how much work does gravity do on the mountain climber if they rappel down the mountain

Answer:

A.) Maritime Tropical (mT)

Explanation:

Continental tropical is the air mass that forms over warm land.

Maritime Polar is the air mass that forms over cold water.

Continental polar is the air mass that forms over cold land.

So therefore A or Maritime Tropical is the correct answer

Answer:

When a fluid flows into a narrower channel, its speed increases. That means its kinetic energy also increases. Where does that change in kinetic energy come from? The increased kinetic energy comes from the net work done on the fluid to push it into the channel and the work done on the fluid by the gravitational force, if the fluid changes vertical position. Recall the work-energy theorem,

There is a pressure difference when the channel narrows. This pressure difference results in a net force on the fluid: recall that pressure times area equals force. The net work done increases the fluid’s kinetic energy. As a result, the pressure will drop in a rapidly-moving fluid, whether or not the fluid is confined to a tube.

There are a number of common examples of pressure dropping in rapidly-moving fluids. Shower curtains have a disagreeable habit of bulging into the shower stall when the shower is on. The high-velocity stream of water and air creates a region of lower pressure inside the shower, and standard atmospheric pressure on the other side. The pressure difference results in a net force inward pushing the curtain in. You may also have noticed that when passing a truck on the highway, your car tends to veer toward it. The reason is the same—the high velocity of the air between the car and the truck creates a region of lower pressure, and the vehicles are pushed together by greater pressure on the outside.  This effect was observed as far back as the mid-1800s, when it was found that trains passing in opposite directions tipped precariously toward one another.

Explanation:

The air flowing over a roof top which has a high velocity as compared to that flowing underneath. This is because of the increase in the kinetic energy of the air.

Kinetic energy is the energy which is due to the motion of an object. It is the energy which is present inside the body of an object which is in motion. Kinetic energy undergoes transformation to potential energy when the object comes at rest. The SI unit of Kinetic energy is Joule (J). Kinetic energy is a vector quantity as it has both the magnitude and direction.

When a fluid or other substances such as air flows into a narrower channel, the speed or velocity of the compound increases. This means that the kinetic energy of the substance also increases. This is because, kinetic energy is directly proportional to the velocity of the object.

Learn more about Kinetic energy here:

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#SPJ2

Answer:

The horizontal speed with which the slingshot hits the balloon is approximately 57.358 m/s

Explanation:

The given parameters of the slingshot motion are;

The initial velocity of the slingshot, v = 100 m/s

The angle (to the horizontal) at which the slingshot is fired makes, θ = 55°

The path of the slingshot which hits the stationary balloon at the top of its flight = Parabolic trajectory

The horizontal component of the velocity = vₓ = v·cos(θ) = Constant

vₓ = 100 × cos(55°) ≈ 57.358

The horizontal speed with which the slingshot hits the balloon = vₓ ≈ 57.358 m/s.

because earth has lava underneath us all and it makes earthquakes and etc things like that

Answer:

42.5mph

Explanation:

The computation of the average speed is shown below:

As we know that

Speed = Distance ÷ Time

ANd, distance = Speed × time

So, the distance would be

= (50 × 5 hours) + (30 × 3)

= 250 + 90

= 340 miles

And, the total time taken is 8 hours

So, the average speed is

= 340 miles ÷ 8 hours

= 42.5mph

Answer:

A or D i put a

Explanation:

Answer:  Its Either Mario or Tonya measured the mass of the rock incorrectly on the pan balance.

Explanation: ...

Answer:

importance of measurement is it gives proper required amount of anything if it will not exist then alot of work be disrupted .In many work measurement is very necessary like in scientific works

Answer:

53.8

Explanation:

Knowns:

Distance - 1,400

Speed - 52

Unknowns:

Velocity - ?

V = 2([tex]\frac{Distance}{Time}[/tex])

V = 2([tex]\frac{1,400}{52}[/tex])

V = 2(26.9)

V = 53.8

Explanation:

A spring has a spring constant, (k), of 3 N/m. It is stretched until it is extended by 50 cm. Calculate the elastic potential energy stored by the spring, assuming it is not stretched beyond the limit of proportionality.

