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A metallic sphere floats in an immiscible mixture of water (ρw=10^3 kg/m^3) and a liquid (ρL=13.5×10^3 kg/m^3) such that its 2/3rd part is in water and 1/3 th part in the liquid. Find the density of metal.
17
Sep
A metallic sphere floats in an immiscible mixture of water (ρw=10^3 kg/m^3) and a liquid (ρL=13.5×10^3 kg/m^3) such that its 2/3rd part is in water and 1/3 th part in the liquid. Find the density of metal. A raft of wood of mass 120 kg floats in water. The weight that can be put on [...]
A car starts from rest and accelerates uniformly for 10 s to a velocity of 8 m/s. It then runs at a constant velocity and is finally brought to rest in 64 m with a constant retardation. The total distance covered by the car
17
Sep
A car starts from rest and accelerates uniformly for 10 s to a velocity of 8 m/s. It then runs at a constant velocity and is finally brought to rest in 64 m with a constant retardation. The total distance covered by the car Can a body have a. Zero instantaneous velocity and yet be [...]
A car travelling at 108 km/h has its speed reduced to 36 km/h after travelling a distance of 200 m. Find the retardation (assumed uniform) and time taken for this process.
17
Sep
A car travelling at 108 km/h has its speed reduced to 36 km/h after travelling a distance of 200 m. Find the retardation (assumed uniform) and time taken for this process. A car travelling at 108 km/h has its speed reduced to 36 km/h after travelling a distance of 200 m. Find the retardation (assumed [...]
A tank contains water on top of mercury as shown in figure. A cubical block of side 10 cm is in equilibrium inside the tank. The depth of the block inside mercury is (RD of the material of block =8.56, RD of mercury =13.6)
17
Sep
A tank contains water on top of mercury as shown in figure. A cubical block of side 10 cm is in equilibrium inside the tank. The depth of the block inside mercury is (RD of the material of block =8.56, RD of mercury =13.6) A tank contains water on top of mercury as shown in [...]
A body moves in the southern direction for 10 s at the speed of 10 m/s. It then stats moving in the eastern direction at the speed of 20 m/s for 10 s. The magnitude of the average velocity is
17
Sep
A body moves in the southern direction for 10 s at the speed of 10 m/s. It then stats moving in the eastern direction at the speed of 20 m/s for 10 s. The magnitude of the average velocity is A body moves in the southern direction for 10 s at the speed of 10 [...]
A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block is released, it starts moving upwards, the acceleration of the block is: (g=10ms^-2
17
Sep
A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block is released, it starts moving upwards, the acceleration of the block is: (g=10ms^-2 A small block of wood of relative density 0.5 is submerged in water at a depth of 5m. When the block [...]
A body moves at a speed of 100 m/s for 10 s and then moves at a speed of 200 m/s for 20 s along the same direction. The average speed is
17
Sep
A body moves at a speed of 100 m/s for 10 s and then moves at a speed of 200 m/s for 20 s along the same direction. The average speed is A body moves at a speed of 100 m/s for 10 s and then moves at a speed of 200 m/s for 20 [...]
A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is
17
Sep
A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the man is A boat having a length of 3 m and breadth 2 m is floating on a lake. The boat sinks [...]
A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l, it can lift a total weight of
17
Sep
A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l, it can lift a total weight of A balloon has volume 1000 m^3. It is filled with hydrogen (rho = 0.09 g/l). If the density of air is 1.29 g/l it can [...]
Can a body have a. Zero instantaneous velocity and yet be accelerating? b. Zero average speed but non-zero average velocity? c. Negative acceleration and yet be speeding up?
17
Sep
Can a body have a. Zero instantaneous velocity and yet be accelerating? b. Zero average speed but non-zero average velocity? c. Negative acceleration and yet be speeding up? Can a body have a. Zero instantaneous velocity and yet be accelerating? b. Zero average speed but non-zero average velocity? c. Negative acceleration and yet be speeding [...]