Answer:
Explanation:
Speed is a scalar quantity and it doesn't depend on direction
Speed is the total distance traveled divided by the total time taken
Speed = Total Distance / Total time taken
Given that,
A plane can traveled 3952 km in 3 hours normally.
So, it's normal speed is
Speed = total distance / total time
Speed = 3952 / 3
Speed = 1317.33 km/hr
Now, in cloudy skies it will traveled 184 km less than it's usually distance in the same time range.
Then, we want to find the speed in cloudy skies
Since we know that speed is total distance divide by total time,
We need to know the total distance in cloudy skies
Total distance = Normal distance travelled — delay due to cloudy skies
Total distance. = 3952 - 184
Total distance = 3768 km
Total time = 3 hours
Then,
Speed = total distance / total time
Speed = 3768 / 3
Speed = 1256 km/hr
The speed of the plane in cloudy skies is 1256 km/hr. The speed reduces because it traveled less distance for the same time.
The magnetic moment may be considered, therefore, to be a vector. The direction of the magnetic moment points from the south to north pole of the magnet (inside the magnet). The magnetic field of a magnetic dipole is proportional to its magnetic dipole moment.
Answer:
c. find the slope of the velocity time graph
Answer:
correct answer is b
Explanation:
The frequency of a wave depends on the properties of medium density and the elasticity properties change the amplitude depends on the energy carried by the wave, that is, the amplitude is proportional to the height of the wave (oscillation).
Consequently the amplitude of independent of the frequency because it depends on different factors.
Therefore when changing the amplitude the wavelength remains constant
the correct answer is b
Answer:
Angle of refraction.
Explanation:
Refraction is simply a change in direction of light rays as it enters into another medium.
In the diagram given above, θ2 is simply the angle of refraction showing us that the light ray has changed direction as it moves from one medium to another medium.