Answer:
Wavelength = 250 m
Explanation:
[ Refer to the attached file ]
Answer:
Kinetic energy is greatest at the lowest point of a roller coaster and least at the highest point.
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Answer:
7.5 kg
Explanation:
We are given that

Length of plank, l=3 m
Distance of fulcrum from one end of the plank=1 m

We have to find the mass must be on the other end if the plank remains balanced.
Let m be the mass must be on the other end if the plank remains balanced.
In balance condition






Hence, mass 7.5 kg must be on the other end if the plank remains balanced.
Answer:
v = 44,16 m/s
Explanation:
We will fixate our reference in the starting point from where Dan jumped of, at the top of the Casino. Therefore, the displacement made when dan reached the airbag would be of y= -99,4 m viewed from our reference. We describe the motion of dan with the equation:

Dan jumped from the rest, that means that the initial velocity v_0=0, therefore:

Since Dan is moving in the negative axis regarding our reference point, we take the negative root of the equation.
v_y=-√(2*(-9,81 m/s^2 )*(-99,4 m) )=44,1613 m/s 
So, if we don’t take the air resistance into account, Dan would have achieved an velocity of 44,16 m/s when he reached the airbag.
I hope everything was clear with my explanation. If you need anything else, let me know. Have a great day :D
The correct answer for your question since you didn't post the choices i believe are Physical, Emotional, spiritual sometimes, intellectual, environmental, and lastly, social.
I hope this is correct and hope this rings a bell?