Answer:
D) Rotate the loop about an axis that is directed in the z direction and that passes through the center of the loop
Explanation:
The magnetic flux is defined as the total magnetic field times the area normal to the magnetic field lines.
Mathematically:
where:
area vector directed normal to the surface
magnetic field vector
- Now as the area of the loop changes there will be a change in magnetic flux.
- Change in the magnetic field strength will also change the flux accordingly.
- Since the loop lies in the x-y plane we will get a different area of normal projection on the plane whenever the inclination of the loop changes in xy-plane.
- Since the area of the loop all remains in the magnetic field while it rotates about the z axis to its center hence this will not affect area subjected to the magnetic field.
M1V1 + M2V2 = M1V1' + M2V2'
where:
M1 is the mass of the large marble = 0.05 kg
V1 is the initial velocity of the large marble = 0.6 m/sec
M2 is the mass of the small marble = 0.03 kg
V2 is the initial velocity of the small marble = 0 m/sec (marble is at rest)
V1' is the final velocity of the large marble = -0.2 m/sec
V2' is the final velocity of the small marble that we want to calculate
Substitute with the givens in the above equation to get V2' as follows:
M1V1 + M2V2 = M1V1' + M2V2'
(0.05)(0.6) + (0.03)(0) = (0.05)(-0.2) + 0.03V2'
0.03 = -0.01 + 0.03V2'
0.03V2' = 0.03+0.01 = 0.04
V2' = 0.04/0.03
V2' = 1.334 m/sec
Answer:
9.38J
Explanation:
mass = 0.425kg
height (h) = 2.25m
g = 9.81m/s^2
Gravitational potential energy (PE) = mgh
Plug in all info you got:
(0.425kg)(9.81m/s^2)(2.25m) = 9.38J
nobody this is a app to help others
For decrease: it’s the first and last one and for increase it’s the middle two