Answer:
D.<u>-1500Joules</u>
Explanation:
The change in kinetic energy of the object s equivalent to the workdone by the body in the west direction (negative x direction)
Workdone = Force * Distance
Given
Force = 30N
Distance moved by the object = 30m
Required
Kinetic energy
Kinetic energy = 30 * 50
Kinetic energy = 1500Joules
Since the body moves in the negative direction, hence the kinetic energy will be <u>-1500Joules</u>
The difference between the two is, well for one
Spectrum: The entire range that the "<em>waves" </em>could be such, as visible light, x-ray's and so on.
Waves: These are different because they aren't telling you or showing the entire spectrum just which they length that they are.
<em>It may confuse you but it makes sense to me (Sorry)</em>
Answer:
31.3 m/s
Explanation:
Centripetal acceleration = v² / r where r is the length of the arm of the chair
98 m/s² = v² / r
v² = √(98 m/s² × 10) = 31.3 m/s