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If the length of a wire conductor were to double, how would the resistance change? Why is resistivity call a material property?
The charging circuit for the flash system of a camera uses a 120 µF capacitor that is charged from a 260V power supply. What is the most resistance that can be in series with the capacitor
A thin metallic spherical shell of radius 0.377 m has a total charge of 5.03 × 10-6 C placed on it, What is the electric field at a distance of 0.785 m from the center of the spherical shell
A 0.2 kg hoop (I=0.06 kg-m 2) rolls down the street without slipping by an angular velocity of 15 rad/s. It then hits a puddle of water in the road (treat the water-disk surface contact as a μ = 0.25). Decide how far it rolls until it stops.
A 90° inverted cone contains water as shown. The volume of the water in the cone is given by V = (p/3) h3. The original depth of the water is 10 cm. A block with a volume of 200 cm3 and a specific gravity of 0.6 is floated in the water. Find the c..
in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.
A diver dives from a 13.0 m high board and takes off at6.5m/s. If his initial velocity is horizontal, at what angle will the diver hit the water
A hydrogen atom consists of a proton and an electron. if the orbital radius of the electron increases then the potential energy of the electron increases... why is this?
An aluminum wire carrying a current of 6.0 A has a cross-sectional area of 4.0 ? 10-6 m2. Find the drift speed of the electrons in the wire
A mercury thermometer is constructed. The capillary tube has a diameter of 0.0057 centimeter, and the bulb has a diameter of 0.13 centimeter. obtain the change in height of mercury column for a temperature change of 48C
An uncharged capacitor and a resistor are connected in series to asource of emf. If emf = 6.00 V, C = 22.0 µF,and R = 100 , find the following. the time constant of the circuit
The plane of a 5.60cm by 8.40cm rectangular loop of wire is parallel to a 0.220T magnetic field, and the loop carries a current of 6.45A . What torque acts on the loop?
A two-stage rocket is launched at an initial angle of 83 degrees from the horizontal, and for 15.4 seconds,its engine provides a uniform acceleration in its lauch direction of 25m/s^2. Find the maximum height of the rocket
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