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Bingel [31]
3 years ago
13

Which of the following situations would cause the greatest decrease in the motion of molecules in a system?

Physics
2 answers:
Alina [70]3 years ago
7 0

A. is the right answer since work is negative and Q which is heat in negative also

Blizzard [7]3 years ago
3 0

Answer: Option A

Explanation: Now, i will consider that W and A refers to the work and heat done/applied to the system  

Always Q is related to the heat, so if Q is positive this means that the temperature of the system increase if Q is negative this means that heat is extracted from the system, and the temperature decreases, which implies that the motion of the particles decreases.

For the work is the same, if the applied work is positive, then the energy of the system increments (suppose a gas inside a piston, if you compress the piston the work is positive, and now the particles are close together, wich increments the temperature of the gas)

If the work is negative, this means that the system does the work, so the energy decreases, and also the motion of the particles, so the correct option A

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Ber [7]

Answer:

Vf=3

Explanation:

you must first write your data

data before impact

M1=1000 M2=5000

V1=0 m/s V2 =0m/s

data after impact

M1=1000 M2=5000

V1=15m/s V2=?

M1V1 +M2V2=M1V1 +M2V2f

(1000)(0)+(5000)(0)=(1000)(15)+(5000)Vf

0=15000+5000Vf

- 15000÷5000=5000Vf÷5000

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6 0
2 years ago
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kicyunya [14]
By definition, Ampere is a unit of current which is a measure of the amount of charge passing through a point in a circuit per unit  of time, with an equivalent charge of 1.602 x 10^(-19) Coulomb per electron. To determine the number of electrons passing through the heater, we use the definition of the current. We calculate as follows:

13.5 A = 13.5 C per second
Charge = 13.5 C/s (10 min) ( 60 s / 1 min)
Charge = 8100 C 

Number of electrons = 8100 C / 1.602 x 10^(-19) C per electron
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Therefore, there are 5.1 x10^22 electrons that assed through the heater for 10 minutes.
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3 years ago
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Centripetal acceleration = 2.7m/s^2

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Marrrta [24]

Answer:

d

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