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At a certain location, the Earth has a magnetic ?eld of 8.3 × 10-5 T pointing in the northward direction at 44? below the horizontal . A 9.8 m-long straight wire carries a(n) 21 A current. If the current is directed horizontally toward the east, what is the magnitude of the magnetic force on the wire? Answer in units of N?
A proton is passing the origin. The magnetic field at the (x,y,z) position ( 1mm , 0 mm, 0 mm)is 1.0×10?13?^T. what is the direction of the proton
a 19.2 kg sled is being pulled across a horizontal surface at a constant velocity. determine the coefficient of kinetic friction
A ship sets out to sail to a point 148 km due north. An unexpected storm blows the ship to a point 148 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive angl..
A jet lands at 14.8 m/s, applying the brakes 2.19 s after landing. Find the acceleration needed to stop the jet within 5.89 102 m
question1an airplane is flying with a velocity of 82.0 at an angle of 18.0 above horizontal. while the plane is a
A 0.5 kg cart is pushed by a force of 6.2 N for a total distance of 3.2 m. what would the velocity of the cart be when the force stops
The concept of thermionic emission is the basis of modern X-ray tubes, which are the workhorse of a medical X-ray image. In this process a filament (a piece of metal in a vacuum) is heated by the application of electrical current
An insulating sphere has a total excess charge Q distributed uniformly throughout the shere. Use Gauss's Law to calculate the electric field inside the sphere at a distance r
As a 5-kg block travels around a 0.6-m radius circle it has an angular speed of 14 rad/s. find The magnitude of its angular momentum around the origin
What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.5V when the starter motor draws 77A
A 1.0 kg stone is being whirles at constant speed of 12 m/s in a circle, held on a frictionless surface by a steel wire which is horizontal. The wire is 4.0 m long and its radius is 1.0 mm. Find out the strain in the wire.
Suppose that a comet that was seen in 627 A.D. by Chinese astronomers was spotted again in year 1988. determine the semimajor axis of the comet's orbit
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