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Two long parallel wires are 8.0 cm apart and carry currents in opposite directions as shown in the figure.
a) Find the magnitude and direction of the magnetic field at point p due to two 1.50mm segments of wire (not the entire wire) that are opposite each other and each 8.00cm from p. (the size of the segments is significantly small compared to the distance 8.0cm)
b) Find the magnitude and direction of the field at point p due to the two long wires (the entire wires).
A puma can jump to a height of 3.7 meters when leaving the ground at an angle of 45 degrees. With what speed must the animal leave the ground to reach that height
in the electron gun pictured a potential difference of 12.0 kv is found to bring electrons from rest at the cathode to
Three balls A, B, C, with masses of 2.8kg, 1.1kg, and 0.9kg, respectively, are connected by massless rods, as shown below. What are the coordinates of the center of mass of this system?
Take temperatures and efficiencies to be exact. A steam engine has a thermal efficiency of 15.0%. How much heat is lost to the surroundings in each cycle
Suppose manufactures increase in size of compact disks. By what factor will the moment of inertia increase
Four equal masses m=0.5kg are placed on the corners of a square ofnegligible mass, whose sides are 0.4m long. What is the kinetic energy of the system
A cork ball of mass m=5grams, carrying a charge of q=-2uC, is suspended from a string length l=1m above the horizontal, Calculate the angular frequency of this motion
A projectile is fired from ground level at t = 0, at an angleθ with respect to the horizontal. It has an initial speedvo. In this problem we are assuming that the ground islevel. Find the time tH it takes the projectile to reachits maximum height H.
A 1.1-pF parallel plate capacitor has a potential difference of 12.0 V across it. The plates are 4.5 mm apart, and the space between them contains air. obtain the charge on the capacitor
The system in the picture is in equilibrium. A concrete block of mass 225 kg hanfs from the end of the uniform strut whose mass is 45.0 kg. Find (a) the tension T in the cable and the (b) horizontal and (c) vertical force components on the strut f..
the tires of a car make 45 revolutions as the car reduces its speed uniformly from 100 kmh to 30 kmh. the tires have a
A 31.0 omegacap.gif resistor and an 16.0 omegacap.gif resistor are connected in series across a 15.0 V battery. What is the voltage out of the battery
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