1 year ago

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------

Physics

1 answer:

Ilia_Sergeevich [38]1 year ago

7 0

Answer:

leaves will deverge

Explanation:

because of the nagwtive charge will become positive

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An LR circuit contains an ideal 60-V battery, a 42-H inductor having no resistance, a 24-ΩΩ resistor, and a switch S, all in ser

s2008m [1.1K]

Answer:

1.6 s

Explanation:

To find the time in which the potential difference of the inductor reaches 24V you use the following formula:

$V_L=V_oe^{-\frac{Rt}{L}}$

V_o: initial voltage = 60V

R: resistance = 24-Ω

L: inductance = 42H

V_L: final voltage = 24 V

You first use properties of the logarithms to get time t, next, replace the values of the parameter:

$\frac{V_L}{V_o}=e^{-\frac{Rt}{L}}\\\\ln(\frac{V_L}{V_o})=-\frac{Rt}{L}\\\\t=-\frac{L}{R}ln(\frac{V_L}{V_o})\\\\t=-\frac{42H}{24\Omega}ln(\frac{24V}{60V})=1.6s$

hence, after 1.6s the inductor will have a potential difference of 24V

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3 years ago

Sladkaya [172]

The repel each other.

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3 years ago

The current in resistor Y is..?

Aliun [14]

(A)

Explanation:

We can see that the resistors are connected in parallel so all of them have the same voltage of 100 V. We also know that

$P = VI$

Since resistor Y dissipates 100 W of power, we can solve for the current as

$I = \dfrac{P}{V} = \dfrac{100\:\text{W}}{100\:\text{V}} = 1.0\:\text{A}$

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2 years ago

What are some things that you do to make tasks like cleaning your room or doing the dishes more fun?

Anna007 [38]

Answer:

You can listen to music while doing either one, or you can get someone else to help you that way you have someone to talk to also you finish faster.

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2 years ago

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jason hits a baseball off a tee toward right field. the ball has a horizontal velocity of 10 m/s and lands 5 meters from the tee

Leni [432]

Answer:

The height is 1,225 meters

Explanation:

DistanceX= speedX × time ⇒ time= (5 meters) ÷ (10 meters/second) = 0,5 seconds

DistanceY= high= (1/2) × g × (time^2) = (1/2) × 9,8 (meters/(second^2)) × 0,25 (second^2) = 1,225 meters

8 0

3 years ago

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------​

fill in the blank ,if a charge body touches the disc of an uncharged electroscope the leaves ------------------