Answer:
2.88m/s
Explanation:
Given parameters:
Displacement = 7.2m
Time taken = 2.5s
Unknown:
Velocity of the plane = ?
Solution:
Velocity is the displacement divided by the time taken.
Velocity =
So;
Velocity =
= 2.88m/s
Answer:
Gravity
Explanation:
Hope this helps:) Have a good day!!
Answer:
Options d and e
Explanation:
The pendulum which will be set in motion are those which their natural frequency is equal to the frequency of oscillation of the beam.
We can get the length of the pendulums likely to oscillate with the formula;
![L =\frac{g}{w^{2} }](https://tex.z-dn.net/?f=L%20%3D%5Cfrac%7Bg%7D%7Bw%5E%7B2%7D%20%7D)
where g=9.8m/s
ω= 2rad/s to 4rad/sec
when ω= 2rad/sec
![L= \frac{9.8}{2^{2} }](https://tex.z-dn.net/?f=L%3D%20%5Cfrac%7B9.8%7D%7B2%5E%7B2%7D%20%7D)
L = 2.45m
when ω= 4rad/sec
![L=\frac{9.8}{4^{2} }](https://tex.z-dn.net/?f=L%3D%5Cfrac%7B9.8%7D%7B4%5E%7B2%7D%20%7D)
L = 9.8/16
L=0.6125m
L is between 0.6125m and 2.45m.
This means only pendulum lengths in this range will oscillate.Therefore pendulums with length 0.8m and 1.2m will be strongly set in motion.
Have a great day ahead
Answer:
A. Atoms of the same element that have different numbers of nutrions.