Answer:
Transverse motion does not produced a doppler effect for a star. As, the doppler effect are occurred when the object are emitting light either in the direction towards the observer or moving away. The various astronomical objects are moving and the observer observed the blue wavelength of the light.
Doppler effect in the star is the process when the observer moves towards the star then it seems like the star move towards the observer.
Answer:
4.30 x 10⁵ N/C
Explanation:
Two positive +3.0-μC point charges at opposite corners of the square creates equal and opposite electric field at the center. hence the electric field by these two positive charges at opposite corners becomes zero.
= length of the square of side = 0.50 m
= distance of the center from each corner = 
Magnitude of net electric field at the center is given as
Push is in, pull is out
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Contact Forces
Frictional Force
Tension Force
Normal Force
Air Resistance Force
Applied Force
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Action-at-a-Distance Forces
Gravitational Force
Electrical Force
Magnetic forces
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Very bottom, last part
First drawing: Arrow down above box
Second drawing: Arrow up from below box
Answer:
5.16 m/s
Explanation:
The tension in the string provides the centripetal force that keeps the object spinning in circular motion, therefore we can write:
where
T is the tension
m is the mass of the object
v is the speed
r is the radius of the circle
Here we have:
m = 280 g = 0.280 kg
r = L = 0.97 m (the radius of the circle is the length of the string)
The maximum tension allowed is
T = 7.7 N
Therefore, by solving for v, we find the maximum speed allowed before the string breaks:
