A long, straight wire carrying a current of 3.00 A moves with a constant speed v to the right. A 5-turn circular coil of diameter 1.25 cm, and resistance of 3.25 µΩ, lies stationary in the same plane as the straight wire. At some initial time, the wire is at a distance

d = 19.5 cm

from the center of the coil. 4.55 s later, the wire is at a distance 2d from the center of the coil. What is the magnitude and direction of the average induced current in the coil? Note that while the magnetic field varies over the diameter of the coil, it is very small and we will disregard this variation.

Suppose a 2-dimensional space is spanned by the coordinates (v, x) and that the line
element is defined by:

ds2 = -xdv2 + 2dvdx

i) Assuming that the nature and properties of the spacetime line element still hold,
show that a particle in the negative x-axis can never venture into the positive
x-axis. That is, show that a particle becomes trapped if it travels into the
negative x-axis.
ii) Draw a representative light cone that illustrates how a particle is trapped.

Draw a circuit with a battery of 90 V is connected to four resistors, R1 =10 Ω, R2,= 20 Ω , R3 =30 Ω and R4= 40 Ω, as follows. Resistors R1 and R2 are connected in parallel with each other, resistors R3 and R4 are connected in parallel with each other, and both parallel sets of resistors are connected in series with each other across the battery. (20 Points)

a. Find the equivalent resistor R12, for the partial circuits R1 and R2,

b. Find the equivalent resistor R34, for the partial circuits R3 and R4,

c. Find the equivalent resistor R1234, for the entire circuits with all four resistors R1, R2, R3, and R4

d. Find the current in the circuit with the single equivalent resistor R1234

e. Find the find the current and voltages across each of the partial circuits with resistors R12,

and R34.

e. Find the current and voltage across each of the four resistors R1, R2, R3, and R4

f. Find the power dissipated in each of the resistors R1, R2, R3, and R4

A fluid flow is defined by u = (0.4x2 + 2t) m/s and v = (0.8x + 2y) m/s, where x and y are in meters and t is in seconds.

Part A

Determine the magnitude of the velocity of a particle passing through point x = 12.8 m, y = 1 m if it arrives when t = 3 s.

V=

Part B

Determine the direction of the velocity of a particle passing through point x = 12.8 m, y = 1 m if it arrives when t = 3 s. Enter your answer as the angle θV, which the velocity makes with the x axis, measured counterclockwise from the positive x axis.

.

Part C

Determine the magnitude of the acceleration of a particle passing through point x = 12.8 m, y = 1 m if it arrives when t = 3 s.

Part D

Determine the direction of the acceleration of a particle passing through point x = 12.8 m, y = 1 m if it arrives when t = 3 s. Enter your answer as the angle θa, which the acceleration makes with the x axis, measured counterclockwise from the positive x axis.

In Mr. W Fireworkd, Inc. v. Ozuna, the Court of Appeals decided not to enforce a certain provision of the contract between the landowner, Mr. Ozuna, and the lessee, Mr. W Fireworks. Explain what provision of the lease Mr. W Fireworks sought to enforce and why the court refused to do so.

Let the present value from production be equal to V = 100, and this value can move either up (with factor u = 1.4) or down (with factor d = 1/u) per period. Suppose that at t=3 management has the option to invest 130 million in order to double the value of production. The risk free rate is 2%.

What is the expanded present value of this production facility if management has the opportunity to expand at t = 3

A person standing far away walks toward a plane mirror at a speed v, and the speed of the image is 2v relative to the person. Please compute the speed of the image relative to the person if the plane mirror is replaced by (a), a convex spherical mirror? (b), a concave spherical mirror?

A 100 F capacitor and a 225  resistor are connected in series with a 75.0 V battery. The switch is closed and the capacitor begins to charge.  

a)When does the capacitor hold 15.0 % of its maximum charge? Express your answer in milliseconds.

b)What is the voltage across the resistor at this same time?

Please state your answers as clear as possible and show all the steps and formulas used. Thank you!!!

There are no results for Drugs of Abuse Mr. V, a 47 year-old man, was recently promoted as a director of a transportation company. A routine inspection of the books shows that a large sum of money is missing. Subsequent investigation finds that Mr. V has been spending more than $20,000 a month to buy cocaine; currently he consumes 2-3 g/d. He also drinks several beers each day and 5-8 shots of vodka in the evening. He spends weekend nights in clubs, where he often consumes 2-3 pills of ecstasy. He began using drugs at age 18; during parties he mostly smoked cannabis (5-6 joints per weekend), but also tried cocaine. This “recreational use” came to an abrupt halt when he married at age 27 and entered a professional training program that allowed him to obtain his current job, now jeopardized by his cocaine use. 1. Is Mr. V addicted, dependent, or both? Explain your reasoning. (5points) 2. What is the reason for the use of several different addictive drugs at the same time? (5points) 3. Exogenous cannabinoids (marijuana) include several pharmacologically active substances, but the main psychoactive alkaloid is called __________________________. (2points) 4. When CB1 receptors are activated by marijuana it produces several effects. List at least 3 of the effects. (3points) 5. Ecstasy is a psychoactive drug primarily used for recreational purposes. Ecstasy increases the activity of three brain chemicals. Describe the three brain chemicals that it increases. (5points)