First convert centimetres to metres:

50 cm = 50 ÷ 100 = 0.5 m

Then calculate using the values in the question:

Ee=12 k e2

Ee=12×3×0.52

Ee=1.5×0.25

Ee=0.375 J

Answer:

Answer is the formation of multiple images of the same object .

Explanation:

I hope it's helpful!

Answer:

they relate because one may be metal but they are both metal and they can be strong together if they are connected

Explanation:

they just are

Answer:

See the answer below

Explanation:

The weight of a body is defined as the product of mass by the acceleration gravitation of space or place.

1)

[tex]W=m*g[/tex]

where:

m = mass [kg]

g = gravity acceleration = 9.8 [m/s²]

Therefore:

[tex]m=W/g\\m=62/9.8\\m=6.32[kg][/tex]

2)

The mass remains the same regardless of where the object or body is located. That is, the mass will be equal on Mars and on Earth.

3)

We used the same equation to determine the weight, using the Mars gravity constant.

[tex]W=6.32*3.7\\W=23.4[N][/tex]

Answer:

The height of the hill is "31.85 m".

Explanation:

The given value is:

Velocity,

v = 25 m/s

As we know,

⇒ [tex]Kinetic \ energy =Potential \ energy[/tex]

i.e,

⇒ [tex]mgh=\frac{1}{2} mv^2[/tex]

⇒    [tex]gh=\frac{1}{2} v^2[/tex]

⇒      [tex]h=\frac{v^2}{2g}[/tex]

On substituting the given value, we get

⇒      [tex]h=\frac{(25)^2}{2\times 9.81}[/tex]

⇒         [tex]=\frac{625}{19.62}[/tex]

⇒         [tex]=31.85 \ m[/tex]

Given;

We know the relation,

→ [tex]Kinetic \ energy (K.E) = Potential \ energy (P.E)[/tex]

or,

→ [tex]mgh = \frac{1}{2}mv^2[/tex]

or,

→    [tex]gh = \frac{1}{2}v^2[/tex]

         [tex]h = \frac{v^2}{2g}[/tex]

By putting the values, we get

            [tex]= \frac{(25)^2}{2\times 9.81}[/tex]

            [tex]= \frac{625}{19.62}[/tex]

            [tex]= 31.85 \ m[/tex]

Thus the response above is right.

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Answer:

a) 4

b) 5

c) 2s

d) 10 m/s

e) 5-10m/s^2

want to zøom?

Answer:

The net force is 50 Newton

Explanation:

Mechanical Force

According to Newton's second law, the net force exerted by an external agent on an object of mass m is:

F=m.a

Where a is the acceleration produced on the object.  

We are given the mass of the object m=5 kg and its acceleration [tex]a=10\ m/s^2[/tex].

The net force is:

F = 5 * 10

F = 50 N

The net force is 50 Newton

Answer:

A. The first option: An absorber that is dark in color and rough.

Explanation:

a material absorbs - or transfers the most thermal energy when it is dark in color and rough in texture.

The material that would result in the greatest amount of energy transfer will be an absorber that is dark in color and rough.

A piece of a substance called an absorber is used to absorb a few of the energy of an incoming particle.

Depending on the application, absorbers can be manufactured of a range of materials, including lead, tungsten, and liquid hydrogen.

The majority of absorbers are found in particle detectors, but they are also utilized in particle accelerators to protect their components from radiation damage.

The material that would result in the greatest amount of energy transfer will be an absorber that is dark in color and rough.

Hence option A is correct.

To learn more about the absorber refer to the link;

https://brainly.com/question/23461193

Answer:

I. Speed = 20m/s

II. Velocity = 20m/s due North.

Explanation:

Given the following data;

Distance = 40m

Time = 2secs

To find the speed;

Mathematically, speed is given by the formula;

[tex]Speed = \frac{distance}{time}[/tex]

Substituting into the equation, we have;

[tex]Speed = \frac{40}{2}[/tex]

Speed = 20m/s.

