then
If c0 and c denote the sound velocity and the rms velocity of the molecules in a gas, then
14
Sep
If c0 and c denote the sound velocity and the rms velocity of the molecules in a gas, then If c0 and c denote the sound velocity and the rms velocity of the molecules in a gas then September 14, 2020 Category: Cengage NEET by C.P Singh , Chapter 17 - Sound Waves , Part [...]
Suppose, the acceleration due to gravity at the Earth’s surface is 10ms^−2 and at the surface of Mars it is 4.0ms^−2. A 60 kg passenger goes from the Earth to the Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of figure best represents the weight (net gravitational force) of the passenger as a function of time.
14
Sep
Suppose, the acceleration due to gravity at the Earth’s surface is 10ms^−2 and at the surface of Mars it is 4.0ms^−2. A 60 kg passenger goes from the Earth to the Mars in a spaceship moving with a constant velocity. Neglect all other objects in the sky. Which part of figure best represents the weight [...]
The weight of an object in the coal mine, sea level and at the top of the mountain are W1, W2 and W3 respectively, then
14
Sep
The weight of an object in the coal mine, sea level and at the top of the mountain are W1, W2 and W3 respectively, then sea level and at the top of the mountain are W1 The weight of an object in the coal mine then W2 and W3 respectively September 14, 2020 Category: Cengage [...]
Two planets have the same average density but their radii are R1 and R2. If acceleration due to gravity on these planets be g1 and g2 respectively, then
14
Sep
Two planets have the same average density but their radii are R1 and R2. If acceleration due to gravity on these planets be g1 and g2 respectively, then then Two planets have the same average density but their radii are R1 and R2. If acceleration due to gravity on these planets be g1 and g2 [...]
The weight of an empty balloon on a spring balance is W1. The weight becomes W2 when the balloon is filled with air. Let the weight of the air itself be w. Neglect the thickness of the balloon when it is filled with air. Also neglect the difference in the density of air insider and outside the balloon.
14
Sep
The weight of an empty balloon on a spring balance is W1. The weight becomes W2 when the balloon is filled with air. Let the weight of the air itself be w. Neglect the thickness of the balloon when it is filled with air. Also neglect the difference in the density of air insider and [...]
A 20 N metal block is suspended by a spring balance. A beaker containing some water is placed on a weighing machine which reads 40 N. The spring balance is now lowered so that the blocks gets immersed in the water. The spring balance now reads 16 N. The reading of the weighing machine will be
14
Sep
A 20 N metal block is suspended by a spring balance. A beaker containing some water is placed on a weighing machine which reads 40 N. The spring balance is now lowered so that the blocks gets immersed in the water. The spring balance now reads 16 N. The reading of the weighing machine will [...]
A wooden block, with a coin placed on its top, floats in water as shown in the fig. the distance l and h are shown there. After some time the coin falls into the water, then
14
Sep
A wooden block, with a coin placed on its top, floats in water as shown in the fig. the distance l and h are shown there. After some time the coin falls into the water, then A wooden block floats in water as shown in the fig. the distance l and h are shown there. [...]
Atomic mass number of an element is 232 and its atomic number is 90. The end product of this radiaoctive element is an isotope of lead (atomic mass 208 and atomic number 82.) The number of α-and β -particles emitted are.
14
Sep
Atomic mass number of an element is 232 and its atomic number is 90. The end product of this radiaoctive element is an isotope of lead (atomic mass 208 and atomic number 82.) The number of α-and β -particles emitted are. at time t1 and A2 at time t2 ( t2 >t1). If its mean [...]
The activity of a sample of a radioactive material is A, at time t1 and A2 at time t2 ( t2 >t1). If its mean life T, then
14
Sep
The activity of a sample of a radioactive material is A, at time t1 and A2 at time t2 ( t2 >t1). If its mean life T, then at time t1 and A2 at time t2 ( t2 >t1). If its mean life T The activity of a sample of a radioactive material is A [...]
The young’s experiment is performed with the lights of blue (lamda = 4360 A) and green colour ( lamda = 5460 A ). If the distance of the 4th fringe from the centre is x, then
13
Sep
The young’s experiment is performed with the lights of blue (lamda = 4360 A) and green colour ( lamda = 5460 A ). If the distance of the 4th fringe from the centre is x, then The young's experiment is performed with the lights of blue (lamda = 4360 A) and green colour ( lamda [...]