Answer:
D) the two spheres remain of equal size.
Explanation:
- Since the body of the sphere is made up of both the same material. Thus the orientation will not affect the expansion. That is solid upon solid and hollow upon the hollow sphere. Hence it can be said that both the sphere expands and is due to the material used for making both of them is the same.
216.309 mph is the top speed record right now
<u>Answers</u>
Part 1: At the third hour
Part 2: At the second hour
<u>Explanation</u>
The acceleration is considered positive when the change in velocity is increasing. At the second hour, the velocity was 60 mph. At the third hour the velocity was 80 mph.
∴ acceleration = (80 - 60)/(3 -2)
= 20/1
= 20 mph² (positive)
The acceleration is negative when the velocity is decreasing.
At the first hour velocity was 70 mph. At the second hour the velocity was 60 mph.
∴ acceleration = (60 - 70)/(2 - 1)
= -10/1
= -10 mph² (Negative)
Answer:
v = 4t - t²/3
Explanation:
4 - k*6 = 0
k = 4/6 = 2/3
dv/dt = 4- 2/3 t
integral of dv = integral of (4-2/3 t) dt
v = 4t - t²/3
Answer:
Not , the vibrations move , not the water