In physics, we use the same formula for calculating speed and velocity. The only difference is that speed is a scalar quantity and as such has magnitude but no direction while velocity is a vector quantity and as such it has both magnitude and direction.

[tex]Velocity = \frac{distance}{time}[/tex]

Therefore, the velocity is 20m/s due North.

Answer:

15s

Explanation:

Given parameters:

Distance traveled  = 375m

Speed = 25m/s

Unknown:

Time taken = ?

Solution:

To solve this problem, we make time the subject of the speed equation.

    Speed  = [tex]\frac{distance}{time}[/tex]  

  Time  = [tex]\frac{distance}{speed}[/tex]  

 Now insert the parameters and solve;

  Time  = [tex]\frac{375}{25}[/tex]   = 15s

Answer:

v₃ = 4.33 [m/s]

Explanation:

This problem can be solved by the conservation of linear momentum, where momentum is preserved before and after the crash or collision.

For this case, the following equation will be constructed. With values before the collision to the left of the equal sign and after the collision to the right of the equal sign.

[tex](m_{1}*v_{1})+(m_{2}*v_{2})=(m_{1}+m_{2})*v_{3}[/tex]

where:

m₁ = mass of the big football player = 130 [kg]

m₂ = mass of the second football player = 110 [kg]

v₁ = velocity of the big football player before the collision = 8 [m/s]

v₂ = velocity of the second football player before the collision = 0 (who is standing still).

v₃ = velocity of the two players after the collision [m/s]

Now replacing:

[tex](130*8)+(110*0)=(130+110)*v_{3}\\1040 = 240*v_{3}\\v_{3}=4.33[m/s][/tex]

Answer:

1800J

Explanation:

Given parameters:

Weight of the book  = 20N

Total distance covered  = 45m + 15m + 30m  = 90m

Unknown:

Total work performed on the books  = ?

Solution:

To solve this problem we must understand that work done is the force applied to move a body through a certain distance.

So;

    Work done  = Force x distance

  Work done  = 20 x 90  = 1800J

Answer:

it's made of land, rocks, water and many more

Explanation:

if you think about it, mountains are just giant rocks. and the ocean is water and land is... well land

Answer:

Well all Ik is that when the earth was formed it was a big hot rock then the water came in and settled it and the animals kinda became land creatures the yea

Explanation:

Answer:

a

Explanation:

wavelength and frequency are inversely related

Explanation:

Mostly in metamorphic or lava materials is uranium-238 contained. Then no fossil could be estimated utilizing U 238 specifically. They should never be used combined due to the huge variations in the half-life of Carbon 14 with Uranium-238. It is only possible to be using carbon 14 to classify fossil from a very current generation.

Answer:

Se necesita la información de las siguientes variables:

(i) Fuerza normal entre los pies y la superficie.

(ii) Masa del atleta de halterofilia.

(iii) Masa de la barra de pesas.

(iv) Aceleración gravitacional.

(v) Fuerza normal entre la barra de pesas y la superficie.

(vi) Aceleración neta del centro de gravedad del sistema.

Explanation:

Sea el conjunto del atleta de halterofilia y la barra de pesas el sistema físico a estudiar. El fenómeno de levantamiento puede modelarse como traslación pura. Por las leyes de Newton tenemos que se necesita las siguientes variables para determinar la magnitud de la fuerza para levantarla (fuerza normal entre la mano y la barra de pesas) se requiere las siguientes variables:

(i) Fuerza normal entre los pies y la superficie.

(ii) Masa del atleta de halterofilia.

(iii) Masa de la barra de pesas.

(iv) Aceleración gravitacional.

(v) Fuerza normal entre la barra de pesas y la superficie.

(vi) Aceleración neta del centro de gravedad del sistema.

Answer:

6 seconds

Explanation:

make me brainliest

Answer:

Somuchcringe answered correctly you mark him brainliest

Explanation:

Answer:

B

Explanation:

Answer: 26.3 m/s²

Explanation:

F = mass x acceleration

674 N = (25.6 kg)(a)

674/25.6 = 26.3

a = 26.3 m/s²