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kondor19780726 [428]

3 years ago

6

emergency plsss is copper stronger than bricks or that's all the way the opposite pls write ur answer clearly n' I will give 15

points and mark brainliest who answers first so hurry up

1 answer:

Usimov [2.4K]3 years ago

3 0

Copper is stronger than bricks!

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Where is nitrogen found?

iren2701 [21]

It found on Earth atmosphere.

3 0

3 years ago

A spacecraft in the shape of a long cylinder has a length of 100 m, and its mass with occupants is 1 480 kg. It has strayed too

maks197457 [2]

Answer:

2352645198509.9604 m/s²

Explanation:

G = Gravitational constant = 6.67 × 10⁻¹¹ m³/kgs²

M = Mass of black hole = $90\times 1.989\times 10^{30}\ kg$

$R_{f}$ = 10000+100 m

$R_{sb}$ = Distance between the nose and the center of the black hole = 10000 m

The difference in the gravitational field in this system is given by

$\Delta F=\dfrac{GMm}{R_{f}^2}-\dfrac{GMm}{R_{sb}^2}\\\Rightarrow \Delta g=GM\left(\frac{1}{R_f^2}-\frac{1}{R_{sb}^2}\right)\\\Rightarrow g=6.67\times 10^{-11}\times 90\times 1.989\times 10^{30}\left(\frac{1}{(10000+100)^2}-\frac{1}{10000^2}\right)\\\Rightarrow \Delta g=-2352645198509.9604\ m/s^2$

The acceleration is 2352645198509.9604 m/s²

4 0

3 years ago

What if someone refers to a crystal's " habit" what are they referring to?

Alenkinab [10]

It's the external shape of the crystal. You can determine how developed the crystals are and it'll help identify what species of mineral it is. Hope that helped

7 0

3 years ago

Two train 75 km apart approach each other on parallel tracks, each moving at

creativ13 [48]

Answer:

The correct solution is "37.5 km".

Explanation:

Given:

Distance between the trains,

d = 75 km

Speed of each train,

= 15 km/h

The relative speed will be:

= $15 + (-15)$

= $30 \ km/h$

The speed of the bird,

V = 15 km/h

Now,

The time taken to meet will be:

$t=\frac{Distance}{Relative \ speed}$

$=\frac{75}{30}$

$=2.5 \ h$

hence,

The distance travelled by the bird in 2.5 h will be:

⇒ $D = V t$

$=15\times 2.5$

$=37.5 \ km$

6 0

4 years ago

Please answer number 24 and 25 thank you

Tomtit [17]

24) B. Energy enters and exits the system matter does not

25) B. Energy is neither created nor destroyed; it is transformed and transferred.

Explanation:

24)

There are three types of systems in thermodynamics:

- Open system: an open system is a system in which both matter and energy are exchanged with the surroundings. An example of open system is an open bottle with some liquid inside.

- Closed system: a closed system is a system in which matter is exchanged with the surroundings, but energy cannot enter and exit the system. An example of closed system is a closed bottle: in fact, the air and the liquid cannot enter or exit the bottle, but heat can be exchanged through the walls of the bottle.

- Isolated system: an isolated system is a system in which neither matter nor energy can be exchanged with the surroundings. An example of isolated system is a sealed thermal container: in fact, air/liquid cannot leave the bottle, and heat cannot pass through the walls.

Therefore, the statement that best describes the island food web as a closed system is

B. Energy enters and exits the system matter does not

25)

The law of conservation of energy states that for an isolated system, the total energy of the system is constant: therefore, energy cannot be created or destroyed, but only transformed or transferred into different forms.

The Universe is an example of isolated system: as we assume that there is nothing outside the universe, the total energy of the universe must be constant.

An example of application of the law of conservation of energy is for an object in free fall: as the ball falls, if there are no frictional forces/air resistance acting on the ball, the total energy of the ball (given by the sum of its potential energy and its kinetic energy) is constant, and therefore as the ball falls down, there is a conversion of energy from potential energy to kinetic energy.

Therefore, the correct choice is

B. Energy is neither created nor destroyed; it is transformed and transferred.

Learn more about thermodynamics:

brainly.com/question/4759369

brainly.com/question/3063912

brainly.com/question/3564634

#LearnwithBrainly

8 0

3 years ago