Answer:
5 watts
power = work done ÷ time taken
10 j ÷ 2 = 5w
New force is 1/4 of force when distance is doubled
When we arrived on the planet .We were nothing but slowly by slowly we we started developing ourselves. Now we all can see that how science has made changes in our daily life .We have steped on the moon .We have discovered many things .For ex.Universe is about 1 million km but we have reached just about 1 cm
The answer is 3. Observation
Explanation:
The sentence "The popcorn kernels popped twice as fast as the last batch" is the result of observing or measuring the time popcorn kernels require to pop. In this context, the sentence best matches the word "observation" which the term used in the Scientific method to refer to statements that are the result of studying a phenomenon, either through the senses such as sight or through precise instruments that allow scientists to understand numerically variables such as time, speed, temperature, etc.