Answer:
The average speed must be 30mph so this means the car traveled for 2hrs 60/30
Answer:
Logs in a fire is an example of something burning, also changing its state of form. I think thats chemical change; going from wood to ashes. And charged batteries means they haven't been used yet or they were just charged, resulting in physical change.
Explanation:
I just learned this in science.
I hope this helps!
Answer:
Explanation:
We are given the mass, specific heat, and temperature, so we must use this formula for heat energy.
The mass is 5 grams, the specific heat capacity is 0.14 Joules per gram degree Celsius. Let's find the change in temperature.
- ΔT= final temperature - initial temperature
- ΔT= 95°C - 15°C = 80°C
We know the variables and can substitute them into the formula.
Multiply the first numbers. The grams will cancel.
Multiply again. This time the degrees Celsius cancel.
56 Joules of heat are needed.
<span>When electrons shared unequal atoms such as hydrogen
and oxygen atom, one atom will get more of the common electrons and it will be slightly
negatively charged. The other atoms who gets less electron will be slightly
positively charged. This chemical condition describes water as a polar
molecule. The oxygen atom pulls the shared electrons more strongly than do the
hydrogen atoms within each of the two polar covalent bonds.</span>
