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While taking photographs in Death Valley on a day when the temperature is 53.0°C, Bill Hiker finds that a certain voltage applied to an iron wire produces a current of 1.000 A. Bill then travels to Antarctica and applies the same voltage to the same wire. What current does he register there if the temperature is-88.0°C? Suppose that no change occurs in the wire's shape and size.
A concave mirror forms a real image twice as large as the object. The object is then moved such that the new real image produced is three times the size of the object. If the image was moved 62.5 cm from its initial position, how far was the objec..
A 2.6-kg block is hanging stationary from the end of a vertical spring that is attached to the ceiling. What is the elastic potential energy of the system
When red light in a vacuum is incident at the Brewster angle on a certain type of glass, the angle of refraction is 39.0°. What is the index of refraction of the glass
A helicopter, starting from rest,accelerates straight up from the roof of a hospital. The liftingforce does work in raising the helicopter. An 810-kg helicopterrises from rest to a speed of 7.0 m/s in a time of 3.5s. Duringthis time it climbs to a..
two 10 cm-diameter charged disks face each other 29cm apart. the left disk is charged to - 50 nc and the right disk is
1 the ladder is 3.8 m long and the person is standing 1.1 m up the lenght of the ladder. the ladder makes an angle if
A ball is thrown directly upward with an initial velocity of 10 m/s. how long is the ball in the air
A u-tube with a cross-sectional area of 1.00 cm^2 is open to the atmosphere at both ends. WAter is poured into the tube until the water rises part way along the straight sides, What is the density of the oil
A rocket takes off vertically from the launchpad with no initial velocity but a constant upward acceleration of 2.25 m/s2. What is the maximum height the rocket will reach above the launchpad
A meteor streaking through the night sky is located with radar, its has moved to point B, Find the x component of its average velocity between A and B
a supersonic wind tunnel is designed for m 3 at the test section with a throat 0.12m in area. the supply pressure and
The 20-cm-long wrench in the figure swings on its hook with a period of 0.80s, What is the moment of inertia about the hook
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