Answer:
Theory
Explanation:
Theory is a term that is used often in academic work or scientific research to explain certain things or conditions established on universal principles or laws.
It is used to describe the "why and how" or the reason behind the occurrence of a situation.
Hence, it is correct to conclude that THEORY is "an explanation of the relationships among particular phenomena."
Answer:
A) 15.0 years
Explanation:
Due to the distance to the star system is in light-year units, we can compute the time by using:
then, Rob will take to complete the trip about 15 light-years.
hope this helps!!
Answer:
D.
Explanation:
8.1X10 to the power of 6 Joules.
Answer:
1.2 m/s
Explanation:
The puck in this problem is moving with uniform circular motion, so the net force acting on it (the tension in the string) must be equal to the centripetal force.
So we can write:
where:
T is the tension in the string
m is the mass of the puck
v is its tangential speed
r is the radius of the circular path
For the puck in this problem, we have:
m = 0.5 kg
T = 1.0 N
r = 0.7 m
Substituting and solving for v, we find the tangential speed: