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ANEK [815]
4 years ago
5

A thermometer calibrated in the Celsius scale and a thermometer calibrated in the Fahrenheit scale are used to measure the same

temperature. The numerical reading on the Fahrenheit thermometera) is less than that on the Celsius thermometerb) is equal to that on the Celsius thermometerc) is greather than that on the Celsius thermometerd) may be any of these , depending on the temperature
Physics
2 answers:
Dominik [7]4 years ago
7 0

Answer:

d) may be any of these , depending on the temperature

Explanation:

Let at temperature t , reading of both Celsius and Fahrenheit scale be same

using the formula of conversion

(F - 32) / 9 = C / 5

(t - 32) / 9 = t / 5

5t - 160 = 9t

t = - 40° Celsius .

For temperature above it , reading of  Fahrenheit scale will be more . For temperature below it Fahrenheit scale will show lesser reading than  Celsius

reading .

MrRissso [65]4 years ago
5 0

Answer:

its D

Explanation:

the guy above is very correct and the thermometer is calibrated on it

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Even when shut down after a period of normal use, a large commercial nuclear reactor transfers thermal energy at the rate of 150
Phoenix [80]

Answer:

The temperature of the core raises by 2.8^{o}C every second.

Explanation:

Since the average specific heat of the reactor core is 0.3349 kJ/kgC

It means that we require 0.3349 kJ of heat to raise the temperature of 1 kg of core material by 1 degree Celsius

Thus reactor core whose mass is 1.60\times 10^{5}kg will require

0.3349\times 1.60\times 10^{5}kJ\\\\=0.53584\times 10^{5}kJ

energy to raise it's temperature by 1 degree Celsius in 1 second

Hence by the concept of proportionately we can infer 150 MW of power will increase the temperature by

\frac{150\times 10^{6}}{0.53584\times 10^{8}}=2.8^{o}C/s

5 0
3 years ago
Pls help i begg youuuuu
Anna [14]
Pitch is the sensation of certain frequencies to the ear. High frequency = high pitch, low frequency = low pitch. 

f = c(speed of the wave) /  <span>λ (wavelength)

1. 343m/s / 0.77955m = 439.99 Hz   
     This corresponds to pitch A 

2. 343m/s / 0.52028m = 659.26 Hz
</span>     This corresponds to pitch E 
<span>
3. 343m/s / 0.65552m = 523.349 Hz
    </span>This corresponds to pitch C

4. using f = c /  λ
  λ = c / f<span>
     = 343m/s / 587.33 = 0.583999 m = 0.584 m

</span>
3 0
3 years ago
The electric field between the plates of a parallel-plate capacitor is horizontal, uniform, and has a magnitude E. Asmall object
kirza4 [7]

Answer:

m = 0.041 kg

Explanation:

As we know that the small particle is in equilibrium at an angle of 16 degree with the vertical

so here we can use force balance in vertical and horizontal direction

T cos\theta = mg

T sin\theta = qE

now from above equation we have

T = \sqrt{(mg)^2 + (qE)^2}

also by division of above two equations we have

\frac{qE}{mg} = tan\theta

qE = mg tan\theta

now from above equation again

T = \sqrt{(mg)^2 + (mg)^2 tan^2\theta}

T = mg sec\theta

0.420 = m(9.81) sec 16

m = 0.041 kg

3 0
3 years ago
How much work is needed to stretch this spring a distance of 5. 0 cm , starting with it unstretched?
densk [106]

The work done by the unstretched spring is 5 J.

<h3>What is the Hooke's law?</h3>

Hooke's law states that the extension of a given material is directly proportional to the force applied as log as the elastic limit is not exceeded. Thus we have to know that; F = Ke

F = force applied

K = force constant

e = extension

Using the graph;

K = F/e

F = 200N

e = 5 cm or 5 * 10^-2 m

K = 200N/ 5 * 10^-2 m

K = 4000 N/m

Now;

Work = 1/2Ke^2

Work = 0.5 *  4000 N/m * (5 * 10^-2 m)^2

Work = 5 J

Learn more about Hooke's law:brainly.com/question/13348278

#SPJ1

6 0
2 years ago
Which of the following is not an example of convection? Warm air rising from heated pavement The rolling motion of boiling water
Romashka-Z-Leto [24]

Answer: The handle of a frying pan on the stove

Explanation: Convection is the heat transfer done by the movement of a fluid, or the molecules on it. This can happen by the change on density from fluids, when a fluid tempeture rise, it expands, rising his volumen and decreasing his density. When this happens the fluid becomes lighter, so it moves.

The handle of a frying pan gets hotter but no molecular movement is done. It is between the same material there is a energy transfer from the source to the rest of the pan. This is called Conduction.

6 0
3 years ago
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