The whole of the data that you have researched on
Answer:
About eq (1)
when a charged particle (electron) enters into the magnetic field which is perpendicular to direction of motion than there will be magnetic force on particle and particle will travel in circular path in with constant speed.
So using force balance on charged particle:
Since particle is traveling at constant speed, So acceleration is zero, and
Fc = centripetal force on particle
Fm = magnetic force on electron =
q = charge on electron = e
since magnetic field is perpendicular to the velocity of particle, So theta = 90 deg
sin 90 deg = 1
So,
About equation 2:
When this charged particle is released from rest in a potential difference V, and then it enters into above magnetic field, then using energy conservation on charge particle
KEi = 0, since charged particle started from rest
KEf = final kinetic energy of particle when it leaves
So,
From above equation (1) and (2)
Now
Run large amounts of cold water on your hand then report to your lab instructor.
Answer:
The correct answer is :A and C
Explanation:
According to the rule
1- Zeroes at the beginning of a number are never significant.
2- Zeroes at the end of a number are significant if there is a decimal point.
(a) 0.00012 s and 12000 s
0.00012 has 2 significant figure and 12000 has 2 significant figures
(b) 11.0 m and 11.00 m
11.0 has 3 significant figures and 11.00 has 4 significant figure.
(c) 0.0250 m and 0.205
0.0250 has 3 significant figure and 0.250 has 3 significant figures
(d) 250.0 L and 2.5×10−2L
250.0 has 4 significant figures and 2.5x10−2 has 2 sig figures.
So (a) and (c) pairs have same number of sig figures.
Answer:
The red ball has a greater kinetic energy, because it has a greater mass
Explanation:
Mass is directly proportional to kinetic energy, as one increases, so does the other