Answer:
0.32 V
Explanation:
N = 10, A = 0.23 m^2, B = 0.47 T, t = 0.34 s
The average induced emf is given by
e = - N dФ / dt
Where, dФ be the change in magnetic flux in time dt.
dФ / dt = d / dt (B A) = A dB/dt
So,
e = - 10 x 0.23 x 0.047 / 0.34 = - 0.32 V
The negative sign shows the direction of induced emf.
There are many skills that scientists don't use to learn about the world.
These skills include playing the harmonica, riding a unicycle, and asking
others to choose from a list and then not telling them what's on the list.
Answer:
x' = 1.01 m
Explanation:
given,
mass suspended on the spring, m = 0.40 Kg
stretches to distance, x = 10 cm = 0. 1 m
now,
we know
m g = k x
where k is spring constant
0.4 x 9.8 = k x 0.1
k = 39.2 N/m
now, when second mass is attached to the spring work is equal to 20 J
work done by the spring is equal to
x'² = 1.0204
x' = 1.01 m
hence, the spring is stretched to 1.01 m from the second mass.
Answer:
The terrestrial planets are closer to the sun.
Explanation:
Answer:
A. Gamma decay
Explanation:
A form of nuclear decay in which the atomic number is unchanged is a gamma decay.
The atom has undergone a gamma decay.
In a gamma decay, no changes occur to the mass and atomic number of the substance.
- Gamma rays have zero atomic and mass numbers.
- When they cause decay, they cause no change to the mass and atomic numbers.
- They simply produce gamma rays during such reactions and these rays are very energetic.
