words from the box to complete the definition of resistance.
current difficulty ease potential difference
The electrical resistance of a material is a measure of the ______________ of passing a ______________ through it.
Answers
Answer:
Opposition of passing a electric circuit
A sodium vapor lamp omit waves with the frequency of 5.26x10^14 Hz. What is the wavelength of light?
Answers
Answer:
[tex]\lambda=5.70\times 10^{-7}\ m[/tex]
Explanation:
The frequency of a sodium vapor lamp, [tex]f=5.26\times 10^{14}\ Hz[/tex]
We need to find the wavelength of light. The relation between wavelength, frequency and speed of light is given by :
[tex]c=f\lambda\\\\\lambda=\dfrac{c}{f}\\\\\lambda=\dfrac{3\times 10^8}{5.26\times 10^{14}}\\\\\lambda=5.70\times 10^{-7}\ m[/tex]
So, the wavelength of light is equal to [tex]5.70\times 10^{-7}\ m[/tex].
Which type of waves are able to travel through various types of media and space
a) body
b) electromagnetic
c) parabolic
Answers
Answer:
B
Explanation:
......................
How fast is a skydiver going after 5 seconds or free fall and how far did he fall
Answers
Answer:
It's typically around 120mph. You'll reach this speed a few seconds into your jump, so for those few moments straight out the door, you'll be falling a bit more slowly and therefore covering less distance. We usually estimate around 10 seconds for the first 1,000 feet, then 5 seconds for each 1,000 feet after that.
Explanation:
What determines the speed of a wind?
o The difference in air pressure between air masses.
O The moisture content of air over land.
O The altitude of the warmer air mass.
The moisture content of air over water.
Answers
Answer:
Answer: The difference in air pressure between air masses.
Answer:
The difference in air pressure between air masses.
Explanation:
The difference in air pressure, just like letting the higher-pressure air out of a balloon, determines the speed of the wind.
Gravitational potential energy (1) - masss (kg) x gravitational field strength (N/kg) x height (m)
1. Calculate the gravitational potential energy of the following masses on top of Trump tower which has a mass
of 202 m (g= 9.81 N/kg)
a) 100 kg
b) 90 kg
c) 45 kg
d) 58 kg
e) 1g
1) 1000 g
h) 1998
1) 1.5 kg
g) 100 g
Answers
[tex]\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Potential Energy.
Here lets calculate it one by one ;-
1.) P = mgh ==> 100*9.81*202===> 198162 Joules
2.) P = mgh ==> 90*9.81*202 ==> 178345.8 Joules
3.) P = mgh ===> 45*9.81*202 ===> 89172.9 Joules
4.) P = mgh ===> 58*9.81*202 ===> 114933.96 Joules
5.) P = mgh ===> 0.001*9.81*202 ===> 1.981 Joules
6.) P = mgh ===> 1.00*9.81*202 ===> 1981.62 Joules
7.) P = mgh ===> 1.998*9.81*202 ==> 3959.27 Joules
8.) P = mgh ===> 1.5*9.81*202 ===> 2971.43 Joules
9.) P = mgh ===> 0.1*9.81*202 ===> 198.162 Joules.
Above we calculated the potential energy for every mass given above.
PLEASE HELP ASAP!!!
Answers
Answer:
WRITE A ONE PAGE ESSAY TO EXPLAIN THE AUTHOR'S PURPOSE IN WRITING HOM SMART ARE ANIMAL
Explanation:
Which of these is not a standard unit?
a. second
b. metre
c. hand span
d. gram
Answers
Answer: Hand span
Explanation: Hand span is not a standard unit.
Second is the unit of time.
Meter is the unit of length or distance covered by an object.
Gram is the unit of weight of an object.
Hand span is not a standard unit. This is because the size of hand varies from person to person. Hence, the correct option is (c) "hand span".
Please help
What differentiates one layer of the atmosphere from one another?
Please help
Answers
Answer: The stratosphere and the troposphere are defined by the variation in temperature with height. Within a troposphere, the temperature drops as altitude increases, and drops fast enough for convection to occur. Whereas within a stratosphere, the temperature rises with increasing altitude. Features of the atmosphere change with altitude: density decreases, air pressure decreases, temperature changes vary. Different temperature gradients create different layers within the atmosphere. The lowest layer is the troposphere where most of the atmospheric gases and all of the planet's weather are located.
Explanation:
How do you find your target heart rate for a female
Answers
subtract your age from 220
Sound travels Faster through _____________ mediums.
A) Denser
B) Less Dense
C) Colder
D) Sound always travels at the same period
Answers
Answer:
I know for sure that it's either A or B have a great day sorry I don't know which one completely
The speed of sound through diamond is about 12,000 m/s. The speed of sound through wood is about 3,300 m/s. Which statement explains
why the speed of sound is different through these materials? (1 point)
Answers
Answer: They have different rigidities.
Explanation:
how are electromagnetic waves produced
Answers
Answer:
Electromagnetic waves are created by oscillating charges (which radiate whenever accelerated) and have the same frequency as the oscillation. Since the electric and magnetic fields in most electromagnetic waves are perpendicular to the direction in which the wave moves, it is ordinarily a transverse wave.
Answer: Electromagnetic waves are the combination of electric and magnetic field waves produced by moving charges.
The creation of all electromagnetic waves begins with a charged particle. This charged particle creates an electric field (which can exert a force on other nearby charged particles). When it accelerates as part of an oscillatory motion, the charged particle creates ripples, or oscillations, in its electric field, and also produces a magnetic field (as predicted by Maxwell’s equations).
