<span>To calculate the density, we must first calculate the volume of the object. For a rectangle, the volume is equal to V=l*w*h. In this case, V=22*13.5*12.5=3712.5 mm^3. Next we have to convert the mm^3 to mL using the conversion factor of 1 mm^3=.001 mL. To get mL, we set up the expression 3712.5 mm^3 * (.001mL/1mm^3) = 3.7125 mL. Finally, to get the density, we know density is mass over volume, so we set the expression p=m/V=2.5g/3.7125mL=.6734 which rounded to 3 significant figures is .673. The answer will be .673</span>
The answer would be B. Freezing water breaks apart a rock
Answer: Explain the terms “criteria” and “constraints.” Criteria are things the design needs to do in order to be successful--its requirements. Constraints are limitations on the design. These may be materials available, the cost of the materials, the amount of time they have to develop the solution, etc.
Explanation:
Answer:
c. Both hit the ground with the same speed.
Explanation:
Given that speed of the both balls are same.
We know that kinetic energy given as
v=Speed , m= mass
If mass of the the balls are same then their kinetic energy will be same.
The potential energy PE
PE= m g h
h =height
Given that h is same ,therefore their potential energy will be same.
But the time taken by both the balls will be different.
Therefore answer is c.
<span>The density of air is about 1.29 kg/m^3, of helium .169 kg/m^3, and of carbon dioxide 1.98 kg/m^3. So the pitch would be highest for helium, in the middle for air, and lowest for CO2.</span>