Frequency= velocity of light/wave length
Fr= 3×10^8/510×10^-9
Frequwency=5.88×10^14 Hz
Answer:
The number of complete vibration or wave made in
one second is called frequency.
Answer:
Mg Cosθ
Explanation:
mass of block = M
Angle of inclination = θ
coefficient of friction = μk
The force of gravity acts of the block is Mg
there are two components of the weight
the component parallel to the inclined plane is Mg Sinθ
the component perpendicular to the plane of inclined is Mg Cosθ
So, the normal force exerted by the inclined is Mg Cosθ
Answer:
Velocity v = 120 km/h
Time t = 30 s
Let Distance be d
First, we need to convert 120 km/h into m/s
1 km/h = (1000m)/(3600 s) = 5/18 m/s
So, 120 km/h = 120×5/18 m/s
So, v = 200/6 m/s
Now, velocity = distance/time
So d = v×t
So, d = (200/6) × 30
So, d = 1000 m
So, d = 1 km
Thus, distance travelled is 1 km
Explanation:
Answer:
Because this pole is different from the original pole that magnetized the paperclips, the top paperclip will become demagnetized in the opposite direction and the bottom paperclip will be repelled away
