A body of mass. 5 kg starts motion form the origin with an initial velocity $Error converting from MathML to accessible text.$ If a constant force $Error converting from MathML to accessible text.$ acts an the body, than the time in which the Y-component of the velocity becomes zero is……

Maths-

$f left parenthesis x right parenthesis equals open curly brackets table attributes columnalign left left columnspacing 1em end attributes row cell left square bracket x right square bracket text if end text minus 3 less than x less or equal than negative 1 end cell row cell vertical line x vertical line text if end text minus 1 less than x less than 1 end cell row cell vertical line left square bracket negative x right square bracket vertical line text if end text 1 less or equal than x less or equal than 3 end cell end table text then end text left curly bracket x colon f left parenthesis x right parenthesis greater or equal than 0 right curly bracket equals close$

Maths-General

Same forces act an two bodies of different mass 2 kg and 5 kg initially at rest. The ratio of times. required to acquire same final velocity is…..

An object of mass 3 kg is moving with a velocity of 5 m/s along a stright path. If a force of 12 N is applied for 3 sec on the object in a perpendicular to its direction of motion. The magnitude of velocity of the particle at the end of 3 sec is……..m/s.

A rope which can withstand a maximum tension of 400 N hangs from a tree. If a monkey of mass 30 kg climbs on the rope in which of the following cases-will the rope break? (take g=10 ms² and neglect the mass of rope)

Maths-

Let $g left parenthesis x right parenthesis equals 1 plus x minus left square bracket x right square bracket text and end text f left parenthesis x right parenthesis equals open curly brackets table attributes columnalign left left columnspacing 1em end attributes row cell negative 1 comma text if end text x less than 0 end cell row cell 0 text if end text x equals 0 text then end text fraction numerator f left parenthesis g left parenthesis 2009 right parenthesis right parenthesis over denominator g left parenthesis f left parenthesis 2009 right parenthesis right parenthesis end fraction equals end cell row cell 1 comma text if end text x greater than 0 end cell end table close$

Maths-General

Physics-

A thin liquid film formed between a u-shaped wire and a light slider supports a weight of $1.5 cross times 10 to the power of negative 2 end exponent text end text N$ (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film is.

Surface tension is the phenomenon of a liquid's surface when it comes into contact with another phase. The least amount of surface area is typically acquired by liquids. As a result, the liquid's surface exhibits an elastic sheet-like behavior.
¶The forces of attraction between the particles of liquid and the forces of attraction of solids, liquids, or gases in contact with it affect surface tension. The energy or work requires to remove the molecules of the surface layer in a unit area is roughly equivalent to the energy responsible for the phenomenon of surface tension.

A thin liquid film formed between a u-shaped wire and a light slider supports a weight of $1.5 cross times 10 to the power of negative 2 end exponent text end text N$ (see figure). The length of the slider is 30 cm and its weight negligible. The surface tension of the liquid film is.

Physics-General

Three masses 1 kg and 6 kg and 3 kg are connected to each other with threads and are placed on a table as shown in figure. The acceleration with which the system is moving is-ms²(g=10ms²)

physics-

The point of maximum and minimum attraction in the curve between potential energy (U) and distance (r) of a diatomic molecules are respectively.

Physics-

The diagram shows the change x in the length of a thin uniform wire caused by the application of stress F at two different temperature $T subscript 1 end subscript & T subscript 1 end subscript$ The variation

Physics-General

physics-

Which are of the following is the young's modulus (in $open N divided by m squared close parentheses$ for the wire having the stress strain curve in the figure.

If the surfaces shown in figure are frictionless, the ratio of T₁ and T₂ is……..

Three blocks of masers m₁,m_² and by massless strings as shown in figure, on a frictionless table. They are Pulled with the force T₃=40 N. If m₁=10 kg,m₂=6 kg and m₃=4kg the tension T₂ will be=...N

Maths-

If $f colon R not stretchy rightwards arrow R text is defined by end text f left parenthesis x right parenthesis equals x minus left square bracket x right square bracket minus 1 half text fo end text x$ where $left square bracket x right square bracket$ is the greatest integer no exeeding $x comma text then end text open curly brackets x element of R colon f left parenthesis x right parenthesis equals 1 half close curly brackets equals$

Maths-General

physics-

The diagram shows stress w/s strain curve for the materials A and B. From the curves we infer that