1. What is Physical Science? 2. What is the definition of Hypothesis?
3. Which does a scientist believe more, a
theory, or a law?
4. Is Science guess-work? Did I mention the
word "guess"?
5. Which is hardest to change: Hypothesis,
Theory, or Law?

explanation: in any substance/object, the particles inside it (atoms/molecules) constantly move in random directions and with random speeds (this motion is called brownian motion). as a result, the particles have some kinetic energy (which is proportional to the temperature of the substance).

explanation:

have a great day!

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.

80cm/s.

24cm/s.

53.3cm/s.