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A fuse in an electric circuit is a wire that is designed to melt,and thereby open the circuit, if the current exceeds apredetermined value. Suppose that the material to be used in a fusemelts when the current density rises to 360 A/cm2. What diameter of cylindrical wire should be used to make a fuse thatwill limit the current to 0.55 A?
An empty freight car of mass 8000 kg rolls at 5 m/sec along a level track and collides with a loaded car of mass 16,000 kg, standing at rest with its brakes released. If the cars couple together, find their speed after the collision. Also, find the d..
A machine part rotates at an angular speed of 0.40 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.76 rad/s2
consider a .10kg block being pushed horizontally along a tablewith a force of .10N so that the block moves 2.0m at a constantspeed in the same direction it is pushed. How much work is done by the pushing force
A system receives 107 joules in the form of heat energy in a specified process and it produces work of 4*10^6 joules. The system velocity changes from 10km/s to 25 km/s and its elevation changes from 20m to 12m. The mass of the system is 50 kg. Deter..
A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long, what is the magnetic force on the section of wire
Find out the frequency of a sound wave moving through iron at 25 degrees Celsius with a wavelength of 0.601m.
If the power output of a 630 kHz radio station is 50.0 kW, how many photons per second are produced
If the velocity of a 3.0 kg body changes from v1= (3.0î , 5.0j) m/s to v2= (0î, 7.0j) m/s in a time interval of 2.0s. What is the impulse delivered to the body
A fire helicopter carries a 520-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, Determine the force exerted by air resistance on the bucket
Find out the recoil velocity that the raft. At what height above the cannon should the net be placed in order to catch the daredevil.
A rectangular trough, 1.9m long, 0.50m wide, and 0.30m deep, is completely full of water. at what speed does water emerge from the hole
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 81 km/h. What is the frequency of the cars horn
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