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2 years ago

How might liquid water exist on mars where the temperature is routinely below the freezing point of water?

Physics

1 answer:

Alla [95]2 years ago

4 0

Martian water may contain salts, which lowers the freezing temperatures of the water

How is Mars atmosphere?

The atmosphere of Mars is much thinner than Earth’s. The Red Planet's atmosphere contains more than 95% carbon dioxide and much less than 1% oxygen. People would not be able to breathe the air on Mars.

It is possible that liquid water could also exist on the surface of Mars through the formation of brines suggested by the abundance of hydrated salts. Brines are significant on Mars because they can stabilize liquid water at lower temperatures than pure water on its own.

Thus, in the extreme and uneventful conditions of saturation by mixtures of salts, liquid water can be stable on Mars between 180 K and at least up to 298 K.

learn more about Mars from here: brainly.com/question/28197278

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You might be interested in

Which statement best describes the motion of an object that is being subjected to two forces of equal magnitude in opposite dire

Ludmilka [50]

The net force on the object is zero, so it has no acceleration. It moves in a straight line and at a constant speed (which may be zero).

8 0

4 years ago

Jose is batting for the home team when he hits a foul ball that rises straight up over home plate. A fan in the stands notices t

andreyandreev [35.5K]

Answer:

Explanation:

Given maximum height reached by the ball as H = 40 metres

Since the ball rises straight up when hit by a ball, then the angle of launch will be perpendicular to the ground and that is 90°.

To determine the upward speed of the ball in meters per second after it got struck by the bat, we will use the formula for calculating the maximum height according to projectile motion;

Maximum Height H = $\frac{u^2sin^2\theta}{2g}$ where;

u is the speed of the ball

$\theta$ is the angle of launch

g is the acceleration due to gravity = 9.81m/s²

Substituting the given parameters into the formula;

$40 = \frac{u^2sin^2(90)}{2(9.81)}\\ \\40 = \frac{u^2}{2(9.81)}\\ \\40 = \frac{u^2}{19.62} \\cross\ multiply\\\\u^2 = 40*19.62\\u^2 = 784.8\\u = \sqrt{784.8}\\ u = 28.01 m/s$

Hence the upward speed of the ball in meters per second after it got struck by the bat is 28.01m/s.

5 0

3 years ago

TRUE if the statement is correct and write FALSE if is not.

Ket [755]

Answer:

1. True

2. True

3. True

4. True

5. False

Explanation:

1. Indeed, many health experts often recommend that when children reach the age of adolescents (between ages 10 and 19) they should eat a variety of foods daily in other to have enough energy and nutrients needed for development.

2. Having regular meals (mornings, afternoon, and evenings) has for long been encouraged by medical professionals in other to provide the body its fuel.

3. Some skin problems have long been associated with too much consumption of sweets and desserts since these products often contain sugars, and excess processed sugar intake is said to increase acne and eczema.

4. Just as the name suggests, the food pyramid is a visual representation that contains how many servings from each food group in other be healthy.

5. This is false because throughout the growth stages of life it is essential to get the needed food nutrients such as calcium, iron, protein, and energy foods.

4 0

3 years ago

consider the free-body diagram. if you want the box to move, the force applied while dragging must be greater than the

NeTakaya

Answer:

Force of static friction between the two surfaces

Explanation:

When two surfaces come into contact, they exert a force that resist the sliding of the two surfaces. This force is called static friction.

This force is given by the relation

$F_{s}=\mu_{s}\eta$

Where,

μ - coefficient of static friction

η - normal force acting on the body

When a force acts on a body placed on a rough surface, it doesn't do any work if the applied force was less than the force of static friction.

So, in order to move the body, the applied force should be greater than the force of static friction.

6 0

3 years ago

If an airplane travels a distance of 540 km in 2.5 hours, what is its average speed in m/s?

VashaNatasha [74]

Answer:

Great question! To solve this problem you just need a bit of simple math. The short answer is 60 m/s

Explanation:

To solve this, you must first set up your equation.

540km/2.5hr * 1000m/3600s

You would set it up this way because there are 1000 meters in a km and 3600 seconds in an hour. This

540000m/9000s

This simplifies down to

60m/s

6 0

3 years ago