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Andre45 [30]
3 years ago
10

There is constriction made in a clinical thermometer, why?​

Physics
1 answer:
lesya [120]3 years ago
3 0

Answer:

The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. ... It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb.

Explanation:

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(d)
deff fn [24]

Answer:

Frequency = 24 × 10⁸ Hz

Explanation:

Given the following data;

Speed = 3 × 10⁸ m/s

Wavelength = 0.125 meters

To find the frequency of the electromagnetic wave;

Mathematically, the speed of a wave is given by the formula;

Speed = Wavelength × frequency

Substituting into the formula, we have;

3 × 10⁸ = 0.125 × frequency

Frequency = (3 × 10⁸)/0.125

Frequency = 24 × 10⁸ Hz

3 0
3 years ago
Kenny and Chris are walking down the road. They walk a distance of 250meters in
ruslelena [56]

Explanation:

Distance is 250m

Time is 50sec

Formular

Speed= distance/time

Speed=250/50

Speed is 5m/s

If correct mark as brainliest

7 0
3 years ago
Read 2 more answers
What is the sun's spectrum
In-s [12.5K]
The sun spectrum is <span>The </span>Sun<span> emits light primarily in the visible </span>spectrum<span>, but it also emits at other wavelengths, as illustrated in the following figure.</span>
7 0
3 years ago
Find the half-life of a radioactive material if after 1 year 99.67% of the initial amount remains. (Round your answer to one dec
Svetradugi [14.3K]

Answer:

209.68 years

Explanation:

Let T be the half life.

t = 1 year

N = 99.67 % of No = 0.9967 No

Use the law of radioactivity

N = No x e ^(- λ t)

Where, λ is decay constant.

λ = 0.6931 / T

So,

0.9967 No = No x e^(- λ t)

0.9967 = e^(- λ t)

e^( λ t) = 1 / 0.9967 = 1.0033

 λ t = 3.3 x 10^-3

(0.6931 x 1) / T = 3.3 x 10^-3

T = 209.68 years

Thus, the halflife is 209.68 years.

3 0
3 years ago
A diver is on a board 3.00 m above the water . She jumps straight up at 3.25 m/s. . How many seconds later does she hit the wate
zzz [600]

Answer:

1.18 sec

Explanation:

v = 0

u = 3.25m/s

v = u - gt

t1 = u/g = 3.25/9.8 = 0.332 s

height above board = v²/2g =

3.25²/(2×9.8) = 0.54 m

time to fall from there to water

t2 = √(2h/g) = √(2(3+ 0.54)/9.8) = 0.85 s

total time = t1 + t2

total time = 0.85 + 0.332 = 1.182 s

6 0
3 years ago
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