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A 1.70mcylindrical rod of diameter 0.550cmis connected to a power supply that maintains a constant potential difference of 13.0Vacross its ends, while an ammeter measures the current through it. You observe that at room temperature (20.0C) the ammeter reads 18.8A, while at 92.0Cit reads 17.3A. You can ignore any thermal expansion of the rod.A) Find the resistivity and for the material of the rod at 20 C. (Answer in Omega*m)B) Find the temperature coefficient of resistivity at 20 Cfor the material of the rod. (Answer in Degrees Celcius^-1)
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of 2.00 m above the floor with a speed of 7.20 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s Find the work done on the ball by air ..
Find out the maximum altitude reached by the rocket.
A cannonball is fired from a canon at an angle of 30 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. What is the greatest height the cannonball will attain
A train moving with constant velocity travels 180 meters north in 14 seconds and an undetermined distance to the west. compute the direction of the train's motion relative to north
A cardinal (Richmondena cardinalis) of mass 4×10-2 kg and a baseball of mass 0.143 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude p_c of momentum to the magnitude p_b of the baseball's momentum.
The plates of a 7.4-µF capacitor have net charges of +0.83 µC and -0.83 µC respectively. Which plate is at the higher potential
Bats are capable of navigating using the earth's field-a plus for an animal that may fly great distances from its roost at night. What is the proper orientation of the coil
A coin placed on a turntable rotating at 34.1 rev/min will stay there if its center is placed no further than 10.0 cm from the axis of rotation, What is the coefficient of friction between the coin and turntable
Space probes communicate with controllers on Earth using radio waves. How fast is the probe traveling and is it traveling towards or away from Earth
Vector A has a magnitude of 9.10 units and makes an angle of 54.0° with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods find the following.
Electric Field Mapping? A) In an experiment you will have carbon paper with silver electrodes painted on them. The paper acts like an insulator and the electrodes act like conductors. What should the field be inside the conductors? What about the pot..
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