Once in motion, the electric and magnetic fields created by a charged particle are self-perpetuating—time-dependent changes in one field (electric or magnetic) produce the other. Both electric and magnetic fields in an electromagnetic wave will fluctuate in time, one causing the other to change.
Electromagnetic waves (photons) are produced anytime a charged particle experiences a change in velocity.. The electromagnetic wave (radiation) that is produced when the charge particle changes it’s velocity is how energy is conserved. This energy is light.
Hope this helps have a awesome day/night❤️✨
Explanation:
What is the limiting factor of speed for an object falling through a vacuum?
Answers
⭐Air Resistance is the factor, which limits the speed of an object falling through the air...⭐
____________________________________________________
<Judge It Yourself...>
Hope it helps you! ヅ
✪ Be Brainly ✪
A layer of ethyl alcohol (n= 1.361) is on top of the water ( n=1.333) . At what angle relative to the normal to the interface of the two liquids is light totally reflected
Answers
Answer:
78.35°
Explanation:
THIS IS THE COMPLETE QUESTION BELOW;
A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected?
From Snell's Law,
(ni)/(nr) = Sin (θr) / Sin (θi)
Where
θi = Angle of Incidence
θr = Angle of refraction
ni = Refractive index given for ethyl alcohol
nr = Refractive index of medium from which light is refracted
ni = 1.361
nr = 1.333
, θr = 90° ( Critical Angle is reffered to as Angle of Incidence at refracted angle of 90°) (θi = θc)
(ni)/(nr) = Sin (θr) / Sin (θi)
1.361/ 1.333 = Sin (90°)/ Sin( θc)
1.021= 0.894/ Sin( θc)
Sin( θc)= (0.9794
θc = Sin⁻¹ 0.9794)
θc = 78.35°
The gravitational force between two objects in space is 800 million
newtons. If the distance between them is doubled, what size will the
gravitational force be (in millions of newtons)?
Answers
newtons = mass x _______
a) capacitance
b) inductance
c) gravitational field strength
Answers
Answer:
c) gravitational field strength
Hope it helps
Please mark me as the brainliest
Thank you
1. Using pollen grains placed in water,
explain how their motion supports the
idea that matter is not continuous.
Answers
hope it helps!!!!!!!!!!!!!!!
A 110 kg football player runs at 8 m/s and plows into an 80 kg referee standing on the field causing the referee to fly forward at 5.0 m/s. What is the momentum of the football player before the collision?
Find:
Given:
Relationship:
Solution:
Answers
Answer:
MOMENTUM of the football player before collision is 110×8 =880
Explanation:
Please help, it’s the last question and I’m bad at Physics
Answers
Answer:
The end velocity of the sculpture is 7.00 m/s²
Explanation
The equation needed here is v = √(2gh). Let's do it:
v = √(2 × 9.8m/s² × 2.5m)
v = √(49.0 m²/s²)
v = 7.0m/s
Funny enough the numbers given don't have the accuracy demanded. We're given is 2.5m which is only accurate to the tenths, and 30kg which is only accurate to the nearest integer. Also, presumably the acceleration due to Earth gravity that's provided is only 9.8m/s², so that's still only the nearest tenth. So taking those and asking to find the answer to the nearest hundredth is pointless.
But whatever. The given answer is correct to the nearest hundredth. 7.00m/s² To be sure, I plugged it into a form on a physics page that does exactly that, and the answer they gave was 7.0023745972349, so we have it rounded correctly.
Someone who strength trains twice a week can reduce their muscle loss percentage from % to % every decade.
Answers
Which of the following accurately describes how scientists use models?
A. To make science seem more complex and inaccessible
B. To take measurements of an object, process, or system as it is in
nature
C. To make direct observations of a natural object, process, or
system
D. To represent objects, processes, and systems that are too large,
too small, or too complex to study directly
Answers
Answer:
D
Explanation:
To represent objects, processes, and systems that are too large, too small, or too complex to study directly
The correct option is (d) To represent objects, processes, and systems that are too large, too small, or too complex to study directly.
Scientists employ models to comprehend phenomena they are unable to directly observe. Models aid scientists in their understanding of phenomena, no matter how big or little they may be, such as the universe or an atom. Additionally, they can aid in their understanding of systems like weather patterns.In a range of scientific disciplines, from physics and chemistry to ecology and the Earth sciences, scientific models are employed to explain and forecast the behavior of real things or systems.Models can aid in scientific prediction, understanding of processes, and communication of ideas.
The 4 types of scientific models -
Analogies diagrams, Physical replicas, Mathematical representations.Simulations on a computer.Learn more about scientific models brainly.com/question/14250312
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how are work and power shown when you are driving a car?
Answers
When driving a car, as you very well know, the engine is working, by enabling the car to move, and helping the tires roll. Power is used by enabling the car to turn on, the engine helps again.
Radon-220 is a radioactive gas. It escapes from underground rocks and causes a large part of the natural background radiation in the United Kingdom. It has an atomic number of 86. How many neutrons are there in its nucleus?
Answers
Answer: 134 neutrons are there in the nucleus of Radon-220
Explanation:
Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.
Thus, number of protons = atomic number = 86
Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.
Mass number = Number of protons + Number of neutrons
220 = 86 + Number of neutrons
Number of neutrons = 134
Whether or not the information on an online source is credible and factual, is up to the user to decide.
Answers
Answer:
Informational references provide only a limited amount of specific statistical information. false. Information should be________to ensure more than one source provides the same factual information.
Explanation:
Answer:
The statement presented above is TRUE. Yes, it's up to us whether to accept the statement whether as reliable or not. At the end of the day, it is our responsibility to know the facts and not let other people dictate what you have to think about. It has to be taken into account that you can decide for yourself.
Explanation: