All categories

3 years ago

Can someone please answer this, ill give you brainliest Would be very appreciated.

Physics

2 answers:

dimaraw [331]3 years ago

7 0

Answer:

True

Explanation:

Water is present in each of the four major Earth systems (hydrosphere, atmosphere, geosphere, and biosphere) and readily moves from one to another. For example, water in the hydrosphere can evaporate to become part of the atmosphere.

Please give brainliest !! :)

3241004551 [841]3 years ago

6 0

Answer:

True

Explanation:

The spheres of the Earth are : Biosphere, Hydrosphere, Geosphere, and Atmosphere
Water travels through liquid form only (known as water itself) through 3 spheres
It travels through the atmosphere in gas form (vapor) or liquid form itself as rain

You might be interested in

How much will the top five winners of nasa’s design contest win?

sashaice [31]

Answer:

$\$100,000$

Explanation:

The top 5 winners of NASA's design contest winner received amount of $\$100,000$ (Dollar One hundred thousand). The respected amount was divided into 5 parts as there were 5 winners as well.

So, the amount was divided among the winners are as follows:

Winner 1 ⇒ $\$20,957.95$

Winner 2 ⇒ $\$20,957.24$

Winner 3 ⇒ $\$20,622.74$

Winner 4 ⇒ $\$19,580.97$

Winner 5 ⇒ $\$17,881.10$

Hence by adding all of the 5, we will get the answer, which is $\$100,000$ .

4 0

3 years ago

What type of contraction requires the greatest amount of tension?

mars1129 [50]

Answer:

Isotonic eccentric

Explanation:

First of all, it should be noted that the term contraction has the meaning of joining or shortening. In the field of bodybuilding and workouts with loads, we can define muscle contraction as what happens whenever muscle fibers generate a tension in themselves.

This tension situation occurs in several situations, including when the muscle is shortened, elongated, moving, maintaining the same length or static.

There are different types of muscle contraction, among them we can highlight isotonic contraction, which is divided in turn into concentric and eccentric, isometric, auxotonic and isokinetic contraction.

Isotonic contraction is the most common type of contraction that occurs in most sports or physical activities that we perform in our day to day. Normally the muscular tensions that we exert are usually accompanied by a shortening and lengthening of the muscle fibers of a muscle. In turn, the isotonic contraction is divided into two, concentric and eccentric.

Concentric concentration: is that which happens when a muscle makes a tension capable of overcoming a resistance, producing a shortening and subsequent mobilization of a part of the body overcoming said resistance. For example, when we take a spoon and take it to our mouths to eat, a concentric shortening occurs. Putting examples in the gym on the bench press the movement of raising the bar, is equivalent to the concentric phase.

Eccentric concentration: we can say that it is one in which, given a resistance, we exert a greater tension with the muscle, so that said muscle is lengthened. In the case of the bench press, the eccentric phase is when we lower the bar to the chest.

8 0

3 years ago

A car’s velocity as a function of time is given by Vx (t) = α.t + β.t 2 , where α= 3m/s and β= 0.1m/s 3 . Calculate the average

s344n2d4d5 [400]

The definition of average acceleration allows to find the result for the average acceleration in the given time interval is:

$a_{average}= 1.5 \ \frac{m}{s^2}$

Instantaneous acceleration is defined as the derivative of velocity with respect to time.

a = $\frac{dv}{dt}$

Where a is the acceleration, v the velocity and t the time.

They indicate that the speed of the car is given by the relation.

v = α t + β t²

With α = 3 m / s and β = 0.1 m / s³

Let's make the derivative.

a = α + 2β t

Let's substitute

a = 3 + 2 0.1 t

Average acceleration is the change in velocity in the time interval.

$a_{average} = \frac{\Delta v}{\Delta t }$

Let's find the velocity at the indicated time.

For t = 5 s

v₅ = 3 + 0.1 5²

v₅ = 5.5 m / s

For t = 10 s

v₁₀ = 3 + 0.1 10²

v₁₀ = 13 m / s

Let's calculate the average acceleration.

$a_{average} = \frac{13 - 5.5 }{ 10 - 5 }\\$

$a_{average}= 1.5 \ m/s^2$

In conclusion using the definition of mean acceleration we can find the result for the mean acceleration in the given time interval is:

$a_{average} =$ 1.5 m / s²

Learn more here: brainly.com/question/20057878

7 0

3 years ago

I just need an answer ASAP

nikdorinn [45]

Answer: c

Explanation: hope this helps :)

8 0

3 years ago

Read 2 more answers

The angle of elevation to the top of a very tall Building is found to be 6° from the ground at a distance of 1 mi from the base

DanielleElmas [232]

Answer:

555

Explanation:

The scenario is shown in the image attached below. A Right Angled Triangle is formed. We have an angle of 6 degrees, the side adjacent to angle which measures 1 mile and we need to find the side opposite to the angle.

Since 1 mile = 5280 feet, the side adjacent to the angle has a measure of 5280 feet.

Tangent ratio relates the opposite and adjacent side by following formula:

$tan(\theta)=\frac{Opposite}{Adjacent}$

Using the given values, we get:

$tan(6)=\frac{x}{5280}\\\\ x=tan(6) \times 5280\\\\ x = 555$

Thus, rounded to nearest foot, the height of the building is 555 feet

5 0

4 years ago