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1) An aluminum wire has a length of 20m and adiameter of 0.0025in. It is connected to a 9.35V battery. The resistivity of aluminium is 2.65x10^-8(ohm(m))a).
a) calculate the resistance of the wire.
b) what is the current through the wire?
c) what is the power dissapated by the wire?
2) A sphere has a radius of 12.8cm, and a charge per unit volume given by 8r^3. (dV=4(pi)r^2 (dr))
a) Find the electric field as a function of r inside the sphere.
b) Find the electric field as a function of r outside the sphere.
A car of mass M = 1000kg traveling at 60.0km/hour enters a banked turn covered with ice. What is the radius (r) of the turn if theta = 20.0 degrees
You wish to boil 1.1 kg of water, which has a specific heat capacity of 4186 J/kg-K. The water is initially at room temperature (293 K). Water boils at 373 K. How much energy must be added to the water by heating it in order for it to start boiling
At the end of an amusement park ride, you want the gondola to stop without the acceleration exceeding 2 g%u2019s. what is the maximum allowed braking force
A child slides down a slide with the 29 degree incline, and at the bottom her speed is precisely half of what it would have been if the slide had been frictionless. Compute the coefficient of sliding between the child and the slide.
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
An eagle (mA = 4.3 kg) moving with speed vA = 7.8 m/s is on a collision course with a second eagle (mB = 5.6 kg) moving at vB = 10.2 m/s in a direction perpendicular to the first
You drop 470 g of solid ice at ?35°C into a bucket of water (1,200 g) at 45°C. Find the final temperature of the system
A gun shoots bullets that leave the muzzle with a speed of 205m/s. If a bullet is to hit a target 151m away at the level of the muzzle, the gun must be aimed at a point above target.
A Circuit has two identical capacitors with capacitance 4x10^-6 in parallel connected to two identical four ohm resistors in parallel. What is the initial charge on the capacitors
A circular loop of wire of radius 12.5 cm is placed in a magnetic field directed perpendicular to the plane of the loop, calculate the magnitude of the emf induced in the loop
Extimate the thickness of a glass at a bright fringe and the Brewster's angle for light traveling from air to glass.
what the torque increase or decrease as the angle increase. Calculate the magnitude of the torque.
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