Answer:
The answer to your question is Alpha particles.
Explanation: An electron released by a radioactive nucleus that causes a neutron to change into a proton is called a beta particle.
D. Interaction between a magnetic South Pole and a copper bar
Answer:0.906 N/m
Explanation:
Given
time period 
mass 
System can be considered as spring mass system
Time Period of spring mass system is given by
squaring
The mechanical enegia is the sum of the kinetic energy plus the potential energy
Kinetic energy = (1/2) * m * v ^ 2
Potential energy = m * g * h
Mechanical energy = (1/2) * m * v ^ 2 + m * g * h
What is the mechanical energy of the sled at the top?
Mechanical energy = (1/2) * m * v ^ 2 + m * g * h
Mechanical energy = (1/2) * (50) * (0) ^ 2 + (50) * (9.8) * (7.5) = 3675
Mechanical energy = 3675J
What is the mechanical energy of the sled at the bottom?
By conservation of energy we have that the energy in point 1 is equal to the energy in point 2
Mechanical energy = 3675J
What is the speed of the sled at the bottom of the hill?
Mechanical energy = 3675J = (1/2) * m * v ^ 2
clearing up v we have
(1/2) * (50) * v ^ 2 = 3675
v ^ 2 = 3675 * (2) * (1/50)
v = root (3675 * (2) * (1/50)) = 12.12 m / s
answer
3675J
3675J
12.12 m / s
Explanation:
It is given that,
Net force acting on the electron, 
Displacement, d = 5 cm = 0.05 m
(a) Let 
is the change in kinetic energy of the electron. It can be calculated using work energy theorem. Mathematically, it is given by :
(b) Initial speed of the electron, u = 0
Again using the work energy theorem as :
Hence, this is the required solution.
