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8090 [49]
3 years ago
15

As the block slides down the ramp, what type of energy conversion is occurring?

Chemistry
1 answer:
Licemer1 [7]3 years ago
5 0
As a block slides down a ramp the potential energy is transformed into kinetic energy.

If there is not friction between the ramp and the block that is the only conversion occurring.

If there is friction some potential energy will be converted into thermal energy (heat) and sound.

Also, if there is any kind of interaction between the block and other object some other kind of energies can be otained.

That is all what can be said without a figure that shows other specific condition that implies another conversion of energy.


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How many grams of water at 50◦c must be added to 16 grams of ice at −12◦c to result in only liquid water at 0◦c?
melisa1 [442]

When water at 50 C is added to ice at -12 C, heat is transferred from hot water to ice.

- Heat given out by water = Heat absorbed by ice

Calculating the heat released by hot water:

q = m CwaterΔTq = m (4.184\frac{J}{(g.^{0}C)} )(0^{0}C-50^{0}C)

Calculating heat absorbed by 16 g of ice: Ice at -12^{0}C is converted to ice at O^{0}C and then ice at O^{0} C to water at 0^{0}C

q = m CiceΔT + m (Heat of fusion)

q = 16 g(2.11\frac{J}{g.^{0}C})(0^{0}C - (-12^{0}C)) + 16 g (333.55\frac{J}{g})

q = 405.12 J +5336.8 J =5741.92 J

- Heat given out by water = Heat absorbed by ice

-(m(4.184\frac{J}{g.^{0}C})(0^{0}C-50^{0}C) = 5741.92 J

m = 27.4 g

Therefore, 27.4 g water at 50^{0}C must be added to 16 g of ice at -12^{0}C to convert to liquid water at 0^{0}C

4 0
3 years ago
True or false An organism needs two dominant alleles to express that trait.
vova2212 [387]
No one can do that by him or her self

8 0
3 years ago
Describe the difference between an independent and dependent valuable?
kolbaska11 [484]

Answer:

A dependent valuable is a valuable whose variation depend on another variable usually the independent variable. An independent variable is a variable whose variation do not depend on another variable but the reseacher experimenting.

7 0
3 years ago
Which of the following would not be considered matter?<br><br> plants<br> cheese<br> light<br> blood
belka [17]

Answer:

Light

Explanation:

Plant is a thing so it has matter

Cheese is food so it has matter

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3 years ago
In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. Which postulate of ki
Levart [38]

Answer:

Collisions between gas particles are elastic; there is no net gain or loss of kinetic energy.

Explanation:

When a gas is paced in a container, the molecules of the gas have little or no intermolecular interaction between them. There is a lot of space between the molecules of the gas.

The gas molecules move at very high speed and collide with each other and with the walls of container.

The collision of these particles with each other is perfectly elastic hence the kinetic energy of the colliding gas particles do not change.

7 0
3 years ago
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