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bonufazy [111]
3 years ago
7

If 100ml of cold water is added to 100ml of hot water what happens

Physics
1 answer:
denis23 [38]3 years ago
4 0
The water will be cool and steam will be created by the hot and cold water reacting together
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5. According to the law of reflection, the
Fantom [35]

Answer:

the answer is ....angle of reflection

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3 years ago
Estimate the acceleration you subject yourself to if you walk into a brick wall at normal walking speed. (Make a reasonable esti
xenn [34]

Answer:

From certain assumptions that the walking speed is 2 m/s, and the stop time is 0.1 s the acceleration would be -20 m/s

Explanation:

Using the average acceleration formula:

a=\frac{\Delta v}{\Delta t} where \Delta v and \Delta t are the changes in the speed and time respectively.

We have by assuming that the walking speed is 2 m/s and the stop time is 0.1s which is equal to the change in time during the stopping.

\Delta v=v_f-v_i=0-2 m/s=-2 m/s, where v_i,v_f are the initial speed and final speed respectively, and \Delta t=0.1 s

Plugging the previous in the average acceleration formula we get

a=\frac{-2}{0.1}=-20\, m/s where the minus sign indicates an acceleration in the opposite direction of the motion (or in other word opposite to the speed's direction).

4 0
3 years ago
Jada was roller skating at 8 m/s with a total mass of 30 kg. Korbin gently pushed her and she increased her speed to 11 m/s. Fin
yan [13]

Answer:

she added more force, she went down a hill with more friction.

Explanation:

either one of them

5 0
3 years ago
How was the earliest version of the periodic table organized before Mendeleev?
astraxan [27]
This is how the periodic table is organized.

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3 years ago
A sled slides down a hill with friction between the sled and hill but negligible alr resistance. Which of the following must be
Andreyy89

Answer:

A) The sum of the kinetic energy and the gravitational potential energy changes by an amount equal to the energy dissipated by friction,

Explanation:

  • The kinetic energy is the energy that the object has and is defied by the work that is needed to accelerate the body.
  • The gravitational potential is a mechanism by which an equal amount of energy is being transferred per unit mass that is needed for the object to move from the specific location.
  • Hence when the sled moves down the hill with the force of gravity it has negligible resistance as an equal amount of energy is dissipated.
8 0
2 years ago
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