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The copper wire in a typical residential building has a cross-sectional area of 3.31 x 10-6 m2. If it carries a current of 10.0 A, what is the drift speed of the electrons? Assume that each copper atom contributes one free electron to the current. The density of copper is 8.95 g/cm3, the molar mass is 63.5 g/mole, and 6.02 x 1023 atoms/mole.
A suction cup works by virtue of a vacuum that is created within the cup. When the cup is pressed against a flat surface, most of the air is forced out, what is the pressure inside the suction cup
what speed does boxcar have after 10 seconds.What is the object's displacement Dx.
a closed Gaussian surface in the shape of a cube of edge length 2.30 m. What is the net charge contained by the cube
How many centimeters thick would the concrete need to be so that 18.0 per cent of the neutrons are transmitted.
A 715 kg car moving at 28 m/s brakes to a stop. The brakes contain about 17 kg of iron that absorb the energy. What is the increase in temperature of the brakes
Electrons are accelerated through a voltage difference of 175 kV inside a high voltage accelerator tube. What is the final kinetic energy of the electrons?
Four particles with masses 9kg, 4kg, 9kg, and 3kg are associated by rigid rods of negligible mass as shown. Assume the system rotates in the yz plane about the x axis with an angular speed of 9 rad/s. Find out the moment of inertia of the system a..
an unusual spring has a restoring force of magnitude f 2.0 nm x 1.0 nm2 x2 where x is the stretch of the spring from
A 24kg chimpanzee hangs from the end of a horizontal, broken branch of length L0 = 1.4m , What is the shear modulus for this branch
a mass attached to a spring oscillates according to the equation xt 24sin16t 0.50 where x is in cm and t in seconds.
A hockey puck is hit on a frozen lake and starts moving with a speed of 12.1 m/s. Five seconds later, its speed is 5.50 m/s. How far does the puck travel during the 5.00 s interval
A 5.0-kg mass attached to a spring is displaced 8.0 cm from equilibrium position. What is the frequency of the oscillation
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