Answer: D - Local winds blow over short distances, whereas global winds blow over long distance
Answer:
t = 0.55 s
Explanation:
Given that,
Height of the marble, h = 1.5 m
We need to find the time for which the marble is in air. Let the time is t. Using second equation of motion to find it as follows :

Here, u = 0 and a = g

So, the marble is in air for 0.55 s. Hence, the correct option is (c).
Answer: Experimental design means creating a set of procedures to test a hypothesis. A good experimental design requires a strong understanding of the system you are studying. By first considering the variables and how they are related (Step 1), you can make predictions that are specific and testable (Step 2).
Explanation:
Answer:
D. 200 kgm/s
Explanation:
Momentum is conserved.
Initial momentum = final momentum
(50 kg) (4 m/s) + (30 kg) (0 m/s) = final momentum
200 kgm/s = final momentum
When an exothermic reaction releases thermal energy, this energy is usually...
C. Harnessed to do work
(Not 100% on that)