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3 years ago

Which watch is used by scientists for correct measurement of time?

Physics

2 answers:

timurjin [86]3 years ago

3 0

Answer:

It’s the atomic clock

Explanation:

yulyashka [42]3 years ago

3 0

Atomic Watch, the third choice

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The law of conservation of matter states that during a chemical reaction

Sveta_85 [38]

This law states that, despite chemical reactions or physical transformations, mass is conserved — that is, it cannot be created or destroyed — within an isolated system

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3 years ago

4- Protein foods?? pls answer these i really need these

vampirchik [111]

The #1 answer would be meats and eggs. But, as a veggan, I present you with meatless protien-rich food!

1 - Pea protein (used in Beyond Meat, which tastes just like meat btw!)

2 - Soy protein such as tofu

3 - Nuts

4 - Beans! oml so many beans have MORE protien than meat!! ikr!?!?

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2 years ago

How do organisms get the energy they need

matrenka [14]

Answer:

consumers get energy from eating other things plant from sun

Explanation:

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3 years ago

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What are some of the characteristics scientists are looking for when they search for other Earth-like planets?

Yanka [14]

The ability to sustain life
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Hope this helped!
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3 years ago

The momentum of a falling rock is found to be 200 kg m/s. What is the mass of the rock if it falls with a velocity of 5.0 m/s

Snezhnost [94]

Answer:

$\boxed {\boxed {\sf 40 \ kilograms}}$

Explanation:

Momentum is the product of velocity and mass. The formula is:

$p=m*v$

We know the rock is falling. Its momentum is 200 kilograms meters per second and its velocity is 5 meters per second. Substitute the values into the formula.

$200 \ kg \ m/s = m * 5.0 \ m/s$

We are solving for m, the mass. We must isolate the variable. It is being multiplied by 5 meters per second. The inverse of multiplication is division, so we divided both sides by 5.0 m/s.

$\frac{200 \ kg \ m/s}{5.0 \ m/s}=\frac{ m* 5.0 \ m/s }{5.0 \ m/s}$

$\frac{200 \ kg \ m/s}{5.0 \ m/s}=m$

The units of meters per second (m/s) cancel.

$\frac{200 \ kg}{5.0 } =m$

$40 \ kg = m$

The falling rock has a mass of 40 kilograms.

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2 years ago