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VMariaS [17]
3 years ago
11

Which one of the following

Physics
1 answer:
musickatia [10]3 years ago
6 0

Answer:

Current is calculated as the amount of charge that pass  a point on a circuit per time.

Explanation:

Electric current is defined as the amount of charge that passes a point on a circuit per unit time. The mathematical definition of electric current is given by :

I=\dfrac{q}{t}

Where

q is a charge (Coulomb)

t is time (in seconds)

The SI unit of electric current is A. It is equivalent to C/s. So, the correct option is (A).

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If an R = 1-kΩ resistor, a C = 1-μF capacitor, and an L = 0.2-H inductor are connected in series with a V = 150 sin (377t) volts
fgiga [73]

Answer

given,

R = 1-kΩ  = 1000 Ω

C = 1-μF

L = 0.2-H

V = V_max sin( ω t)

comparing

V = 150 sin ( 377 t)

ω = 377

\chi_c = \dfrac{1}{\omega C}

\chi_c = \dfrac{1}{377 \times 1 \times 10^{-6}}

\chi_c = 2652.5\Omega

\chi_L =377 \times 0.2

\chi_L =75.4\ \Omega

Impedance,

Z = \sqrt{R^2+(\chi_L-\chi_c)^2}

Z = \sqrt{1000^2+(75.4 -2652.5)^2}

Z = 2764.3 Ω

now,

V_{max} = 150 V

I_{max} = \dfrac{V}{Z}

I_{max} = \dfrac{150}{2764.3}

I_{max} = 0.0543

I_{max} = 54.3\ mA

3 0
3 years ago
(Fiqure 1) shows the velocity-versus-time graphs for two objects A and B the motion of the ohiecds Zach savs The aranh could rep
olchik [2.2K]

Answer:

a.neither of them is correct

b. Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.

c. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration

Explanation:

Fiqure 1) shows the velocity-versus-time graphs for two objects A and B the motion of the ohiecds Zach savs The aranh could represent two cars Zach traveling in opposite directions that pass each other." Victoria says, "No, I think they could be R cally from a bridge, rock A is thrown upward Victoria downward

ans :neither of them is correct

Previous Answers Submit VCorrect Figure 1 of 1

Part B V,

Why is Zach's statement wrong? Check all that apply

. A Zach's statement is not correct, since the objects move in the same direction for some time interval.

Ans: Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.

Previous Answers Request Answer Submit x Incorrect;

Try Again

Part C

Why is Victoria's statement wrong? Check all that apply Victoria's statement is not correct as the objects both should have been thrown either upward or downward

Answer:. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration gGraph

My explanation further from the graph will be that there are opposite bodies, one is accelerating with time , why the other is decelerating with time.

6 0
4 years ago
a girl pushes a cart to the left with a 100-N force. A boy pushes it to the right with a 50-N force. what is the net force exert
NNADVOKAT [17]

Answer:

50 to the left

Explanation:

150-100: 50 to the left

3 0
3 years ago
What is the quality of the sound of an ambulance's siren when it moves toward a stationary hearer? What is the quality of the so
Damm [24]

Answer:

A) As the ambulance's siren moves toward a stationary hearer, the quality of sound will have a higher pitch

B) As the ambulance's siren moves away from a stationary hearer, the quality of sound will have a lower pitch.

Explanation:

From Doppler effect, the closer the source of sound gets to the observer, the higher the frequency and in turn the higher the pitch.

Meanwhile, the farther a source goes from an observer, the lower the frequency of the sound and also the lower the pitch.

Thus, as the ambulance's siren moves toward a stationary hearer, the quality of sound will have a higher pitch.

As the ambulance's siren moves away from a stationary hearer, the quality of sound will have a lower pitch.

4 0
3 years ago
Read 2 more answers
I need the answer please help
timurjin [86]

Answer:

A) Inertia

Explanation:

Inertia is why objects tend to resist changes in their motion. Like a rolling ball will keep rolling unless we try to add friction to it, which then would stop the ball.

3 0
3 years ago
Read 2 more answers
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