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MEDAL AND FAN A block is suspended from a spring. The spring is stretched 0.200 meter. If the spring constant is 200 newtons per meter, determine what is the weight of the block?
soap bubble (n = 1.40) having a wall thickness of 130 nm is floating in air. What is the wavelength of the visible light that is most strongly reflected
A curling stone with a mass of 7 kg moves across the ice at a speed of 1.35 m/s in the positive x direction. What is the speed and direction of stone 2 after the collision
During a baseball game, a batter approaches the plate. The pitcher hurtles the ball in the direction of the batter at a speed of 85 miles per hour. find the momentum of the system in the center of mass frame
If a toaster is plugged into a source of alternating voltage with an rms value of 134 V, an rms current of 5.75 Amp occurs in the heating element. Calculate the resistance of the toaster heating element
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
A 45.0 cm long organ pipe is filled with air at 14°C and is open at both ends. The velocity of sound in air at 0.000°C is 331 m/s. Another 45.0 cm long organ pipe is filled with air at 27.0°C and is open at both ends. What is the beat frequency betwe..
A 245 ball is tied to a string. It is pulled to an angle of 5.20 and released to swing as a pendulum. A student with a stopwatch finds that 10 oscillations take 10.5.
When traveling past an observer with a relative speed v, a rocket is measured to be 9.10m long. What is the proper length of the rocket
It is desired to build a heat pump that has an output temperature of 31 °C. Calculate the maximum coefficient of performance for the pump when the input source is ground water at 8.1 °C
Tasha with a nearsighted eye has near and far points of 16 cm and 25 cm, respectively. What is the power of the lens she uses
A mountain climber stands at the top of a 50m cliff hanging overa calm pool of water. What is the initial velocity of the second stone when it is thrown
Air traffic controllers use radar to keep track of the location of aircraft. The radar displays an aircraft's location in terms of the compass direction from the controller to the aircraft, Write down its position vector in rectangular coordinates
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