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A compass needle free to turn in a horizontal plane is placed at the centre of circular coil of 30 turns and radius 12 cm. The coil is in a vertical plane making an angle of 45º with the magnetic meridian. When the current in the coil is 0.35 A, the needle points west to east.
(a) Determine the horizontal component of the earth's magnetic field at the location.
(b) The current in the coil is reversed, and the coil is rotated about its vertical axis by an angle of 90º in the anticlockwise sense looking from above. Predict the direction of the needle. Take the magnetic declination at the places to be zero.
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b, What is her average speed over the entire trip
Take the gravitational constant to be = 6.67×10^-11 Nm^2/kg, the mass of the earth to be = 5.97×10^24 kg, and the radius of the Earth to be = 6.38×10^6 m.
On the screen of a multiple-slit system, the interference pattern shows bright maxima separated by 0.86° and seven minima between each bright maximum. How many slits are there
A car rounds a banked curve. The radius of curvature of theroad is R, the banking angle is ?, and the coefficient of staticfriction is µ. Determine the range of speeds the car can have without slipping up or down the road
q. after the near spacecraft passed mathilde on some occasions rocket propellant was expelled to adjust the spacecrafts
question how much energy can be stored in a capacitor with two parallel plates each with an area of 15.0 cm2 and
Two newly discovered planets follow circular orbits around a starin a distant part of the galaxy. The orbital speeds of the planetsare determined to be 44.3 km/s and 60.5 km/s. The slower planet'sorbital period is 7.03 years.
wheel rotating about a fixed axis has an angular position given by , where q = 3 - 2t^3 tis measured in radians and t in seconds
What is magnetic flux through the desk surface
Assume that Young's Modulus for bone is 1.50 1010 N/m2 and that the bone will fracture if more than 1.50 108 N/m2 is exerted. What is the maximum force that can be exerted on the femur bone
A 6000 ohm resistor is joined in series with a 70 uF capacitor. what is the capacitive time constant of this combonation
A train has a speed of v = 66.5 km/h. If the acceleration experienced by the passengers is to be less than 0.35 g, find the smallest radius of curvature R acceptable for the track
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