The acceleration due to gravity at the surface of a planet depends on the planet's mass and size; therefore other planets will h
1 answer:
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Answer:
Explanation:
Power Dissipated in a resistor is given by two methods i.e.
and
where
both formula gives Power but Former is used when voltage is constant i.e. when resistors are in parallel and the later is used when the resistor are in series .
Though can also be used in series but we have to calculate the Potential drop across each resistor then we can apply the formula.
Similar is with
First we have to calculate current through each resistor then we can apply the Formula
Answer:
a) 1.68 N b) 0 c) 14.5º
Explanation:
a)
- The force on a charge moving in a magnetic field, is a vector perpendicular to the plane defined by the velocity of the charge and the magnetic field.
- The magnitude of the force F is given by the following expression:
- where q= magnitude of the charge of the particle, v=velocity of the particle, B= magnitude of the magnetic field, and θ= angle between v and B.
- Replacing by the known values in (1) we have:
- The maximum possible value of F happens when sin θ =1
- This means that v and B are perpendicular each other (in the same plane)
- So, Fmax = 1.68 N
b)
- If the maximum possible value of F happens when sin θ = 1, the minimum possible is when sin θ = 0.
- In this case, when v and B are parallel each other, the force is just 0.
c)
- If the force is 0.25 of the maximum possible, (which is when sin θ =1), this means that sin θ = 0.25, as it can be seen below:
- The angle between the velocity v and the magnetic field B is 14.5º.