A 0.5 kg cheeseburger is lobbed at a particularly unhappy customer with a force of 10 N.

A coil of standard annealed copper having a resistance of 50 ohms at 15° is embedded in the core of a large transformer after th

iren [92.7K]

The temperature of the transformer after the transformer has been in operation for several hours at the given resistance is 21.2 degrees Celsius.

<h3>Relationship between resistance and temperature</h3>

The relationship between resistance and temperature is given as;

R = R₀( 1 + αΔθ)

From the first resistance, we will have the following equation,

R₁ = R₀( 1 + αΔθ)

50 = R₀(1 + 15α) ------ (1)

From the second resistance, we will have the following equation,

58 = R₀(1 + αT) ------ (2)

Divide (1) by (2)

$\frac{50}{58} = \frac{R_0(1 + 15\alpha)}{R_0(1 + T\alpha)} \\\\\frac{50}{58} = \frac{(1 + 15\alpha)}{(1 + T\alpha)} \\\\50(1 + T\alpha) = 58(1 + 15\alpha)\\\\50 + 50T\alpha = 58 + 870\alpha \\\\50(0.0425)T = (58- 50) + 870(0.0425)\\\\2.125T = 44.975\\\\T = 21.2\ ^0C$

Thus, the temperature of the transformer after the transformer has been in operation for several hours at the given resistance is 21.2 degrees Celsius.

Learn more about resistance and temperature here: brainly.com/question/2735534

8 0

2 years ago

If you were on a ship at sea, and a tsunami passed under your ship, what would probably be your reaction? explain.

swat32

<span>Extremely powerful single waves have no effect on ships at sea since the depth of water allows the energy to be distributed over hundreds and thousands of feet. In deep water, the bigger the wave, the faster it moves and the slower the surface changes height. As the wave gets into shallow waters, it slows down and can start to pile up to large heights.</span>

6 0

3 years ago

Identify two properties of a star that can be determined from its spectral class

Monica [59]

Answer:

temperature and relative motion

Explanation:

4 0

4 years ago

What volume of lead must be fastened underneath it to sink the wood in calm water so that its top is just even with the water le

astraxan [27]

The bouyancy force is:

Since the wood-lead system is completely submerged, the bouyancy force

is FB = ĎwgVl + ĎwgVb, where Ďw is the density of water,Vl

is the volume of

the piece of lead and Vb is the volume of the wooden block. The weight of the

  combined lead and wooden block is: W = ĎlgVl + ĎbgVb. Since the system is

in equilibrium, the bouyancy force must be equal to the total weight:

ĎwgVl + ĎwgVb = ĎlgVl + ĎbgVb

now we can solve for the volume of lead:

ĎwgVl â’ ĎlgVl = ĎbgVb â’ ĎwgVb

Vl(Ďw â’ Ďl) = Vb(Ďb â’ Ďw)

Vl =

Ďbâ’Ďw

Ďwâ’Ďl

Vb

Now we substitute the values for the density of lead Ďl = 11.3 Ă— 103kg/m3  ,

the density of the wood and the density of water Ďw = 1000kg/m3

. We get:

Vl =

600â’1000

1000â’11300

(0.6m Ă— 0.25m Ă— 0.08m) = 4.66 Ă— 10â’4m3

4 0

3 years ago

You are driving at 75 km/h. Your sister follows in the car behind at 75 km/h. When you honk your horn, your sister hears a frequ

OLga [1]

The ideal concept for solving this question is based on the Doppler effect, for which it is indicated that the source's listening frequency changes as the distance and the relative speed between the receiver and the transmitter are also changed. However, if the relative velocity between the two objects is zero as in the particular case presented (since both travel at 75km / h) we have that there will be no change in frequency.

Therefore the frequency that I hear and that my sister would listen would be the same.

5 0

3 years ago