Answer:
Explanation:
Given
Distance to grandmother's house=100 mi
it is given that during return trip Julie spend equal time driving with speed 30 mph and 70 mph
Let Julie travel x mi with 30 mph and 100-x with 70 mph
x=30 mi
Therefore
Julie's Average speed on the way to Grandmother's house
=42 mph
On return trip
The answer is C.energy because it can make light and heat
<span>Notice for the Carbon question they were the same element and the shared the same number of protons. so i think d. is the answer</span>
A simple rule to bear in mind is that all objects (regardless of their mass) experience the same acceleration when in a state of free fall. When the only force is gravity, the acceleration is the same value for all objects. On Earth, this acceleration value is 9.8 m/s/s.
A
More concentrated means more collisions per unit volume, and as the volume stays the same and only concentration changes, the there are more collisions
