There were 2 people
Tomas Edison
Joseph Swan
Tomas Edison invented the first practical incandescent lightbulb.
Sir Joseph Swan is most famous for his role in the development of the first incandescent lightbulb.
Answer:
Explanation:
Velocity of Top most point of wheel is twice the Velocity of centre of mass of wheel
Thus angular velocity is given by
#1).
transfers energy ... both kinds of waves do that
travels in a vacuum ... mechanical waves can't do that
has frequency ... both kinds of waves have
requires a medium ... electromagnetic waves don't need it
2).
infrared, visible, ultraviolet
listed from longest to shortest wavelength
Answer:
The work done in stretching the spring is 0.875 J.
Explanation:
Given that,
Force = 140 N
Natural length = 60-40 = 20 cm
Stretch length of the spring = 65-60 = 5 cm
We need to calculate the spring constant
Using formula of Hooke's law
We need to calculate the work done
On integration
Hence, The work done in stretching the spring is 0.875 J.
Number two is the Alpha particle
Number one is the Gamma-ray
Number three is the Beta particle
Hope this helped.