Answer:
-3.4 eV ()
Explanation:
In a hydrogen atom, the energy of an electron is given by:
where
n is the principal quantum number
For an electron in the 2s orbital,
n = 2
So substituting this value into the formula, we find
And converting this into Joules, we have
Speed is a scalar quantity, meaning it has no direction. Velocity is a vector, meaning that it has a specific direction associated with it.
Many people use these interchangeably, but it is not always correct to do so.
C. meter per second
Velocity and speed share the same SI unit.
Answer:
Explanation:
Given
mass of each railroad is M
first railroad is moving with velocity and other two's with
conserving Momentum
where v_f is the final velocity of combined system
(b)Initial Kinetic Energy
Final Kinetic Energy
Loss in Kinetic Energy
Answer:
OSCILLATING MOTION, LINEAR MOTION, ROTARY MOTION etc
Explanation:
LINEAR MOTION is anything that moves in a straight line, like our linear actuators. Time, as far as we know, moves in a linear fashion. Just like rotary devices, you can find linear cylinder in electric, pneumatic or hydraulic options. They have driven the field of automation, manufacturing, robotics, and others into a new age because, in the past, rotary motion was the only means to create motion.
Rotary motion is anything that moves in a circle. This type of motion was among the first discovered in ancient times. Think of a spinning wheel on which people spun wool. A car's engine works the same way.
Something that oscillates moves back and forth. Anything that repeats the motion cycle after a certain period is considered to be oscillating. This type of motion is found everywhere in our world: a sprinkler system, the pendulum of a clock or even sound waves.