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A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T . The normal to the loop is parallel to a unit vector n = - 0.6 i - 0.8 j. Calculate the magnitude of the torque on the loop.
A locomotive is pulling a number of identical wagons along a level track and accelerating. Friction is negligible. Starting from the last wagon, the ratio of the forces between adjacent wagons is.
Draw the field lines for two infinitely long wires one running along the y axis and one running along the x axis, both charged uniformly with lambda C/m. Make an expression for the electric field E at any point in the xy plane in terms of x and y...
What angle did the hawk make with the horizontal throughout its descent? For how long did the mouse enjoy the free fall.
The coefficient of kinetic friction between a 20 Kg box and the floor is 0.40. How much work does a pulling force do on the box in pulling it 8.0 m at the constant speed? The pulling force is directed 390 above the horizontal.
a satellite of a distant planet has a period of revolution around the planet of 3.89*10^5 seconds, determine the centripetal acceleration of the satellite
When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, What is its internal resistance
How far does the car go before it stops. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s.
A double-slit experiment is set up using red light (l = 714 nm). A first order bright fringe is seen at a given location on a screen. What wavelength of visible light (between 380 nm and 750 nm) would generate a dark fringe at the identical locati..
Explain how many atoms strike the umbrella each second? Assume that the wind blows horizontally so that the gravity can be neglected.
What is the maximum positive potential energy. Write down an expression for U as a function of x, with U in joules and x in meters.
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
define the magnitude of the external field. The Speed time graph of a particle moving along a fixed direction is shown below. Obtain the distance travelled by the particle between t=0 and t=10s. What is the average of the particle over this interva..
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