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(a) A vessel contains oil (density = 0.8 gm/cm3) over mercury (denisty = 13.6 gm/cm3). A homogeneous sphere floats with half of its volume immersed in mercury and the other half in oil. Calculate the density of the material of the sphere in gm/cm3.
(b) A boy has 60 kg weight. He wants to swim in a river with the help of a wooden log. If relative density of wood is 0.6. Calculate the minimum volume of wooden log. (density of river water is 1000 kg/m3)
questiona 1000-kg car moves at an utmost speed so that it does not skid off the 50-m radius level track. if coefficient
In Europe, a large circular walking track with a diameter of 0.900 km is marked in angular distances in radians. How many radians should he walk per day to maintain his daily routine
A proton moves at 7.50 X 10 ^7 m/s, perpendicular to a magnetic field. The field causes the proton to travel in a circular path of radius 0.800m.
A motorcycle and a police car are moving in the same direction, with the motorcycle in the lead. What frequency does the motorcyclist hear in this case
The ratio of circumference to diameter for all circles is pi. What is the ratio of force to mass for freely falling bodies? Why doesn't a heavy object accelerate more than a light object when both are freely falling?
The crank handle moves with a constant tangential speed of 1.20 m/s on its circular path. The rope holding the bucket unwinds without slipping on the barrel of the crank. Find the linear speed with which the bucket moves down the well.
Two forces on the object are = 4.3 at 80 below the +x-axis and = 4.3 at 34 above the -x-axis. Is there a third force on the object? Find the direction of the force
A ball is thrown upward from the ground with an initial speed of 15.2 m/s; at the same instant, After how long will the balls be at the same height
1.0 kg block is at rest on a table. a 20.0 gr bullet is fired vertically up from under the table.the bullet goes
When the string is 1.047 m long and the speed of the rock is 45.1 m/s, the string breaks. What is the breaking strength of the string.
An Atwood machine is made with masses M1 = 100 g, M2 = 120 g, and pulley mass of 100 g. What is the percent error in acceleration
The only force acting on a particle is conservative force . If the particle is at point A, What is the potential energy of the system with the particle at B
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