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Nichrome wire of cross-sectional radius 0.788 mm is to be used in winding a heating coil. If the coil must carry a current of 9.75 A when a voltage of 3.00 102 V is applied across its ends, find the following.
(a) the required resistance of the coil
(b) the length of wire you must use to wind the coil
m
A sailboat is running along a straight course with the wind providing a constant force of 55 lb. The only other force acting on the boat is resistance as the boat moves through the water. The resisting force is numerically equal to five times the boa..
A submarine on the ocean surface receives a sonar echo indicating an underwater object. What is the object's depth
Suppose a car starts from rest and completes a straight line, 1/4 mile (402 meter) race in 12.3 seconds. Assume the acceleration to be constant.
A car takes 11 s to go from v = 0 to v = 75 m/s at approximately constant acceleration. If you wish to find the distance travelled using equation d = 1/2 at2, what value should you use for a.
Find the speed an alpha particle requires to come within 2.6 ? 10-14 m of a uranium nucleus
In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 21 m/s at an angle of 31 degrees above the horizontal
Find the potential on the axis of a charged ring carrying some charge density (lamda) uniformly distributed around it
A curve of radius 40 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely create the curve?
What is the percent change in momentum of a proton that accelerates from 0.42c to 0.91c?0
The diffraction pattern produced by the aperture is observed on a screen at a distance of 4 m from the aperture. The power density at the centre of diffraction pattern is measured to be 7 W/m2.
A toy spacecraft is launched directly upward. When toy reaches its highest point, a spring is released and the toy splits into two parts with masses of .c2 kg and .08 kg.
The flywheel of an engine has a moment of inertia 2.2 {rm kg} cdot {rm m} ^{2} about its rotation axis. What is its final kinetic energy.
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