Answer:
The direction of the force will be towards the east
Explanation:
From the question we are told that
The direction of the downward
Generally according to Fleming's right-hand rule(
Thumb - direction of force
Middle finger - direction of current
Index finger - direction of the magnetic field
) and the fact that the earth magnetic field acts from south to north with respect to the four cardinal points then the direction of the force will be toward the east with respect to the four cardinal point on the earth
V1T1=V2T2. vi = 25L T1=273+20 V2=273+35
Answer:
B
Explanation:
kinetic energy (KE) is the energy possessed by moving bodies. It can be expressed as:
KE = m
Where: m is the mass of the object, and v its speed.
For example, a stone of mass 2kg was thrown and moves with a speed of 3 m/s. Determine the kinetic energy of the stone.
Thus,
KE = x 2 x
= 9
KE = 9.0 Joules
Assume that the speed of the stone was 4 m/s, then its KE would be:
KE = x 2 x
= 16
KE = 16.0 Joules
Therefore, it can be observed that as speed increases, the kinetic energy increases. Thus option B is appropriate.
Given Information:
Inductance = L = 20 mH
Capacitance = C = 0.200 µF
Current = I = 0.100 A
Required Information:
Potential difference = V = ?
Answer:
Potential difference = 31.62 V
Explanation:
The energy stored in the electric field is given by
Ue = ½CV²
The energy stored in the magnetic field is given by
Um = ½LI²
From the principle of conservation of energy,
Ue = Um
½CV² = ½LI²
CV² = LI²
V² = LI²/C
V = √LI²/C
V = √(20x10⁻³*0.100²)/0.200x10⁻⁶
V = 31.62 V