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A copper block is removed from a 300° C oven and dropped into 1.00 liter of water at 20° C. The water quickly reaches 25.5° C and stays at that temperature. What is the mass of the copper block?
In a freight yard a train is being made up. An empty freight car, coasting at 10 m/s, With what speed does the combined mass start to move
At a certain point P and at a given instant, the elctric field of the wave is give by E = (0.082 V/m)j. What is the Poynting vector at the point P at that instant
A set of crash tests consists of running a test car moving at a speed of 11.8 m/s (26.4 mi/hr) into a solid wall. Calculate the size of the average force which acts on the dummy during that time
Water in a rotating container of radius 50mm is 30 mm lower in the center than at the edge. Find the angular velocity of the container
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. find the tension in the tightrope
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower (see the figure). Calculate the speed of the planes
Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point?
An electron field of 8.50e5 V/m is desired between two parallel plates each of area 45cm^2 and seperated by 2.45 mm of air
A 0.150-kg frame, when suspended from a coil spring, stretches the spring 0.070m . A 0.200-kg lump of putty is dropped from rest onto the frame from a height of 30.0cm.Find the maximum distance the frame moves downward from its initial position.
given an electrical circuit which consists of resistor and voltage sources, determine the current flows (i1,i2,i3, and i4) use the following values for the voltage and resistor sources: V1=20 volts V2=12 volts V3=40 volts, R1= 18 ohms R2= 10 ohms R3=..
Two titanium spheres approach each other head-on with the same speed and collide elastically. What is the mass of the other sphere
A mass M = 95.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, what is the acceleration a of the van
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