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RideAnS [48]
3 years ago
14

Which is colder, 0°C or 20°F?

Physics
2 answers:
Allushta [10]3 years ago
8 0
20 degrees F because 0 degrees celcius is around 32 degrees F 
Mashutka [201]3 years ago
7 0

In order to compare the two temperatures, we need to convert 20°F into Celsius. The formula we need to use is:

T(^{\circ}C)=\frac{5}{9}(T(^{\circ}F)-32)

Substituting 20°F, we find

T(^{\circ}C)=\frac{5}{9}(20^{\circ}F-32) =-6.7^{\circ}C


And this is less than 0°C, so the answer is

20°F is colder than 0°C.


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Answer:

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Explanation:

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3 years ago
The surface charge density on an infinite charged plane is - 2.10 ×10−6C/m2. A proton is shot straight away from the plane at 2.
inn [45]

Explanation:

Formula to calculate electric field because of the plate is as follows.

         E = \frac{\sigma}{2 \times \epsilon_{o}}

            = \frac{2.10 \times 10^{-6}}{2 \times 8.85 \times 10^{-12}}

           = 1.18 \times 10^{5} N/C

Now, we will consider that equilibrium of forces are present there. So,

                   ma = qE

       a = \frac{1.6 \times 10^{-19} \times 1.18 \times 10^{5}}{1.67 \times 10^{-27}}

          = 1.13 \times 10^{13} m/s^2

According to the third equation of motion,

         v^{2} = 2 \times a \times d

or,      d = \frac{v^{2}}{2d}

             = \frac{(2.4 \times 10^{6})^{2}}{2 \times 1.13 \times 10^{13}}

             = 0.254 m

Thus, we can conclude that the proton will travel 0.254 m before reaching its turning point.

7 0
3 years ago
A student places two books on a table. One book weighs less than the other book
Gnoma [55]
The book that weighs less
6 0
2 years ago
A bird is flying east at 5.2 kilometers/hour relative to the air. There's a crosswind blowing at 3.1 kilometers/hour toward the
alexandr402 [8]

Answer:

r=6.05km/hr

z=59.1 degree to the horizontal

Explanation:

A bird is flying east at 5.2 kilometers/hour relative to the air. There's a crosswind blowing at 3.1 kilometers/hour toward the south relative to the ground. What is the bird's velocity relative to the ground? State your answer to one decimal place

can be solved using pythagoras theorem

r^2=o^2+a^2

r^2=5.2^2+3.1^2

r^2=36.65

r=6.1km/hr is te birds velocity relative to the ground

tanz=5.2/3.1

z=tan^-1(5,2/3.1)

z=59.1 degree to the horizontal

7 0
3 years ago
Read 2 more answers
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