Answer:
Explanation:
There are three types of waves mainly.
1. Mechanical waves : Which needs a medium for there propagation. For example, sound waves
2. Non mechanical waves : Which do not need a medium or their propagation.
for example, light waves
3. Electromagnetic waves : Which are produced due to the interaction of electric and magnetic field. for example, X rays, light waves
The wave motion are of two types.
1. Transverse wave motion
2. Longitudinal wave motion
Answer:
Like charges repel each other; unlike charges attract. Thus, two negative charges repel one another, while a positive charge attracts a negative charge. The attraction or repulsion acts along the line between the two charges. The size of the force varies inversely as the square of the distance between the two charges.
Answer:
3.4 Joules
Explanation:
the KE= 1/2 mv^2
By the equation v^2 = u^2 + 2as
where v is the final velocity
u is the initial velocity=0
a is the acceleration=-9.81
s is the displacement = 3.25-1.5=1.75(downwards)=-1.75
v^2= 2(-9.81)(-1.75)
v^2=34.335
KE: 1/2(0.2)(34.335)
=3.4335
=3.4 Joules( rounded to 1 decimal places)
Answer:
t' = 458.26 μs
Explanation:
given,
distance traveled by the cosmic ray = 60 Km
time = 500 μs
time taken for the journey according to cosmic ray = ?
now,
v = 1.2 x 10⁸ m/s
according to time dilation formula
t' = 500 x 0.9165
t' = 458.26 μs
