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Sophie [7]
3 years ago
7

Why are unit of length mass and time independent with each other?​

Physics
1 answer:
mariarad [96]3 years ago
4 0
Масса (килограмм), длина (метр) и время (секунда) - это 3 из 7 основных единиц в системе СИ.

Базовые единицы произвольно определены как то, что они есть, поэтому они не могут быть получены.

Все другие единицы в системе СИ являются производными от 7 основных единиц, таких как скорость (метр / секунда).

Остальные 4 - это температура (Кельвин), количество вещества (моль), электрический ток (ампер) и светимость (кандела).
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At a country music festival, a band is playing at the end of a crowded
Anna11 [10]

Answer:

t=4.86s

Explanation:

To find the wavelength you use the following formula:

v=\lambda f

v: speed of sound = 343m/s

f: frequency = 400Hz

λ: wavelength of the sound

By doing λ the subject of the formula and replacing the values of f and v you obtain:

\lambda=\frac{v}{f}=\frac{343m/s}{400Hz}=0.85m

Now, to calculate the time that sound takes to reach the last row you use:

t=\frac{d}{v}

t: time

d: distance to the last row = 1947m

t=\frac{1947m}{400Hz}=4.86s

hence, the time is 4.86s

4 0
3 years ago
How many electrons can a nucleas hold
Hoochie [10]
A nuclear can hold 2 electrons
5 0
2 years ago
A 2kg toy car traveling at 2m/s strikes a second toy car at rest. The mass of the second toy car is 3. The two stock together an
Nutka1998 [239]
Mass of first car = Initial mass (Mi) = 2 kg
Initial velocity (Vi) = 2 m/s

Mass of both cars together = Final mass (Mf) = 2 + 3 kg = 5 kg
Final Velocity (Vf) = ?

Applying law of conservation of momentum,

Mi x Vi = Mf x Vf
2 x 2 = 5 x Vf
Vf = 4/5 = 0.8 m/s

7 0
2 years ago
Which of these galaxies is most likely to be oldest?
ycow [4]

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a galaxy observed at a distance of 5 billion light-years

8 0
2 years ago
How do you calculate the volume and density of something that weighs 20 grams?
Nostrana [21]
Mass divided by volume is density, while mass times density is volume. you cannot calculate density without volume and you cannot calculate volume without density.
i believe that's the answer.
oh gosh i didn't realize my middle school education involved high school stuff.
6 0
3 years ago
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