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A 56.0 g sample of a conducting material is all that is available. The resistivity of the material is measured to be 1.22×10-7 ?m and the density is 6.35 g/cm3. The material is to be shaped into a solid cylindrical wire that has a total resistance of 1.75 ?. What length is required? Ans= 1.125×101 m What will be the diameter of the wire?
An 150kg man climbs up a 1m high flight of stairs, What is the increase in the gravitational potential energy of the man-earth system
A child sits on the edge of a spinning merry-go-round that has a radius of 2.9 m. What is the child's acceleration
A woman can read the large print in a newspaper only when it is at a distance of 66 cm or more from her eyes. What should be the refractive power (in diopters) of her glasses
A string is 80.0 cm long and has a mass per unit length of 5.51 × 10-4 kg/m. The tension in the string is 200 N. In the fundamental mode, at what frequency does the string vibrate? Answer A) 376 Hz B) 450 Hz C) 598 Hz D) 702 Hz E) 964 Hz
What is the velocity of each ball. while both pipes vibrate at their fundamental frequencies, a beat frequency of 15 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 343 m/s.
how far is this point horizontally from the end of the ramp. A skateboarder shoots off a ramp with a velocity of 6.2 m/s, directed at an angle of 61° above horizontal. The end of the ramp is 1.5 m above the ground.
A reporter in the press box looks at an angle of 10.0 below the horizontal to see second base, find the horizontal distance from the press box to second base
Your grandfather clock's pendulum has a length of 0.9939 m, how should you adjust the length of the pendulum
person 1.6 m tall stands 5.2 m from a reflecting globe in a garden. How large is the person's image
The wave function for a wave on a taut string is given by y(x,t)=(0.350m) sin (10pi(t)-3pi(x)+pi/4), What is the energy contained in each cycle
An 18 g rifle bullet travelling 180m/s buries itself in a 3.6kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Verify the horizontal component of the pendulum's displacement.
q1. a man pushes the lawn mower on a level lawn with a force of 240 n. if 40 percent of this force is directed downward
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