Select the correct answer.

A person opens a door by applying a 10-N force perpendicular to it at a distance 0.90m from the hinges.

quester [9]

You faded out there before asking your question.
Here's some info that might be of interest:

Torque = (force) x (distance from the pivot) = (10 n) x (0.9 m) = 9 newton-meters

6 0

4 years ago

How does the function of the parts of the system contribute to its function as a whole

oksano4ka [1.4K]

Answer and explanation: Just as the organs in an organ system work together to accomplish their task, so the different organ systems also cooperate to keep the body running. For example, the respiratory system and the circulatory system work closely together to deliver oxygen to cells and to get rid of the carbon dioxide the cells produce.

4 0

3 years ago

For the circuit shown, R = 75.0 ohms, L= 55.0 mg, and C = 25.0 μC. The power source has 12.0 V arms and a frequency of 60.0 Hz.

Natasha_Volkova [10]

Explanation:

Given that,

Resistance R = 75.0 ohms

Inductance L = 55.0 mH

Capacitance $C = 25.0\ \mu C$

Voltage V = 12.0 V

Frequency f = 60.0 Hz

We need to calculate the angular frequency

Using formula of angular frequency

$\omega = 2\pi f$

Put the value into the formula

$\omega =2\times3.14\times60.0$

$\omega=376.8\ rad/s$

(a). We need to calculate the value of $X_{L}$

Using formula of $X_{L}$

$X_{L}=\omega\times L$

Put the value into the formula

$X_{L}=376.8\times55.0\times10^{-3}$

$X_{L}=20.724\ \Omega$

(b). We need to calculate the value of $X_{L}$

Using formula of $X_{C}$

$X_{C}=\dfrac{1}{\omega C}$

$X_{C}=\dfrac{1}{376.8\times25.0\times10^{-6}}$

$X_{C}=106.16\ \Omega$

(c). We need to calculate the value of Z

Using formula of impedance

$Z=\sqrt{R^2+(X_{L}-X_{C})^2}$

Put the value into the formula

$Z=\sqrt{75.0^2+(20.724-106.16)^2}$

$Z=113.68\ \Omega$

(d). We need to calculate the rms current

Firstly we need to calculate the current

Using formula of current

$I=\dfrac{V}{R}$

Put the value into the formula

$I=\dfrac{12.0}{75.0}$

$I=0.16\ A$

Using formula of rms current

$I_{rms}=\dfrac{I_{0}}{\sqrt{2}}$

$I_{rms}=\dfrac{0.16}{\sqrt{2}}$

$I_{rms}=0.113\ A$

(e). We need to calculate the rms voltage across the resistor

Using formula of rms voltage

$V_{rms}=I_{rms}\times R$

$V_{rms}=0.113\times75.0$

$V_{rms}=8.475\ V$

(f). We need to calculate the rms voltage across the inductor

Using formula of rms voltage

$V_{rms}=I_{rms}\times X_{L}$

$V_{rms}=0.113\times20.724$

$V_{rms}=2.342\ V$

(g). We need to calculate the rms voltage across the capacitor

Using formula of rms voltage

$V_{rms}=I_{rms}\times X_{C}$

$V_{rms}=0.113\times106.16$

$V_{rms}=11.99\ V$

(h). We need to calculate the dissipated power by the circuit

Using formula of dissipated power

$P=RI^2$

Put the value into the formula

$P=75.0\times0.113^2$

$P=0.958\ W$

Hence, This is the required solution.

3 0

3 years ago

You have three identical resistors that you can connect in various ways. Which of the following is NOT a possible value of the e

Snezhnost [94]

Answer: option c.

Explanation: 3 identical resistors can only have 3 configurations

1) all 3 resistors in series

2) all 3 resistors in parallel

3) 2 parallel resistors in series with 1 resistor.

Case 1 : all 3 resistors in series

Let us assume each of the resistor has resistance value R.

The total resistor (Rt) of 3 resistors in series is given as

Rt = R1 + R2 + R3

Since R1=R2=R3=R

Rt = R+R+R = 3R.

Case 2: all 3 resistors in parallel.

The equivalent resistance of resistors in parallel is given by the formulae below.

1/Rt = 1/R1 + 1/R2 + 1/R3

Since R1=R2=R3=R

1/Rt = 1/R + 1/R + 1/R

1/Rt = 1 +1 +1/ R

1/Rt = 3/R

3 * Rt = R

Rt = R/3

Case 3: 2 parallel resistor in series with one

First is to get the equivalent resistance of the 2 parallel resistor.

1/Rt = 1/R1 + 1/R2

But R1=R2=R

1/Rt = 1/R + 1/R

1/Rt = 1 + 1/R

1/Rt = 2/R

2 *Rt = R

Rt =R/2.

R/2 in series with R has an equivalent resistance as shown below

Rt = R/2 + R

Rt = R + 2R/2

Rt = 3R/2

Since all the possible 3 configuration are listed above and there is no other then option c ( 2R/3) is not possible to achieve

4 0

4 years ago

A pipe open at both ends resonates at a fundamental frequency fopen. When one end is covered and the pipe is again made to reson

xz_007 [3.2K]

Answer:

option (1)

Explanation:

fundamental frequency of open pipe, fopen = v/2L

fundamental frequency of closed pipe, f closed = v / 4L

By dividing both of them

f open = 2 x f closed

f open = two times f closed

f closed = 1 / 2 x f open

8 0

3 years ago