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Given two different resistances, how does the rate of joule heating in them differ if they are connected to a fixed voltage sour

Mkey [24]

In series combination less rate of joule hating should be observed as compared to when connected in parallel combination .

Joule heating, also known as resistive, resistance, or Ohmic heating, is the process by which the passage of an electric current through a conductor produces heat.

Joule's first law states that the power of heating generated by an electrical conductor equals the product of its resistance and the square of the current:

When two or more resistors are connected end to end consecutively, they are said to be connected in series combination. The combined resistance of any number of resistances connected in series is equal to the sum of the individual resistances.

When two or more resistances are connected between the same two points, they are said to be connected in parallel combination. The reciprocal of the combined resistance of a number of resistances connected in parallel is equal to the sum of the reciprocals of all the individual resistances.

Rate of joule heating can be calculated by the formula

Power = $V^{2}$ / R

V = voltage

R = resistance

When both are connected in series than their equivalent resistance will be more as compared to when they are connected in parallel.

Power is inversely related to resistance , if voltage is constant

In series combination less rate of joule hating should be observed as compared to when connected in parallel

To learn more about series combination here

brainly.com/question/16800236

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3 0

2 years ago

Select all statements that are true about electric potential (voltage). Group of answer choices it's a vector it depends on the

garri49 [273]

Answer:

See explaination

Explanation:

a) The alternate hypothesis for the study is:

H1: There is a significant difference between mean grade of male and female students.

b) The null hypothesis is:

H0: There is no significant difference between mean grade of male and female students.

c) The Level of Significance is 0.05

d) The computed t critical value for the study is 0.632

e) The P-value of the test is 0.531

f) Conclusion: The p-value of t test is greater than 0.05. Hence we accept null hypothesis at 5% level of significance and conclude that there is no significant difference between mean grade of male and female students

Check attached file for further solution

3 0

3 years ago

What is the deceleration (in m/s2) of a rocket sled if it comes to rest in 1.7 s from a speed of 1020 km/h? (Such deceleration c

fgiga [73]

Answer:

40.47m/s²

Explanation:

Acceleration is the change in velocity of a body with respect to time.

Acceleration = change in velocity/time

Given speed = 1020km/hr

Time = 1.7s

Converting 1020km/hr to m/s we have;

(1020×1000/3600)m/s

= 1,020,000/3,600

= 283.3m/s

Acceleration = 283.3/7

Acceleration = 40.47m/s²

Deceleration is therefore 40.47m/s²

6 0

3 years ago

A baseball player throws a ball horizontally at the same moment another baseball player jobs a second ball straight down from th

attashe74 [19]

I don't know what you mean when you say he "jobs" the other ball, and the answer to this question really depends on that word.

I'm going to say that the second player is holding the second ball, and he just opens his fingers and lets the ball drop, at the same time and from the same height as the first ball.

Now I'll go ahead and answer the question that I've just invented:

Strange as it may seem, both balls hit the ground at the same time ... the one that's thrown AND the one that's dropped. The horizontal speed of the thrown ball has no effect on its vertical acceleration, so both balls experience the same vertical behavior.

And here's another example of the exact same thing:

Say you shoot a bullet straight out of a horizontal rifle barrel, AND somebody else drops another bullet at exactly the same time, from a point right next to the end of the rifle barrel. I know this is hard to believe, but both of those bullets hit the ground at the same time too, just like the baseballs ... the bullet that's shot out of the rifle and the one that's dropped from the end of the barrel.

7 0

3 years ago

A carousel is moving with uniform circular motion. The centripetal acceleration of the ride is * 1 point circular

finlep [7]

> A carousel is moving with uniform circular motion. The centripetal acceleration of the ride is:

Centripetal acceleration is always directed toward the center of motion

> Where should a force be applied on a lever arm to produce the most torque?

farthest from the axis of rotation

> A boy can raise a rock that weighs 120 N by using a lever and applying a force of 25 N.

What is the mechanical advantage of the lever?

Simply divide the weight by the force applied:

120 / 25 = 4.8

> A pebble that is 3.81 m from the eye of a tornado has a tangential speed of 124 m/s. What is the magnitude of the pebble's centripetal acceleration?

Centripetal acceleration is calculated using the formula:

a = v^2 / r

a = (124 m/s)^2 / 3.81 m

a = 4,035.70 m/s^2 ~ 4036

> A dog sits 1.25 m from the center of a merry go round and revolves at a tangential speed of 2.0 m/s. If the dog's mass is 19.3 kg, what is the magnitude of the centripetal force on the dog?

a = v^2 / r

a = (2.0 m/s)^2 / 1.25 m

a = 3.2 m/s^2

The force is:

F = m a

F = 19.3 kg * 3.2 m/s^2

F = 61.8 N

> A ball attached to a string is whirled in a circle. If the string breaks, what causes the ball to move in a straight line?

The force which is directed away from the center of the motion: centrifugal force

> Find the magnitude of the gravitational force exerted on a 66.5 kg astronaut on the surface of Planet X if the planet has a radius of 4.40 x 10⁶ m and a mass of 8.43 x 10²³ kg.(Use G= 6.67 x 10⁻¹¹ Nm/kg²)

We use the formula:

F = G m1 m2 / r^2

F = 6.67 x 10⁻¹¹ Nm/kg² * (66.5 kg) * (8.43 x 10²³ kg) / (4.40 x 10⁶ m)^2

F = 193 N

> How would the speed of the Earth's orbit change if the Earth's distance from the Sun increased by 9 times?

The orbital speed is related to distance from the formula:

v = sqrt (GM / r)

where r is the distance from Earth to Sun

so if r’ = 9 r

v = sqrt (GM / 9r)

v = (1/3) sqrt (GM / r)

Therefore: Decrease by a factor of 3

> What is the efficiency of a crane that requires 28,000 J of energy to lift a 200 kg object 10 meters?

The total work done is:

Work = 200 kg * 9.8 m/s^2 * 10 m

Work = 19,600 J

So efficiency is:

efficiency = 19,600 / 28,000 * 100% = 70%

> What is the force required to produce a 1.4 Nm torque when applied to a door at a 60.0º angle and 0.40 m from the hinge?

The perpendicular component of the applied force is:

F * sin(60°) = 0.866F N

Since the moment arm is 0.40 m, the torque is:

(0.866F N)*(0.4 m) = 0.3464F N-m

This torque is equal to a value of 1.4 N-m, therefore

0.3464F = 1.4

F = 4.0 N

3 0

3 years ago

Dont know what to type hereok chat meh​

Dont know what to type hereok chat meh