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A light rod of length 1.8 m has two point masses of mass 2 kg attached at either end. The rod is pivoted about its centre and is attached to a spring which exerts a moment on the rod that is proportional to the angle the rod is displaced from the equilibrium position and which attempts to return the rod to the equilibrium position. The rod is displaced 0.08 rad from the equilibrium position and released from rest. If the spring constant is 3.7 Nm.rad-1 what is the period of the resulting motion?
What is the wavelength of the electromagnetic waves used for cell phone communications in the 900-MHz band?
an 8.5 m long wire of resistance 20.6 \(\Omega\) carries a current of 6.6, What is the magnitude of the electric field in the wire
A sinusoidal wave traveling in the positive x-direction has an amplitude of 15cm, a wavelength of 40cm, Write down the wave function for a left traveling wave with the same parameters
Jane plans to fly from Binghampton, New York, to Springfield, Massachusetts, about 280 km due east of Binghampton, What was the wind velocity
A baseball pitcher can throw a ball with a speed of 70m/s. He is in the back of a pickup truck that is driving away from you. He throws the ball in the direction, and it floats toward you at a lazy 10 m/s.
Vector A ? has magnitude 10.0m m and vector B ? has magnitude 18.0m m . The scalar product A ? ?B ? is 90.0m 2. What is the magnitude of the vector product
What are the velocities of the two people after the snowball is exchanged? Disregard friction between skate and the ice.
an airplane flying at a constant speed of 160 m/s pulls out of a dive in a circular arc. the 80 kg pilot presses down on his seat with a force of 3000 N, What is the radius of the arc
An "energy bar" contains 21g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5km/hr? Express your answer using two significant figures.
What's the quickest way to approach this problem? A car is traveling at 80 km/h along the highway. A second car is located 1 km behind, but traveling at 100 km/h. How long does it take for the second car to pass the first?
Determine how long it would take an astronaut to fall from a height of 2 meters on the Moon. Compare this time to the time it would take the astronaut to fall the same 2 meters on the Earth. Also, compare the time to the time it would take on the ..
An electron has an initial velocity of (15.0 j + 22.0 k) km/s and the constant acceleration of (3.00*10^12 m/s^22)i in a region in which uniform electric and magnetic fields are present. If B = (400 µT)i, find the electric field E.
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