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
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h = 4T/dgr
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A sample of mercury:
✔ conductor
A piece of glass:
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A negatively ionized lithium paste:
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Answers
The correct classification of each substance is as follows:
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Answers
Answer:
No
Explanation:
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Answers
Answer:
Explanation:
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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°
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B 10 N
C 1 N
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A 10N
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D 4 N
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A 100 N
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Answer:
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Explanation:
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Explanation:
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Answers
Answer:
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Explanation:
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a. Its magnitude increased and its direction changed.
b. Its magnitude increased but its direction remained the same.
c. Its magnitude remained the same but its direction changed.
d. Its magnitude and its direction both remained the same.
Answers
Answer:
d. Its magnitude and its direction both remained the same.
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
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The correct statement should be "Its magnitude remained the same but its direction changed". Option C is correct.
Given information:
A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s.
Now, the mass of the ball doesn't change and the magnitude of the velocity is also the same.
Momentum can be defined as the product of mass and velocity. It is a vector quantity because velocity is also a vector quantity, and it has magnitude and direction.
Now, the magnitude of momentum will be the same because mass and velocity don't change in magnitude.
The direction of velocity will be reversed. So, the direction of momentum will also be reversed.
Therefore, the correct statement should be "Its magnitude remained the same but its direction changed". Option C is correct.
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Answers
Answer:
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If you use the formula V= T times displacement you can find this out by doing the following-
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Answers
Answer:
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Time interval: t = 3 second.
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= 2 m/s².
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Answer:
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I think this much is enough , as more information is given in other answer if more is needed just comment me I will answer you there only.Another example of an object that has pressure energy
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Answer:
A balloon?
Explanation:
it inflates because of the air pressure inside
What is the net force acting on a jet that has a mass of 130,000kg and it accelerates at a rate of 6m/s as it takes off
Answers
PLEASE HELP ASAP!!
Select the correct answer.
According to this map, which county in Florida is most in need of safe rooms and hurricane ties?
A.
Hillsborough
B.
Jefferson
C.
Palm Beach
D.
Miami-Dade
Answers
Answer:
I think it's Miami-Dade
Explanation:
i hope this helps
Answer:
it is miami-dade!
Explanation:
a trolley of mass 20kg was originally at rest on a smoth horizontal surface. bu how much will it accelerate if a pulling force of 22N is applied on it horizontally?
Answers
Answer:
just divide 22 N by 20 kg to get the acceleration in m/s2
Explanation:
I hope this is right-
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A the more potential energy it has.
B the more kinetic energy it has.
C the faster its particles vibrate.
D the cooler it gets.
Answers
Answer:
b the more genetic energy
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1. brightness
2. wavelength
3. amplitude
4. reflection rate
Answers
Answer:
2. wavelength
Explanation:
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Just like other waves, light waves have a wavelength and amplitude. The wavelength determines the color; we will learn more about this in the lesson on color. The amplitude of a light wave determines the brightness. Just as large amplitudes in sound waves result in sounds with greater intensities (louder sounds), large amplitudes in light waves result in light with greater intensity (brighter light).
is boiling water in a kettle on a stove kinetic or potential energy?
Answers
Answer:
Boiling a kettle is an example of both thermal and kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object.
it's kinetic!
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What is the cheetahs momentum?
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Answer:
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A. They are far too large to be buried in the ground.
B. They are made mostly of soft tissues.
C. They contain too much protein to be preserved.
D. They contain chemicals that prevent the hardening of their bodies.
Answers
Answer:
The answer is B.
Explanation:
Since they are made up of soft tissues, they decompose become they become fossils.
is a rare disorder that includes the inability to feel pain.
A. Somatoform pain disorder
B. Congenital analgesia
C. Kinesthesis
D. Anesthesia
Please select the best answer from the choices provided
Ο Ο Ο
B.
D
Answers
The rare disorder that includes the inability to feel pain is called Congenital analgesia. That is option B.
What is Congenital analgesia?Congenital analgesia is defined as ,the name implies, a genetic disorder that rarely occurs which makes one not to be able to feel pain.
It is an autosomal recessive disorder in which there is genetic changes in the PMRD12 gene.
Therefore, the rare disorder that includes the inability to feel pain is called Congenital analgesia.
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What determines the speed of a wind?
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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.
A 5 kg object is moving downward at a velocity of 12 m/s and is
currently 2.6 meters above the ground.
calculate its kinetic energy
calculate its potential energy
calculate its mechanical energy
Answers
Answer:
the first one i think
Explanation: