Why do water molecules tend to stay together and hold their shape? Name and explain the phenomenon by which this happens

Answer:

I am pretty sure that it is one

Answer:

Explanation: is 1

Answer:

F = Gm1m2/r^2 where G = 6.67x10^-11, m1 =1300, m2 = 7800, r = 0.23m

F = 6.67x10^-11 *1300*7800/(0.23)^2 = 0.0127852N

Explanation:

Answer:

loloololo

lol

Explanation:

lolloolololo

Answer:

400 m

Explanation:

20m/s x 20s = 400m

Answer:

C) Nuclear fusion

Explanation: You had it correct  

Answer:

Nuclear fusion

Explanation: Answer choice C

Answer:

The Kinetic energy and mass are _directly_ proportional.

Explanation:

We know that Kinetic Energy is basically termed as the capacity of a body to do work.

Kinetic energy is often used to associate with moving objects, therefore, K.E is normally termed as the energy of motion.

The formula of K.E of an object of mass and velocity is defined

K.E = 1/2mv²

From the formula, it is clear that K.E is directly proportional to its mass and also directly proportional to the square of its velocity.

For example,

If A toy plane with a mass of 10 kg is flying at 20 m/s. Its K.E will be:

K.E = 1/2mv²

      = 1/2(10)(20)²

      = 1/2(10)(400)

       = 5(400)

      = 2000 J

Now, let suppose, if we double the mass of a toy plane i.e.

m = 20 kg

so

K.E = 1/2mv²

      = 1/2(20)(20)²

      = 1/2(20)(400)

      = 10(400)

      = 400 J

Therefore, the K.E is doubled when doubled the mass.

Therefore, the Kinetic energy and mass are _directly_ proportional.

Answer:

directly

Explanation:

Answer:

air

Explanation:

Water bodies are already found on the Earth's surface made up of soil which is part of the lithosphere

Answer:

Solution:

i) Heat supplied by heater = Heat gained by water = m * c*theta = 0.12Kg * 4200 * 10 = 5040Joules in 2 minutes.

ii) Power = Energy/time = 5040J/(2 * 60seconds) = 5040J/120seconds = 42Watts.

(iii) Heat supplied to the 70g of water = m * c * theta = 0.07Kg * 4200 * 9K = 2646J

(iv) Heat supplied by heater = Heat gained by 70g of water + Heat supplied to the metal vessel.

But,from our calculations above,

Heat supplied by heater = 5040J ......and

Heat supplied to the 70g of water = 2646J

.: substituting the values,we have that :

5040J = 2646J + Heat supplied to the metal vessel.

5040J - 2646J = Heat supplied to the metal vessel.

.: Heat supplied to the metal vessel = 2394J.

(v) Heat gained by metal vessel = Heat capacity of the vessel * theta.

2394J = Heat capacity of the vessel * 9K

.: Heat capacity of the vessel = 2394/9 = 266(Joule per Kelvin)

(vi) Using the formula:

Heat Capacity = mass * specific heat capacity

.: Specific heat capacity = Heat Capacity/mass = 266/0.55 = 484(Joules per Kilogram per Kelvin)

Explanation:

Answer: C. rapid evaporation of water in the soil :)

A possible result of higher air temperatures caused by global warming is rapid evaporation of water in the soil.

Global warming is a phenomenon that has been registered around the world during the last decades. It refers to a progressive increase in the average temperatures of the oceans and the Earth's atmosphere, which has consequences for flora and fauna, in addition to impacting critical sectors such as agribusiness.

Among the consequences of global warming are melting ice, rising sea levels, desertification, changes in rainfall, floods and reduced biodiversity.

See more about global warming at brainly.com/question/12908180

Answer:

Rough surfaces have more microscopic hills and valleys than smooth surfaces do. So, the rougher the surface is, the greater the friction is.

Answer:

Nuclear energy

Explanation:

The nucleus holds the energy together

Answer:

A

Explanation: The hotter things get the more thermal energy they have

Also don't ever take pictures like this again

Answer:A

Explanation:

1  kg of boiling water is hot enough to melt a block of ice more quickly

Answer:

Displacement = 20 m

Explanation:

Given that,

Kyle runs 20 m north, 20 m west and then 20 m south.

We need to find Kyles's total displacement.

Total distance = shortest path covered by Kyles.

The net displacement of Kyle is 20 m in east direction. Hence, this is the required solution.

Answer:  If the net force on an object is zero, its acceleration will be zero. For example in free fall, the net force on an object equals its weight - the one force pulling on it. If 2 forces push or pull on an object in opposite directions, and the two forces cancel .

Explanation: PLEASE MARK ME AS BRAINLIEST!

We have that the  direction of the net force when one force is pulling down and one force is pushing to the right is given as

[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]

From the question we are told that:

One force is pulling down and one force is pushing to the right

Generally,

When two or more forces are acting in the same direction we have that the Resultant for or net for is a sum of the forces involved

Therefore

When one force is pulling down and one force is pushing to the right the Net force is in a direction that obeys the law

[tex]\theta=tan^{-1}\frac{y-axis\ force}{x-axis\ force}[/tex]

Therefore

[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]

In conclusion

The direction of the net force when one force is pulling down and one force is pushing to the right is given as

[tex]\theta=tan^{-1}(\frac{Down force}{Right force})[/tex]

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Answer:

Vf=27m/s

Explanation:

Vf=Vi+at

Lets substitute the known variables into the equation:

Vf=15+10×1.2

Vf=27m/s

So itll be going 27metres per second

Answer:

Momentum of car = 1200 kg * 10 m/s = 12000 kgm/s Momentum = Force * time 12000 kgm/s = Force * 20s Force = 600 N

Explanation:

Answer:

32.32857

Explanation:

Searched on the web

Answer:

Materials can be classified based on the amount of light they transmit. Materials, which allow complete transmission of light, are called transparent. Any object can be seen through a transparent material. One example of transparent material is pure glass.

