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A man at an organ concert can both hear a 30 Hertz sound wave and feel it as vibrations in the bench on which she is sitting. Evaluate what is the period?
An inclined plane of angle 20 has a spring of force constant k = 500 N/m fastened firmly is parallel to the surface. A block of mass = 2.50 kg is placed on the plane at a distance d = 0.300 m from the spring.
One end of a 30 cm long aluminum rod with diameter 2 cm is kept at 460*C while the other end is held in water at 25*C
A bicyclist of mass 75 kg ( including the bicycle) can coast down a 4.0 degree hill at a constant speed of 10 km/h. Pumping hard,the cyclist can descend the hill at a speed of 30 km/h.
A fish swimming in a horizontal plane has a velocity vi = (3.3i + 1.6j) m/s at a point in the ocean where the position relitive to a certian rock is ri = (10.5i - 3.9j) m. After the fish swims with a constant acceleration for 20.6 s, it's velocity..
Describe what happens to the energy of the two waves when they interfere destructively? Did the energy vanish
A car of mass m moving at speed v1 collides and couples with the back of a truck of mass 2 m moving initially in the similar direction as the car at a lower speed v2.
Two charges q1 = 7 µC, q2 = -33 µC, are L = 14 cm apart. A third charge is to be placed on the line between the two charges. How far from q1 should the third charge be placed so that the net electric force on the third charge is minimized?
Light in a transparent material (index of refraction 1.333) strikes the boundary with another transparent material (n = 1.010). What is the critical angle for total internal reflection
An asteroid is in a nearly circular orbit of radius 5.219 AU about the Sun. Determine the period of this asteroid
A 20.0-kg box rests on a horizontal surface. The coefficient of static and kinetic friction between the box and the surface are 0.30 and 0.10 respectively. obtain the friction force between the box and the surface
an engine performs a total of 15000 j of work in one minute: what is its power output in kilowatts and in horsepower
a capacitor is consists of two short sections of parallel wires in air. one wire is found to be of the voltage of 48 v
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