Ask question

Ask question

All categories

3 years ago

14

Find the capacitance at which the power dissipated by the resistor would be maximized if the circuit is driven at a frequency of

25 hz. (that is, the lrc circuit is connected to a power supply with a frequency of 25 hz.)

1 answer:

Dmitry [639]3 years ago

6 0

Sssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

You might be interested in

How is urine produced

Tom [10]

Urine is a liquid by-product of metabolism in humans and in many other animals. Urine flows from the kidneys through the ureters to the urinary bladder. Urination results in urine being excreted from the body through the urethra.

5 0

3 years ago

Read 2 more answers

Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with the

scoundrel [369]

Answer:

F = 0.1575 N

Explanation:

When the third sphere touches the first sphere, the charge is distributed between both spheres, then now the first sphere has only half of his original charge.

In this moment then

Sphere one has a charge = Q/2

Sphere three has a charge = Q/2

Now when the third sphere touches the second sphere again the charge is distributed in a manner that both sphere has the same charge.

How the total charge is Q = Q/2 + Q = 3/2Q, when the spheres are separated each one has 3/4Q

Sphere two has a charge = 3/4Q

Sphere three has a charge = 3/4Q

The electrostatic force that acts on sphere 2 due to sphere 1 is:

F = $\frac{kQ_{1}Q_{2} }{r^{2} }$

F= $\frac{K(Q/2)(3Q/4)}{r^{2} }$

how $\frac{KQ^{2} }{r^{2} }$ = 0.42

Then

F = $\frac{0.42*3}{8}$

F = 0.1575 N

3 0

3 years ago

A painter sits on a scaffold that is connected to a rope passing over a pulley. The other end of the rope rests in the hands of

Doss [256]

Solution :

a). From Newtons second law,

F = ma

The total tension force is 2T.

∴ 2T - (m + M)g = (m+ M)a

Then

$a=\frac{2T-(m+M)g}{m+M}$

$a=\frac{2\times 600-(52+63)9.8}{52+63}$

$=0.63 \ m/s^2$

b). From the person,

F = ma

T - Mg + N = Ma

or N = Ma + Mg - T

= (63 x 9.8) + (52 x 9.8) - 600

= 617.4 + 509.6 - 600

= 527 N

6 0

3 years ago

Doug is driving a golf ball off the tee. His downswing takes 0.50sec from the top of the swing until ball impact. At the top of

Dmitry [639]

D.eeeeeeezzzzzzzz nuuuuutttttssss!

6 0

3 years ago

A 1.4kg block and a 2.7kg block are attached to opposite ends of a light rope. The rope hangs over a solid, frictionless pulley

leonid [27]

Answer:

$32.67 m/s^2$

Explanation:

27 cm = 0.27 m

As the blocks are hanging on 2 sides of the pulley, their difference in mass would generate a net force toward the heavier side:

Let g = 9.81 m/s2

F = g(2.7 - 1.4) = 9.81*1.3 = 12.753 N

This force would generate a torque at 0.27 m moment arm

T = F*r = 12.753*0.27 = 3.44 Nm

The moment of inertia of the solid disk:

$I = mR^2/2$

Where m = 0.78 kg is the disk mass and R = 0.27 m is the radius of the disk.

$I = 0.780*27^2/2 = 0.028431 kgm^2$

So the angular acceleration of the torque is

$\alpha = T/I = 3.44 / 0.028431 = 121 rad/s^2$

So the linear acceleration is its angular component times radius

$a = \alpha r = 121 * 0.27 = 32.67 m/s^2$

3 0

3 years ago