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3 years ago

. Why are SI units helpful to scientists especially when describing objects?

Physics

1 answer:

Soloha48 [4]3 years ago

6 0

Si units are understood by scientists all over the world

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Through the process of transpiration, plants do what?

Evgesh-ka [11]

Well, the process of TRANSPIRATION deals with the release of water to the environment by plants, it is mostly in the form of vapour and is released into the atmosphere. Hope i helped, Have a nice day

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3 years ago

What is the magnitude of velocity for a 2,000 kg car possessing 3,000 kg.m/s of<br> momentum?

yanalaym [24]

Answer:

The product of the mass and the volume is known as momentum.

According to the law of momentum, it is stated that the two or more bodies remain in a constant state unless an external force is applied in an isolated room.

Momentum depends on the following:-

Mass

Velocity

Momentum = MASS \ X \ VOLUMEMomentum=MASS X VOLUME

\begin{gathered}momentum = 3000kgm/s\\\\mass = 2000kg\\\\velocity =\frac{momentum}{mass}\\\\v= \frac{3000}{2000} \\\\v= 1.5m/s\end{gathered}

momentum=3000kgm/s

mass=2000kg

velocity=

mass

momentum

2000

3000

v=1.5m/s

3 0

3 years ago

A car is travelling at a velocity of 20m/s. After 30sec it covers a distance of 1200 m. Calculate the acceleration of the car an

Umnica [9.8K]

Answer:

Acceleration: $a = 1,3333 \frac{m}{s^{2} }$

Final velocity: $v = 60 \frac{m}{s}$

Explanation:

To calculate the acceleration, you start from the formula:

$s = v_i t+\frac{1}{2}at^{2}$

Thus:

$a = \frac{ 2(s - v_it)}{t^{2}}$

Now that you have the accelration, you can use the this formula to calculate the final speed:

$a = \frac{v_f - v_i}{\Delta t}$

Thus:

$v_f = a \Delta t + v_i$

8 0

3 years ago

Select the correct answer. What does the law of conservation of energy state? A. Energy can be created from nothing. B. Energy c

Anarel [89]

Answer: c

Explanation:

4 0

3 years ago

Read 2 more answers

At resonance, what is impedance of a series RLC circuit? less than R It depends on many other considerations, such as the values

denis23 [38]

Answer:

at resonance impedence is equal to resistance and quality factor is dependent on R L AND C all

Explanation:

we know that for series RLC circuit impedance is given by

$Z=\sqrt{R^2+\left ( X_L-X_C \}right )^2$

but we know that at resonance $X_L=X_C$

putting $X_L=X_C$ in impedance formula , impedance will become

Z=R so at resonance impedance of series RLC is equal to resistance only

now quality factor of series resonance is given by

$Q=\frac{\omega L}{R}=\frac{1}{\omega CR}=\frac{1}{R}\sqrt{\frac{L}{C}}$ so from given expression it is clear that quality factor depends on R L and C

3 0

3 years ago