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A 208 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? (The specific heat for copper is 386 J/kg?K, the heat of fusion for copper is 205 kJ/kg, and its melting point is 1357 K.)
When a high-power laser is used in the Earth's atmosphere, At this maximum intensity, what power can be delivered in a cylindrical beam of diameter 6.56 mm
a car moving at 80 km/hr is brought to a stop in 5 seconds. How far did the car travel while stopping
A 10.0-uF capacitor, a 40.0-uF capacitor, and a 100.0-uF capacitor are connected in parallel across a 12.0v battery. what is the equivalent capacitance of the combination
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. Estimate the temperature increase of the beef due to this procedure
A 1.2 kg ball drops vertically onto a floor, hitting with a speed of 20 m s-1. It rebounds with a speed of 10 m s-1. What impulse acts on the ball during the contact
A cannonball is fired from a canon at an angle of 45 degrees to the horizontal.The cannonball's initial velocity is 40 m/s. How far will the cannonball go before it hits the ground
The equation of a transverse wave traveling along a very long string is y = 5.0 sin (0.055 ?x + 6.0 ?t), where x and y are expressed in centimeters and t is in seconds. Determine the amplitude of propagation of the wave.
What is the stress and strain in a 2 meter high, .025 m diameter brick column that supports a mass of 100000 kg? What is the factor of safety in the brick column
A turtle ambles leisurely-as turtles tend to do-when it moves from a location with position vector r1,x = 1.49 m and r1,y = -2.77 m in a lettuce garden to another location, find the magnitude of the turtle\'s average velocity
A 20.0%u03BCF capacitor is charged by a 160.0-VV power supply, then disconnected from the power, Calculate the oscillation frequency of the circuit
How many homes could be heated with the waste heat
Find the final velocities of (a) the 2.70-kg ball and of (b) the 7.10-kg ball if the collision is elastic. (c) Find the magnitude and direction of the final velocity of the two balls if the collision is completely inelastic.
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