Explanation:

Does this help ?

Answer:

light, materials, and shadows

Explanation:

hope this helps have a good rest of your day :) sorry if incorrect

Answer:

Rita runs faster

Explanation:

To obtain the answer to the question given, we determine the speed of Rita. This can be obtained as follow:

Distance = 1.6 km

Time = 15 mins

Speed =?

Next, we shall convert 15 mins to hour. This can be obtained as follow:

60 mins = 1 h

Therefore,

15 mins = 15 mins × 1 h / 60 mins

15 mins = 0.25 h

Thus, 15 mins is equivalent to 0.25 h.

Finally, we shall determine speed of Rita as follow:

Distance = 1.6 km

Time = 0.25 h

Speed =?

Speed = distance / time

Speed = 1.6 / 0.25

Speed = 6.4 Km/h

Thus Rita's speed is 6.4 Km/h

Comparing the speed of Rahul and Rita

Rahul's speed = 4.5 km/h

Rita's speed = 6.4 Km/h

We can see that Rita's speed is greater than Rahul's speed. This simply indicates that Rita runs faster than Rahul.

Answer:

What is the acceleration of an object moving at a constant speed?

The Meaning of Constant Acceleration

The data table above show an object changing its velocity by 10 m/s in each consecutive second. This is referred to as a constant acceleration since the velocity is changing by a constant amount each second.

Answer:

there is no acceleration for an object moving with constant speed

Explanation:

it is because acceleration is change in velocity and constant means same or without any change so there is no acceleration for an object which is moving with same speed

hope it helps:)

Answer:

It's Laws of Motion

Explanation:

Answer:

a.

Explanation:

Answer:

The girl must sit 5 m on the other side of the seesaw.

Explanation:

Given;

mass of the boy, = 75 kg

mass of the girl, = 50 kg

distance of the boy from the pivot, = 2 m

let the distance of the girl from the pivot = d

    <-------------2m-------------><-------------d-------------->

-----------------------------------------------------------------------------------

     ↓                                  Δ                                   ↓

     75                                                                      50

Apply the principle of moment, about the pivot;

clockwise moment = anticlockwise moment

75 x 2 = 50 x d

150 = 50d

d = 150 / 50

d = 3 m

The distance of the girl from the pivot is 3 m.

Therefore, the girl must sit ( 2m + 3m ) on the other side of the seesaw.

Answer:

40mph

Explanation:

20miles  .5 miles away if you go 20 mph you get there in a hour soo if you double to 40 mpg you get there in 0.5

Answer:

40 mph

Explanation:

you went 20 miles in half a hour, multiply twenty by 2 and you get 40

Answer:

203.1J

Explanation:

Given parameters:

Mass  = 65kg

Speed  = 2.5m/s

Unknown:

Kinetic energy of jogger  = ?

Solution:

To solve this problem, we use the kinetic energy equation:

    K.E  = [tex]\frac{1}{2}[/tex] m v²  

m is the mass

v is the velocity

 Now insert  the parameters and solve;

  K.E  =  [tex]\frac{1}{2}[/tex] x 65 x 2.5²   = 203.1J

Answer:

in the ball

Explanation:

potential energy is where an object has energy, always, but it isn't always moving, and when you drop the ball, it has kinetic energy.

c. Developing new technologies designed to see farther into space

than before

The universe is everything including all of space, and all the matter and energy that space contains. Also it includes time itself and, of course, it includes us.

What began as a sequence one-upmanship in space-related technological advancements between the U.S. and the Soviet Union would spawn incredible progress observed in innovation to this day. The battle for dominance not only as a global superpower, but a space power, led the United States and the Soviet Union to race to put men in space and eventually on the moon.

The launch of the Soviet satellite Sputnik on Oct. 4, 1957, would place pressure on the U.S. to design technologies crafted for space exploration. This, in turn, spurred a series of innovations in technology that would have far reaching impacts beyond space.

These technologies can be seen as developments in modern healthcare, construction, and transportation. Relevant examples include medical imaging techniques,  artificial limbs, water filtration systems, solar panels, firefighting equipment, shock absorbers, air purifiers, home insulation, weather resistant airplanes, infrared thermometers, and countless other vital inventions.

While all these creations help sustain essential aspects of modern life, we carry one of the largest technological advancements from the space race in our pockets today.

Therefore, Developing new technologies designed to see farther into space than before lead scientists to develop new explanations about the universe.

Learn more about universe here:https://brainly.com/question/15844073

#SPJ1

Answer:

0.641 seconds

Explanation:

Distance (d) = 1.0 km

Using the relation :

Speed = distance / time

Time = distance / speed

Speed of sound in seawater is about 1560 m/s

Distance = 1.0km =

1km = 1000m

Time = 1000 / 1560

Time = 0.6410256

Time = 0.641 s

Answer:

probably when the next pandemic happens