Answer:
-90.8 Joules
Explanation:
A = Area of container = 50 cm²
d = Length pushed = 15 cm
P = External Pressure = 121 kPa
Change in volume
Work done
Work done by the system is -90.8 Joules
A discovery not the others
Answer:
Time taken for the car to travel a distance of 4.50 m = 1.40 seconds
Explanation:
velocity of toy car = 3.21 m/s
distance travelled by toy car = 4.50 m
Time = ?
Therefore, the time taken for the car to travel a distance of 4.50 m = 1.40 seconds
The answer is vaporization, then condensation.
Here is a set of flash card that can help with this subject.
<span>Density is a value for
mass, such as kg, divided by a value for volume, such as m3. Density is a
physical property of a substance that represents the mass of that substance per
unit volume. We do as follows:
</span><span>A. 1L
100 g /1L = 100 g/L
B. 0.10 L.
100g/0.10L = 1000 g/L ------> MOST DENSE SUBSTANCE
C. 100 L
</span>100g/100L = 1 g / L <span>
D. 10 L
</span>100g/10L = 10 g/L