Answer:
A. 1.96 m/s.
B. 0.35 m.
C. 0.15 m.
Explanation:
A.
Velocity of a wave,v = f * lambda
Where,
f = frequency of the wave
Lambda = wavelength
Given:
T = 2.8 s
f = 1/T
= 1/2.8
= 0.36 hz
Lambda = 5.50 m
V = 5.5 * 0.36
= 1.96 m/s.
B.
Amplitude, a = distance/2
= 0.7/2
= 0.35 m.
C.
Amplitude, a = 0.3/2
= 0.15 m.
Electromagnetism is the interaction between charged particles. It is very long ranged. It can manifest as a force causing like charges to repel and unlike charges to attract. ... The weak nuclear force is very short ranged and is not a force at all.
Answer:
no additional information required.
Explanation:
given,
vertical height, h = 35 m
acceleration due to gravity, g = 9.8 m/s²
time taken by the bullet to fall in the water = ?
initial vertical velocity of the bullet = 0 m/s
using equation of motion for the time calculation
![s = ut + \dfrac{1}{2}gt^2](https://tex.z-dn.net/?f=s%20%3D%20ut%20%2B%20%5Cdfrac%7B1%7D%7B2%7Dgt%5E2)
![h= 0\times t + \dfrac{1}{2}\times g \times t^2](https://tex.z-dn.net/?f=h%3D%200%5Ctimes%20t%20%2B%20%5Cdfrac%7B1%7D%7B2%7D%5Ctimes%20g%20%5Ctimes%20t%5E2)
![t = \sqrt{\dfrac{2h}{g}}](https://tex.z-dn.net/?f=t%20%3D%20%5Csqrt%7B%5Cdfrac%7B2h%7D%7Bg%7D%7D)
![t= \sqrt{\dfrac{2\times 35}{9.8}}](https://tex.z-dn.net/?f=t%3D%20%5Csqrt%7B%5Cdfrac%7B2%5Ctimes%2035%7D%7B9.8%7D%7D)
t = 2.67 s
The time taken by the bullet to fall in the ocean is equal to 2.67 s.
Hence, there is no additional information required.
Answer:
radio waves, microwaves, infrared, visible, UV, X-rays, gamma rays
Explanation:
Electromagnetic waves consist of oscillating electric and magnetic fields which vibrate in a direction perpendicular to the direction of motion of the wave (transverse wave). Electromagnetic waves travel in a vacuum with a speed of
(speed of light), and they are classified into 7 different types according to their wavelength.
From longer to shorter wavelength, these types are:
Radio waves (wavelength > 30 cm)
Microwaves (30 cm -
)
Infrared (
)
Visible light (750 nm - 380 nm)
UV radiation (380 nm - 8 nm)
X-rays (8 nm - 6 pm)
Gamam rays (< 6 pm)