Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions)
An ice cube of side 1 cm is floating at the interface of kerosene and water in a beaker of base area 10cm^2 . The level of kerosene is just covering the top surface of the ice cube. a. Find the depth of submergence in the kerosene and that in the water. b. Find the change in the total level of the liquid when the whole ice melts into water.
28
Aug
An ice cube of side 1 cm is floating at the interface of kerosene and water in a beaker of base area 10cm^2 . The level of kerosene is just covering the top surface of the ice cube. a. Find the depth of submergence in the kerosene and that in the water. b. Find the [...]
A river flows due south with a speed of 2.0 ms^-1. A man strees a motorboat across the river , his velocity relative to the water is 4 m s^-1 due east. The river is 800 m wide. (a) What is his velocity (magnitude and direction) relative to the earth ? (b) How much time is required to cross the river ? ( c) HOw far south of his starting points will he reach the opposite bank ?
28
Aug
A river flows due south with a speed of 2.0 ms^-1. A man strees a motorboat across the river , his velocity relative to the water is 4 m s^-1 due east. The river is 800 m wide. (a) What is his velocity (magnitude and direction) relative to the earth ? (b) How much time [...]
A man can swim at the rate of 5 km/h in still water. A river 1 km wide flows at the rate of 3 km/h^-1.
28
Aug
A man can swim at the rate of 5 km/h in still water. A river 1 km wide flows at the rate of 3 km/h^-1. A man can swim at the rate of 5 km//h in still water. A river 1 km wide flows at the rate of 3km h^(-1). August 28, 2020 Category: Uncategorised [...]
a cubical, wooden block has side a=30cm. it is floating in a rectangular tank partially filled with water and having base area A= 45cm x 60cm. calculate the work done to press the block slowely so that it is just immersed in water. (p block = 500kg m^-3 , p water = 1000kg m^-3)
28
Aug
a cubical, wooden block has side a=30cm. it is floating in a rectangular tank partially filled with water and having base area A= 45cm x 60cm. calculate the work done to press the block slowely so that it is just immersed in water. (p block = 500kg m^-3 , p water = 1000kg m^-3) a [...]
A man wishes to cross the river in a boat. If he crosses the river in minimum time, then he takes 10min with a drift of 120m. If he crosses the river taking shortest root he takes 12.5min. The velocity of boat with respect to water is?
28
Aug
A man wishes to cross the river in a boat. If he crosses the river in minimum time, then he takes 10min with a drift of 120m. If he crosses the river taking shortest root he takes 12.5min. The velocity of boat with respect to water is? A man wishes to cross the river in [...]
A truck is moving with a constant velocity of 54 km/h^-1. In which direction (angle with the direction of motion of truck) should a stone be projected up with a velocity of 20 m/s^-1, from the floor of the truck of the truck, so as to appear at right angles to the truck, for a person standing on earth ?
28
Aug
A truck is moving with a constant velocity of 54 km/h^-1. In which direction (angle with the direction of motion of truck) should a stone be projected up with a velocity of 20 m/s^-1, from the floor of the truck of the truck, so as to appear at right angles to the truck, for a [...]
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A truck is moving with a constant velocity of 54 km h^-1. In which direction (angle with the direction of motion of truck) should a stone be projected up with a velocity of 20 ms^-1 ,
for a person standing on earth ? ,
from the floor of the truck of the truck ,
so as to appear at right angles to the truck ,
A bird is flying due east with a velocity of 4 m s^-1. The starts to blow with a velocity of 3 ms^-1 due north. What is the magnitude of relative velocity of bird w.r.t. wind ? Find out its direction also.
28
Aug
A bird is flying due east with a velocity of 4 m s^-1. The starts to blow with a velocity of 3 ms^-1 due north. What is the magnitude of relative velocity of bird w.r.t. wind ? Find out its direction also. A block slips along an incline of a wedge. Due to the reaction [...]
A political party has to start its procession in an area where wind is blowing at a speed of 30 square root 2 kmh −1 and party flags on the cars are fluttering along north-east direction. If the procession starts with a speed of 40kmh −1 towards north, find the direction of flags on the cars.
28
Aug
A political party has to start its procession in an area where wind is blowing at a speed of 30 square root 2 kmh −1 and party flags on the cars are fluttering along north-east direction. If the procession starts with a speed of 40kmh −1 towards north, find the direction of flags on the [...]
A block slips along an incline of a wedge. Due to the reaction of the block on the wedge, it slips backwards. An observer on the wedge will se the block moving straight down the incline. Discuss how to find the absolute velocity of the block.
28
Aug
A block slips along an incline of a wedge. Due to the reaction of the block on the wedge, it slips backwards. An observer on the wedge will se the block moving straight down the incline. Discuss how to find the absolute velocity of the block. A block slips along an incline of a wedge. [...]
Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A.
28
Aug
Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A. Two objects A and B are moving along the directions as shown in Figure. Find the magnitude and direction of the relative velocity of B w.r.t. A. August [...]