Field Theory Answers

A particle moves along an arc of a circle of radius R according to the law l = a sin ωt, where l is the displacement from the initial position measured along the arc, and a and ω are constants. Assuming R = 1.00 m, a = 0.80 m, and ω = 2.00 rad/s, find: (a) the magnitude of the total acceleration of the particle at the points l = 0 and l = ±a; (b) the minimum value of the total acceleration wmin and the corresponding displacement lm.

Two boats, A and B, move away from a buoy anchored at the middle of a river along the mutually perpendicular straight lines: the boat A along the river, and the boat B across the river. Having moved off an equal distance from the buoy the boats returned. Find the ratio of times of motion of boats τA/τB if the velocity of each boat with respect to water is η = 1.4 times greater than the stream velocity.

Write K G equation

Write lorenz transformation.

What is position probability density.

An electric car is being driven through a town at 22 m/s. The kinetic energy of the car is 222640 J. Calculate the mass of the car.

Two unequal charge q1 and q2 placed at some separation . Consider middle point of line joining the changes four directions are drawn (up , down, right, left) which is correct and more than one can be true.
a) left, right are equivalent directions .
b)up, down are equivalent directions.
c) up ,down,right ,left are equivalent directions.
d) none of two directions are equivalent

Two unequal charge q1 and q2 placed at some separation . Consider middle point of line joining the changes four directions are drawn (up , down, right, left) which is correct and more than one can be true.
a) left, right are equivalent directions .
b)up, down are equivalent directions.
c) up ,down,right ,left are equivalent directions.
d) none of two directions are equivalent

The electric held in a region is given by E =20i +30j in certain units. As one goes a small distance dl in the direction of
n vector =30i-20j .The potential will

(a) increase

(b) decrease

(c) remain constant

(d) change sign

Choose the correct option .More than one option could be correct

The diagram shows two positively charged spheres, one with three times the charge of the other. The spheres are 16 cm apart, and the force between them is 0.28 N. What are the charges on the more charged sphere?
(Hint use coulombs law where K= 8.9×109 kg⋅m3⋅s−2⋅C−2.)