<span>Assuming the car is travelling in the same direction for the entire hour, the acceleration is zero.</span>
Answer:
1. the ignition provides the energy to break the bonds in molecules and start the reaction
2. some of the energy is lost as heat
3. the chemical energy of the reactants is greater than the chemical energy of the products. energy is released to the surroundings.
4. equal to
5. earths magnetic field deflects most of this radiation
6. energy is the same at each step
Explanation:
just took the test; these are all correct!
The answer would be a Light year.
The answer is <span>Redi experimented with rotting meat; Pasteur experimented with broth.</span>
Answer:
70 km/h
Explanation:
Let the velocity of car A is v km/h, thus the velocity of car B is (v - 20) km/h.
They meet after 3 hours.
Distance traveled by car A in 3 hours = v x 3 = 3 v
Distance traveled by car B in 3 hours = (v - 20) x 3 = 3v - 60
Total distance traveled is 480 km
So, 3 v + 3 v - 60 = 480
6 v - 60 = 480
6 v = 540
v = 90 km/h
Thus, the speed of car A is 90 km/h and the speed of car B is 90 - 20 = 70 km/h.
