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3 years ago

Which clock do scientists use to measure time why

Physics

2 answers:

Mashcka [7]3 years ago

5 0

Scientists use Atomic clock to measure time

Anna35 [415]3 years ago

3 0

Scientists are actually working on a type of clock that is more accurate than the atomic clocks we use today. It is called an optical atomic clock and it measures atomic oscillations using light from the visible spectrum.

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Electron can only lose energy by transition from one allowed orbit to another ______ electromagnetic radiation

ozzi

Explanation:

Please solve this question as soon as possible. I need help with a solution

5 0

3 years ago

Lightning heats the surrounding air to ___. A. 30000C B. 300C C. 300000C D. 3000C

Blizzard [7]

A bolt of lightning<span>, which can reach temperatures of roughly 30,000 kelvins (53,540 degrees Fahrenheit). The sun, on the other hand, is eclipsed in this case, its surface temperature is just 6,000 kelvins (10,340 degrees Fahrenheit)
</span><span>So,it can be around 30,000 degrees.The answer is Choice A.</span>

3 0

3 years ago

Read 2 more answers

A car travels at a constant speed of 15 m/s for 2 minutes. The car increases its speed from 15 m/s to 25 m/s during the next min

Rzqust [24]

Answer:

Graph F.

Explanation:

From the question given above, the following information were obtained:

1. The car travelled at a constant speed of 15 m/s for 2 minutes. This implies that the car is already moving and the graph can not be drawn from the origin.

Therefore, graph G is wrong.

2. The car increases its speed from 15 m/s to 25 m/s during the next minute and travels at a constant speed of 25 m/s for 2 more minutes.

This implies that the graph of the motion will project upward.

Therefore, graph H and J are wrong.

From the illustrations above, graph F gives the correct discription for the motion of the car.

7 0

3 years ago

A particle moves along the x-axis. It is initially at the position 0.170 m, moving with a velocity of 0.190 m/s and acceleration

sukhopar [10]

Answer:

(a)-0.701m

(b)-0.674m/s

Explanation:

Given a = -0.24,m/s² Xo = 0.170m, u = 0.190m/s

X = Xo + ut +1/2at²

X = 0.170 + 0.190×3.6 + 1/2×(-0.24) 3.6² = -0.701m

(b) its velocity at the end of this time interval is v

v = u + at

= 0.190 + (-0.24)× 3.6 = -0.674m/s

7 0

4 years ago

Use the dimensional analysis and check the correctness of given equation (no spam ) plz:- PV= nRT

Viefleur [7K]

PV=nRT

Here

P=Pressure

V=Volume

n=Molarity

R=universal gas constant

T=Temperature.

LHS

$\\ \tt\bull\leadsto PV$

$\\ \tt\bull\leadsto [ML^2T^{-2}][M^0L^3T^0]$

$\\ \tt\bull\leadsto [ML^5T^{-2}]$

RHS

$\\ \tt\bull\leadsto nRT$

$\\ \tt\bull\leadsto [M^0L^{3}T^0][M^1 L^2 T^{-2}K^{-1}][M^0L^0T^0K^1]$

$\\ \tt\bull\leadsto [ML^5T^{-2}]$

LHS=RHS

hence verified

4 0

3 years ago

Which clock do scientists use to measure time why​

Which clock do scientists use to measure time why