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A tungsten (W) target is bombarded by electrons accelerated through a potential of 60 kV. What is the cutoff wavelength of the X-rays emitted from the target?
A runner accelerates to a velocity of 5.36 m/s due west in 3 s. His average acceleration is 0.64 m/s2, also directed due west. What was his velocity when he began accelerating
In one frame of reference(say H), two events occur at the same point in space, but are separated by a time interval of 100 nanoseconds
Two slits spaced 0.410mm apart are placed a distance of 71.0cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen
a 27 kilogram block is being pulled up a ramp with a force of 250n. the ramp has an incline of 31 degrees above the
High-speed stroboscopic photographs show that the head of a 170-g golf club is traveling at 47 m/s just before it strikes a 46-g golf ball at rest on a tee, Find the speed of the golf ball just after impact
A coil of wire with 210 circular turns of radius 3.30 cm is in a uniform magnetic field along the axis of the coil. The coil has R= 42.8 ohm. At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.155 A in th..
At t = 0, a stone is dropped from a cliff above a lake; 2.2 seconds later another stone is thrown downward from the same point with an initial speed of 48.0 m/s. Find the height of the cliff
Gas in a container is at a pressure of 1.1 atm and a volume of 6.0 m3. What is the work done on the gas if it expands at constant pressure to twice its initial volume
The driver of a car sets the cruise control and ties the steering wheel so that the car travels at a uniform speed of 15m/s in a circle with a diameter of 130m. What arc length does it travel in this time
We want to model the flow of water in a 15 cm diameter pipe at m/s. Our air blower produces 14 x 10-3 m3/s. What pipe diameter, in cm, should we use for the air
A 10 kg block of ice has a temperature of -10°C. The pressure is one atmosphere. The block absorbs 4.17 106 J of heat. What is the final temperature of the liquid water
A hoodlum throws a stone vertically downward with an initial speed of 12.3 m/s from the roof of a building, 24.0 m above the ground. How long does it take the stone to reach the ground
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