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If the frequency of blue light is 6 x 10^14 cycles/second andits wavelength is 5 x 10^-7 m, find the speed of light by using dimensional analysis.
A typical GPS (Global Positioning System) satellite orbits at an altitude of 4.40 107 m. Find the orbital period of such a satellite
A man wants to swim across a river that flows N to S at 5 m/s.He can swim at a speed of 7m/s. how far south did he travel
a wire lying in the plane of the page carries a current directed toward the bottom of the page. What path will the electron follow
A 0.39 kg iron horseshoe that is initially at 745°C is dropped into a bucket containing 24 kg of water at 46°C. What is the final equilibrium temperature? Neglect any heat transfer to or from the surroundings.
During a 65-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 4.3-mA current in a nearby secondary coil. What is the change in the primary current
A car of mass 2200 kg collides with a truck of mass 4800 kg, and just after the collision the car and truck slide along, stuck together. The car's velocity just before the collision was m/s, and the truck's velocity just before the collision was..
A 9 kg mass slides to the right on a surface having a coefficient of friction 0.37 as shown in the figure. The mass has a speed of 5 m/s when contact is made with a spring (of con- stant 107 N/m)
A coiled telephone cord forms a spiral with 74.0 turns, Determine the self-inductance of one conductor in the unstretched cord
A 43-kg girl is bouncing on a trampoline. During a certain interval after leaving the surface of the trampoline, How high does she rise during this interval
400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater
A point mass of 1kg collides elastically with a stationary point mass of 5 kg. calculate total momentum of system and kinetic energy of centre of mass
Football players measure their acceleration by seeing how fast they can sprint 40 yards (37 ). what is the average power output for this sprint
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