Questions
For each of the actions depicted below, a magnet and/or metal loop moves with velocity v?
For each of the actions depicted below, a magnet and/or metal loop moves with velocity v? (v? is constant and has the same magnitude in all parts). Determine whether a current is induced in the metal loop. If so, indicate the direction of the current in the loop, either clockwise or counterclockwise when seen from the right of the loop. The axis of the magnet is lined up with the center of the loop.
Part A
For the action depicted in the figure, (Figure 1) indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right of the loop).
- a.) clockwise
- b.) counterclockwise
- c.) zero
Part B
For the action depicted in the figure, (Figure 2) indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right of the loop).
- a.) clockwise
- b.) counterclockwise
- c.) zero
Part C
For the action depicted in the figure, (Figure 3) indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right of the loop).
- a.) clockwise
- b.) counterclockwise
- c.) zero
Part D
For the action depicted in the figure, (Figure 4) indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right of the loop).
- a.) clockwise
- b.) counterclockwise
- c.) zero
Part E
For the action depicted in the figure, (Figure 5) indicate the direction of the induced current in the loop (clockwise, counterclockwise or zero, when seen from the right of the loop).
- a.) clockwise
- b.) counterclockwise
- c.) zero
In: Physics
An electric eel (Electrophorus electricus) can produce a shock of up to 600 V and a...
An electric eel (Electrophorus electricus) can produce a shock of up to 600 V and a current of 1 A for a duration of 2 ms, which is used for hunting and self-defense. To perform this feat, approximately 80% of its body is filled with organs made up by electrocytes. These electrocytes act as self-charging capacitors and are lined up so that a current of ions can easily flow through them.
a) How much charge flows through the electrocytes in that amount
of time?
b) If each electrocyte can maintain a potential of 100 mV, how many
electrocytes must be in series to produce the maximum shock?
c) How much energy is released when the electric eel delivers a
shock?
d) With the given information, estimate the equivalent capacitance
of all the electrocyte cells in the electric eel.
In: Physics
A 10.0 v battery, a 5.00 ohm resistor, and a 10.0 H inductor are connected in...
In: Physics
2) A charge is accelerated from rest through a potential difference V and then enters a...
In: Physics
2. Suppose that in the U.S., the income velocity of money (V) is constant. Suppose, too,...
2. Suppose that in the U.S., the income velocity of money (V) is constant. Suppose, too, that every year, real GDP grows by 2.5 percent (%∆Y/year = 0.025) and the supply of money grows by 10 percent (%∆M/year = 0.10).
a. According to the Quantity Theory of Money, what would be the growth rate of nominal GDP = P×Y? Hint: %∆(X×Y) %∆X + %∆Y.
b. In that case, what would be the inflation rate (i.e. %∆P/year)?
c. If the central bank wants the inflation rate to be 0%, what money supply growth rate (i.e. - %∆M per year) should it set?
In: Economics
Suppose that electrons are accelerated through a potential difference of 80 × 103 V. These collide...
Suppose that electrons are accelerated through a potential difference of 80 × 103 V. These collide with a metal slab and emit electromagnetic radiation.
a) Determine the kinetic energy of an individual electron. Express the answer in Joules and electron Volts (1.0 eV = 1.6 × 10−19 J.)
b) The electron collides with the metal and a photon is emitted. Determine the maximum frequency that is possible for the emitted photon.
In: Physics
An 8.5 nF capacitor is charged up by a 20 V battery. The battery is removed...
An 8.5 nF capacitor is charged up by a 20 V battery. The battery is removed and replaced with a coil of wire. It then takes 7.3 x 10-5 s for this now LC circuit to undergo a full charging cycle. (a) Calculate the inductance of the coil
(b) Calculate the total energy of the circuit
(c) Calculate the charge on the capacitor after 1 x 10-5 s.
In: Physics
The velocity function of a particle moving along a line is given by the equation v(t)...
The velocity function of a particle moving along a line is given by the equation v(t) = t2 - 2t -3. The particle has initial position s(0) = 4.
a. Find the displacement function
b. Find the displacement traveled between t = 2 and t = 4
c. Find when the particle is moving forwards and when it moves backwards
d. Find the total distance traveled between t = 2 and t = 4
e. Find the acceleration function, and use it to find the acceleration of the particle at t = 3
In: Math
A block of mass 4m moves on a flat horizontal surface at speed v, and strikes...
A block of mass 4m moves on a flat horizontal surface at speed
v, and strikes another block of mass m, that is attached via a
horizontal spring to another block of mass 2m. The two masses are
stationary. The spring constant is k. All collisions are
completely inelastic and there is no friction anywhere.
What is the velocity of the center of mass when the spring is ¼ the
way to max compression.
In: Physics
A. Chapter 19, Problem 09 The potential at location A is 405 V. A positively charged...
A. Chapter 19, Problem 09 The potential at location A is 405 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 942 V, and when released from rest from this spot, the particle arrives at B with twice the speed it previously had, or 2 vB. Find the potential at B. Number ____ Units _____
B. Chapter 19, Problem 13 Two point charges, +3.40 μC and -7.80 μC, are separated by 3.50 m. What is the electric potential midway between them? Number ___ Units ___
C. Chapter 19, Problem 14 Two particles with charges +10e and -10e are initially very far apart (effectively an infinite distance apart). They are then fixed at positions that are 6.06 x 10-11 m apart. What is EPEfinal - EPEinitial, which is the change in the electric potential energy? Number ___ Units ___
In: Physics