the cut pieces will have their own north and south pole
Answer:
3.01 L
Explanation:
V
1
: 2.75L
T
1
:
18
∘
C
V
2
: ?
T
2
:
45
∘
C
If you know your gas laws, you have to utilize a certain gas law called Charles' Law:
V
1
T
1
=
V
2
T
2
V
1
is the initial volume,
T
1
is initial temperature,
V
2
is final volume,
T
2
is final temperature.
Remember to convert Celsius values to Kelvin whenever you are dealing with gas problems. This can be done by adding 273 to whatever value in Celsius you have.
Normally in these types of problems (gas law problems), you are given all the variables but one to solve. In this case, the full setup would look like this:
2.75
291
=
V
2
318
By cross multiplying, we have...
291
V
2
= 874.5
Dividing both sides by 291 to isolate
V
2
, we get...
V
2
= 3.005...
In my school, we learnt that we use the Kelvin value in temperature to count significant figures, so in this case, the answer should have 3 sigfigs.
Therefore,
V
2
= 3.01 L
Answer:
P = 8000 Kg m/s
When speed is increased to 50 m/s,
P = 40,000 kg. m/s
Explanation:
Given data:
Mass = 800 Kg
Velocity = 10 m/s
Momentum = ?
Speed increased = 50 m/s
Momentum = ?
Solution:
Formula:
P = mv
P = 800 kg× 10 m/s
P = 8000 Kg m/s
When speed is increased to 50 m/s.
P = mv
P = 800 kg× 50 m/s
P = 40,000 kg. m/s
D is the correct answer
every other option contains an element
