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Answer:D</h2>
Explanation:
Option A:
Surface waves are neither transverse nor longitudinal.They traverse perpendicularly or parallel to the wave's motion along the interface between different media.
Option B:
Transverse waves vibrate perpendicularly to the direction of the propagation of the wave.
Option C:
Sound is a longitudinal wave.Not a transverse wave.
Option D:
Transverse waves don't require a medium for propagation.But they propagate in medium too.
Answer:
a) T = 0.579 s
, b) T = 0.579 s
Explanation:
The great advantage of wave mechanics is that the general equations for different systems are the same, what changes are the physical parameters involved, the equation of motion is
x = A cos (wt +φ)
Where w is the angular velocity that is this case for being a solid body is
w = √ (mg d / I)
Where I is the moment of inertia and d the distance to the pivot point
The moment of inertia for a ruler hold one end is
I = 1/12 M L²
The lost is related to the frequency and is with the angular velocity
T = 1 / f
w = 2π f
w = 2π / T
T = 2π / w
T = 2π √ I / mgd
For our case
d = L
T = 2π √(1/12 M L²) / M g L)
T = 2π √(L/(12 g))
a) wood suppose it is one meter long (L = 1m)
T = 2π √ (1 / (12 9.8))
T = 0.579 s
b) metal length (L = 1m)
T = 2pi RA (1 / (12 9.8))
T = 0.579 s
The period does not depend on mass but on length
Answer:
1}can displacement be zero even when distance is not zero? Give example.
2}how can you get speed of an object from its distance time graph ?
3}how can you get distance of an object from its speed time graph ?
4}can a body has zero velocity and still acceleration? give example .
5}is it possible in straight line motion of particle having zero speed and a non zero velocity? explain .
Explanation:
Hi friend,1).yes,displacement can be zero even when distance is not zeroexample :- when a body travels in circular path , after covering a circle the distance cannot be zero,but its displacement is zero..2).by finding the slope of distance time graph,we can find the speed of the body.3).by finding the integrating of speed time graph ,we can find the distance.4).yes,a body can have zero velocity and still acceleration.example- in vertically upward projected body,at its highest point,the velocity becomes zero but still acceleration due to gravity acts on it 5).no its not possible ..when the speed is zero..its velocity will be zero
Answer:
1. False
2. True
3. True
Explanation:
1- False —> The relation between electric potential and electric field is given such that
Therefore, for a uniform E field, electric potential is linearly proportional to the distance.
2- True —> The electric field lines always cross the equipotential lines perpendicularly.
3- True —> In order to be a potential difference, one source of electric field is enough. The electric potential will decrease radially according to the following formula:
There is no test charge in the formula, only the source charge. Even when there is no test charge, the potential difference between points in space can exist.
V=vnaut+at 0(want it to stop)=25+-8t(negative accel cuz its deceling)
-25/-8=t t=3.125 seconds or with sig figs 3.1 seconds
x=xnaut+vnaut*time+1/2*a*time^2
x(where it ends up)=0(we start distance from when it started to brake)+25*3.1+1/2*-8*3.1^2=39.06 meters or 39.1 meters
x=0+25*3.1-.5*8*3.1^2 is the same equation as above with nothing written in. Are you in physics ap or reg? either way friend me lol(just joined website tonight)