Answer:
If one cup falls down then there will be 59 cups left.
Answer:
The correct answer is d Both the observer's are correct
Explanation:
We know by postulates of relativity that laws of physics are same in different inertial frames.
Thus for each of the frames they make observations related to their frames and since the observations are true for their individual frames they both are correct. But when we compare the two frames we need to use transformation equations to compare both the results.
Answer:
Magnetic force, F = 0.24 N
Explanation:
It is given that,
Current flowing in the wire, I = 4 A
Length of the wire, L = 20 cm = 0.2 m
Magnetic field, B = 0.6 T
Angle between force and the magnetic field, θ = 30°. The magnetic force is given by :
![F=ILB\ sin\theta](https://tex.z-dn.net/?f=F%3DILB%5C%20sin%5Ctheta)
![F=4\ A\times 0.2\ m\times 0.6\ T\ sin(30)](https://tex.z-dn.net/?f=F%3D4%5C%20A%5Ctimes%200.2%5C%20m%5Ctimes%200.6%5C%20T%5C%20sin%2830%29)
F = 0.24 N
So, the force on the wire at an angle of 30° with respect to the field is 0.24 N. Hence, this is the required solution.