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3 years ago

Which layer of the atmosphere has the lowest density?

1 answer:

6 0

Hello,

The exosphere is the lowest<span> in density of the </span>layers of the atmosphere.

The higher up you get into the atmosphere, the lower the density becomes. Thus, the troposphere has the highest density of the five layers.

Faith xoxo

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A person drops a 2.00 kg ball off a building. what is the force of weight on the ball?

Lostsunrise [7]

Explanation:

Given

mass (m) = 2 kg

acceleration due to gravity (g) = 10 m/s²

Force (F) = ?

We know

F = m * a

= 2 * 10

= 20 N

The force is 20 N.

Hope it will help :)❤

8 0

3 years ago

A 2.2-m-long steel rod must not stretch more than 1.2 mm when it is subjected to a 8.5-kN tension force. Knowing that E = 200 GP

kodGreya [7K]

Answer:

a) 0.00996 m

b) 109090909 Pa

Explanation:

Unit conversions:

$E = 200GPa = 200\times10^9 Pa$

1.2 mm = 0.0012 m

8.5 kN = 8500 N

If the 2.2m rod cannot stretch more than 0.0012 m, its maximum strain is

$\epsilon = \frac{\Delta L}{L} = \frac{0.0012}{2.2} = 0.000545455$

With elastic modulus being E = 200 GPa, then its maximum stress must be

$\sigma = E\epsilon = 200\times10^9*0.000545455 = 109090909 Pa$

Knowing the tension force being F = 8500 N, we can calculate the appropriate cross section area

$A = \frac{F}{\sigma} = \frac{8500}{109090909} = 7.79\times10^{-5}m^2$

And its corresponding diameter is

$A = \pi d^2/4$

$7.79\times10^{-5} = \pi d^2/4$

$d^2 = \frac{4*7.79\times10^{-5}}{\pi} = 9.92\times10^{-5}$

$d = \sqrt{9.92\times10^{-5}} = 0.00996 m \approx 1 cm$

7 0

3 years ago

If the pendulum is taken into the orbiting space station what will happen to the bob? if the pendulum is taken into the orbiting

mezya [45]

Check the attached file for the answer.

3 0

4 years ago

A large truck has more inertia than small car because it has more__

taurus [48]

The large truck can rest at a stable equilibrium as compare to the small,from the definition of inertia, <span>Inertia is the tendency of an object to remain at rest or in motion.</span>

6 0

3 years ago

explain how you can determine if a chemical reaction a single replacement reaction or a double replacement reaction

Kobotan [32]

However, there is one type of double-replacement reaction that we can predict: the precipitation reaction. A precipitation reaction occurs when two ionic compounds are dissolved in water and form a new ionic compound that does not dissolve; this new compound falls out of solution as a solid precipitate.

8 0

3 years ago