All categories

3 years ago

How do evaporation and boiling differ ?

1 answer:

8 0

Evaporation occurs when atoms/molecules leave the surface of the liquid.

Boiling occurs when this evaporation take a place in a body of the liquid.

You might be interested in

A 250 kg engine block is being dragged across the pavement by a sturdy chain with a tension force of 10,000 N, as seen in the fr

Musya8 [376]

Answer: B

Explanation:

The friction force is less than the tension force

4 0

3 years ago

If an object absorbs all colors but red, we see

julia-pushkina [17]

[I researched for you, since I am not in that particular level to know that knowledge yet. I assure this is accurate info :)]

The answer is A, red.
"Remember, the color you see is light REFLECTING off the surface of that object. If all colors are absorbed in to the surface EXCEPT red, red must be reflected, and you'll see red." - Yahoo User @Chap

8 0

3 years ago

The uncertainty in the position of an electron along an x axis is given as 53 pm, which is about equal to the radius of a hydrog

Jobisdone [24]

To solve this problem it is necessary to apply the concepts related to the Heisenberg's uncertainty principle. Under this principle we understand the relationship that the minimum range of error in position (x) times the minimum range of error in momentum (p) is, at a minimum, about equal to the Planck constant, mathematically that is,

$\Delta p = \frac{h}{\Delta x}$

Replacing with our values we have,

$\Delta p = \frac{6.63*10^{-34}J\cdot s}{2\pi (53*10^{-12}m)}$

$\Delta p = 1.99*10^{-24} kg\cdot m/s$

Therefore the least uncertainty in any simultaneous measurement of the momentum component px of this electron is $1.99*10^{-24} kg\cdot m/s$

4 0

3 years ago

A bike is traveling to the left with the speed of 27 m/s when the rider slams on the brakes. The bike skids for 41.5 m with the

Darina [25.2K]

The acceleration of the bike is equal to $8.78\frac{m}{s^{2}}$ opposing the movement (to the right).

Why?

Since after the rider slams the brakes, the bike came to a stop, we know that the acceleration is opposite to the velocity/movement.

We can use the following equation to calculate the acceleration:

$v_{f}^{2}=v_{o}^{2}+2*a*d$

So, substituting, we have: (let's consider negative to the left and positive to the right)

$0=(-27\frac{m}{s} )^{2}+2*a*41.5m\\\\0=729\frac{m^{2} }{s^{2} }+83*a\\\\a=\frac{-729\frac{m^{2}}{s^{2}}}{83m}=-8.78\frac{m}{s^{2}}$

The negative sign means that the acceleration's direction is opposite to the movement.

Hence, we have that the acceleration is equal to $8.78\frac{m}{s^{2}}$ opposing the movement (to the right).

Have a nice day!

5 0

4 years ago

Read 2 more answers

What happens to the pressure in a sealed container if the amount of a gas in the container

adoni [48]

I believe the pressure would increase because there would be less room for the gas to move, making it more difficult and resulting in added pressure

4 0

4 years ago

Read 2 more answers