Answer:
The speed of the electron is v = 1.01 x 10¹⁵ m/s
Explanation:
Given data,
The mass of the electron, m = 9.11 x 10⁻³¹ kg
The radius of the circle, r = 2.00 x 10⁻² m
The force acting on electron, F = 4.60 x 10⁻¹⁴ N
The speed of the electron, v = ?
The centripetal force of the electron is given by
F = mv² / r
∴ v² = Fr/m
v =√(Fr/m)
Substituting the given values in the above equation,
v =√( 4.60 x 10⁻¹⁴ x 2.00 x 10⁻² / 9.11 x 10⁻³¹ )
v = 1.01 x 10¹⁵ m/s
Hence, the speed of the electron is v = 1.01 x 10¹⁵ m/s
Answer:2.05 m
Explanation:
Given
Mass of sled
initial speed
coefficient of kinetic Friction
According to work-energy theorem work done by all the forces is change in Kinetic energy
,where d= distance moved
Answer:
The correct option is : B. stagnation
Explanation:
Air mass is a volume of air, which is described on the basis of water vapor content and temperature. It has the ability to adapt to the characteristics of surface below it and can travel thousands of miles from its source region.
An ideal source region of an air mass must fulfill the following two criteria:
1. It should be a large and uniform area.
2. the area should have stagnant circulation of atmospheric air .
The answer is A. 1000 times smaller
The metric prefix mili- is used to signify something 1000 times smaller than a measure. For example in 1 meter there are 1000 milimeters. Therefore; A is correct.
Hope this helped. Have a great night!