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A ball is projected vertical up from the top of a cliff of height h with a speed v 1 . Another ball is projected vertically up with a speed v2 from the bottom of the cliff, after a time t0 from the instant
18
Sep
A ball is projected vertical up from the top of a cliff of height h with a speed v 1 . Another ball is projected vertically up with a speed v2 from the bottom of the cliff, after a time t0 from the instant A ball is projected vertical up from the top of a [...]
The acceleration of a particle varies with time as shown in Fig 4.159 a. Find an expression for velocity in terms of t. Assume that b = 0 at t = 0. b. Calculate the displacement
18
Sep
The acceleration of a particle varies with time as shown in Fig 4.159 a. Find an expression for velocity in terms of t. Assume that b = 0 at t = 0. b. Calculate the displacement The acceleration of a particle varies with time as shown in Fig 4.159 a. Find an expression for velocity [...]
At the instant, the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.20 m/s^2. At the same instant, a truck travelling with a constant speed
18
Sep
At the instant, the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.20 m/s^2. At the same instant, a truck travelling with a constant speed a car that has been waiting at an intersection starts ahead with a constant acceleration of 3.20 m/s^2. [...]
The density of ice is x g/c^3 and that of water is y g/c^3 when m gram of ice melts, then the change in volume is
18
Sep
The density of ice is x g/c^3 and that of water is y g/c^3 when m gram of ice melts, then the change in volume is The density of ice is x g/c^3 and that of water is y g/c^3 when m gram of ice melts then the change in volume is September 18, 2020 [...]
A runner jogs along a straight road ( in the +x direction) for 30 min, travelling a distace of 6 km. She then turns around and walks back towards her starting point for 20 min, travelling 2 km during
18
Sep
A runner jogs along a straight road ( in the +x direction) for 30 min, travelling a distace of 6 km. She then turns around and walks back towards her starting point for 20 min, travelling 2 km during A runner jogs along a straight road ( in the +x direction) for 30 min travelling [...]
A woman starts from her home at 9.00 a,m,. walks with a speed of 5 km/h on straight road up to her office 2.5 km away, stays at the office up to 5.00 p.m, and returns home by an auto with speed
18
Sep
A woman starts from her home at 9.00 a,m,. walks with a speed of 5 km/h on straight road up to her office 2.5 km away, stays at the office up to 5.00 p.m, and returns home by an auto with speed . walks with a speed of 5 km/h on straight road up to [...]
A tank full of water has a small hole at its bottom. Let t1 be the time taken to empty the first half of the tank and t2 be the time needed to empty the rest half of the tank, then
18
Sep
A tank full of water has a small hole at its bottom. Let t1 be the time taken to empty the first half of the tank and t2 be the time needed to empty the rest half of the tank, then A tank full of water has a small hole at its bottom. Let t1 [...]
Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height in Q capillary. The ratio of their diameters is
18
Sep
Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height in Q capillary. The ratio of their diameters is Two capillary tubes P and Q are dipped in water. The height of water level in capillary P is 2/3 to the height [...]
Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75×10^−4 newton force due to the weight of the liquid. If the surface tension of water is 6×10^-2` N/m the inner circumference of the capillary must be:
18
Sep
Water rises in a capillary tube to a certain height such that the upward force due to surface tension is balanced by 75×10^−4 newton force due to the weight of the liquid. If the surface tension of water is 6×10^-2` N/m the inner circumference of the capillary must be: Which graph represents the variation of [...]
Two parallel glass plates are dipped partly in a liquid of density d keeping them vertical. If the distance between the plates is ′x Surface tension for liquid is T & angle of contact is θ then rise of liquid between the plates due to capillary will be
18
Sep
Two parallel glass plates are dipped partly in a liquid of density d keeping them vertical. If the distance between the plates is ′x Surface tension for liquid is T & angle of contact is θ then rise of liquid between the plates due to capillary will be Which graph represents the variation of surface [...]