Answer:
Explanation:
Let the initial velocity of A and B be 2U₁ and U₁ at a common angle of θ.
At maximum height H , Velocity v =0
For vertical displacement
Vertical component = U₁ Sinθ and
v² = u² - 2gH
H = u² / 2g
H₁ = (2U₁ sinθ)² / 2g
H₂ = (U₁ sinθ)² / 2g
H₁ /H₂ = 4/1
The speed of light is the same in all frames of reference, regardless of the frame of reference or how it's moving.
Answer: Option D and E
Explanation: Across the electromagnet spectrum, the frequency increases but the wavelength reduces.
This implies that radio waves have the longest wavelength but the smallest frequency, while gamma rays have the shortest wavelength but the highest frequency.
This implies that there is an inverse relationship between wavelength and frequency.
Of all the technologies listed above, wireless internet has the highest frequency hence making it have the shortest wavelength.
Also by comparing values from the data given to us above, it is possible for some wireless internet device to operate within the same frequency range of the microwave.
Answer:
The basic principle on which the electric iron works is that when a current is passed through a piece of wire, the wire heats up. This heat is distributed to the sole (base) plate of the electric iron through conduction.
