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A hollow copper wire with an inner diameter of 1.1 mm and an outer diameter of 1.8 mm carries a current of 15 A. What is the current density in the wire?
A 24kg projectile is moving at 240m/s in the positive direction of the x axis when it explodes and divides into two fragments, What is the direction and speed of the other piece
Two blocks, each of mass m = 2.1 kg, are pushed along the horizontal surface of a table by a horizontal force P of magnitude 5.4 N, Find the frictional force acting on the upper block
A helium balloon lifts a basket and cargo of total weight 2080 N under standard conditions, What is the minimum volume of the balloon
The wingspan (tip-to-tip) of a Boeing 747 jetliner is 59 m. The plane is flying horizontally at a speed of 200 m/s. Find the emf induced between the wing tips
A 0.500 kg solid mass is totally submerged in water while suspended from a spring balance. Calculate the volume of the solid mass
Waves from a radio station have a wavelength of 308 m. They travel by two paths to a home receiver 77.0 km from the transmitter. What is the minimum distance from the mountain to the receiver
A 2.0cm tall object is located 18.0cm in front of a converging lens with a focal length of 10.0cm. Is it virtual or real
Consider the expansion of 60.0 moles of a monatomic ideal gas along processes 1 and 2 in the figure below. In process 1 the gas is heated at constant volume from an initial pressure of Pi = 95 kPa to a final pressure of Pf = 190 kPa. In process 2 ..
Suppose a heat engine takes in 420 J of energy from a hot reservoir and performs 30 J of work in each cycle.
A horizontal force of magnitude 36.4 N pushes a block of mass3.81 kg across a floor where the coefficient of kinetic friction is0.640. What is the increase in the kineticenergy of the block
Consider a region of space with volume 80 mm3. Suppose the energy stored in the electric field of that particular region of space is 35 J. What is the average electric field strength in this region?
Electrons with a speed of 1.6×10^6m/s pass through a double-slit apparatus. What speed must neutrons have to produce interference fringes with a fringe spacing of 1.6mm
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