<span> </span>J. J. <span>Thomson discovered cathode rays</span>
Answer:
the answer is B
Explanation:
wave x has the highest hertz making it the answer
There are six steps to this process , I uploaded step one and as you can see you can get all six on Quizlet:). Good luck
Answer: 2.04 s
Explanation:
Let the initial velocity be v, Angle of projectile be
Then the horizontal component = v cos θ = 16 m/s
Vertical component of velocity = v sin θ = 20 m/s
Time taken to reach the highest point is half the time taken for total flight.
Time for total flight,


Thus, the football takes 2.04 s to rise to the highest point of its trajectory.
PE = (weight) x (height)
= (mass) x (gravity) x (height)
= (410 kg) x (9.8 m/s²) x (12 m)
= (410 x 9.8 x 12) kg-m²/s²
= 48,210 joules (rounded)