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Airida [17]
3 years ago
11

Mark the correct statement: a) Charges flow through a circuit b) voltage is applied across the circuit c) voltage is the ratio o

f energy per coulomb of charge d) All of the above e) none of the above
Physics
1 answer:
Gennadij [26K]3 years ago
8 0

Answer:

The correct option is;

d) All of the above

Explanation:

a) In an electric circuit through which electric current flows, it is due to the electric charges which can be the negatively charged electrons or the positively charged protons

b) Voltage is the potential difference that results in current flowing through the circuit, therefore, the voltage is applied across the circuit through which current flows

c) The voltage which is the electric potential difference is the change in potential energy in joules of a given system due to the movement of a test charge (in Coulombs) between points in the electric field, ΔE, divided by the value of the test charge, 'q'

V = ΔE/q

Therefore, all of the above are correct.

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Compared to the amount of radiation received from the Sun, about how much radiation does the surface of the earth receive from t
babymother [125]

Answer:

https://earthobservatory.nasa.gov/features/EnergyBalance#:~:text=The%20atmosphere%20absorbs%2023%20percent,surface%20radiates%20only%2012%20percent.

Explanation:

5 0
3 years ago
Part A: A group of students performed the same "Ohm's Law" experiment that you did in class. They obtained the following results
pentagon [3]

Answer:

Kindly check explanation

Explanation:

Given the data:

Trial V (volts) I (mA)

1 1.00 7.2

2 2.10 14.0

3 3.10 20.7

4 4.00 27.2

5 4.90 32.2

Slope = Rise / Run

Rise = y2 - y1 = 32.2 - 7.2 = 25

Run = x2 - x1 = 4.9 - 1.0 = 3.9

Slope = 25 / 3.9 = 6.410

y = mx + c

The intercept, c

Take the point ( 1; 7.2)

Put x = 0

7.2 = 6.410(1) + C

7.2 - 6.410 = C

C = 0.79

3 0
3 years ago
The thermometer reading 70◦Fis placed in an oven preheated to a constant temperature. Through the glass window in the oven door,
ValentinkaMS [17]

Answer:

T0=390 degF

Explanation:

The thermometer reading 70◦Fis placed in an oven preheated to a constant temperature. Through the glass window in the oven door, an observer records that the thermometer reads 110◦F after 12 minutes and 145◦F after 1 minute. How hot is the oven? Newton’s law of cooling yields the following differential equationdTdt=k(T−T0), whereT0 is the ambient temperature.

If T is temperature, then by Newton’s law

dTdt=-k(T−T0)

Where

T0− is temperature of oven  

∫\frac{dT}{T-T0} =\int\limits^0.5_0 {-k} \, dt

ln(T-T0), from 110 to 70=-kt, from 1/2 to 0

ln(110-T0)-ln(70-T0)=-k(1/2-0)

2in\frac{110-T0}{70-T0} =-k\\k=-2ln\frac{T0-110}{T0-70} ...........................1

integrating the LHS of the equation from 110 to 145F

∫∫∫\frac{dT}{T-T0} =\int\limits^1_0.5 {-k} \, dt

ln(145-T0)-ln(110-T0)=-k(1-1/2)

2ln145-T0/(110-T0)=-k

k=-2lnT0-145/(T0-110).......................2

couplijng equatiuon 2 with 1

(T0-110)^2=(T0-70)(T0-145)

T0^2-220T0+12100=T0^2-215T0+10150

5T0=1950

T0=390 degF

5 0
3 years ago
A bat produces a sound at 17,250Hz and wavelength 0.019m. What is<br> the speed of the sound?
EleoNora [17]

Explanation:

v = f × /\

v = 17250 × 0.019

v = 327.75ms²

7 0
3 years ago
An example of unprofessional behavior is?
nika2105 [10]
B, gossiping is unproessional
7 0
3 years ago
Read 2 more answers
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