Answer:
a
Explanation:
because it is balanced and it is 40
Answer:
0J
Explanation:
The gravitational potential energy of the body is 0J because the height is at 0m.
Gravitational potential energy is a form of energy which is highly dependent on the position of a body. The relative position of a body in space accounts for the amount of gravitational potential energy they posses.
- A body at height 0m has no gravitational potential energy:
Gravitational potential energy = mgh
m is the mass of the body
g is the acceleration due to gravity
h is the height
So, if h = 0, Gravitational potential energy will become 0.
Answer:
255.4 N/m
Explanation:
We can consider the system eyeball-attached to the musculature as a mass-spring system in simple harmonic motion, whose frequency of oscillation is given by
where in this case, we know:
f = 29 Hz is the frequency of oscillation
k is the spring constant, which is unknown
m = 7.7 g = 0.0077 kg is the mass of the eyeball
Solving the equation for k, we find the spring constant of the musculature attached to the eyeball:
C) 2 ohms I think don't fully trust my answer I suck at math but I think it's c
Answer:
The perceived frequency is higher than the actual emitted sound frequency. that means that the received sound waves are of shorter wavelength.
Explanation:
When the source of a sound wave is moving toward the observer, the perceived frequency of the wave changes in relation to the observer producing a change in pitch. The effect is called Doppler effect in honor of the physicist who formulated the physical explanation.
In the case of the sound source approaching the observer, the perceived frequency is higher than that actually emitted by the sound source.
