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A cube of metal has a mass of 0.569 kg and measures 3.09 cm on a side. Calculate the density and identify the metal.
A faulty model rocket moves in the xy-plane (the positive y-direction is vertically upward), Calculate the velocity vector as a function of time
A fluid has a density of 1040kg/m^3. If it rises to a height of 1.8cm in a 1.0mm diameter capillary tube, what is the surface tension of the liquid
A voltage of 20.0 V is applied across the two ends of a Tungsten wire with a temperature coefficient of resistivity of 4.50×10-3 1/K. determine the power dissipated by the wire
An object of mass 5kg is moving with an momentum of 50 kg m/s. What is the speed of the object? What is the magnitude of the momentum of the object
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 37 m/s. At what frequency does the driver of the car hear the siren
Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h. What is the total energy stored in an 8.0-V battery rated at 49.0 A h.
A 65kg, 1.70m tall person is standing in a room, Find the air temperature at which the heat transfer rate by radiation is just balanced by the rate of heat generation
You can turn the crank at a maximum rate of 3 turns per second, but hand crank is connected to the coil through a set of gears that makes the coil spin at a rate 6 times larger than the rate at which you turn the crank. What is the maximum emf you ca..
A bungee cord is stretched between two poles with a force of 434 N. What is the velocity of a wave on this bungee cord
Two pendula of equal length b and equal masses m connected by a spring of force constant k. Write the Lagrangian for the system, and use it to derive the equations of motion of the system
Both systems start from rest, and the direction of the force moves with the system and always points along the 4.00 m rod. What is the angular velocity of each system after 5.28 s.
An electron is accelerated by a constant electric field of magnitude 285 N/C. a. Find the acceleration of the electron (N) b. If the string can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the string breaks.
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