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What is the anomalous expansion of water, and how does it help aquatic life?

A book of mass 980 g is placed on a table. Calculate the force exerted on the book in gravitational metric system in kgf.0.98

Which type of basic force is responsible for making objects fall, with a constant acceleration near the surface of the Earth?

If the girl's team is winning who is appyling a greater force.?

Statement 1: For the same load or force acting through two different surfaces, more pressure is developed on the surface with a smaller area. Statement 2: Pressure is defined as force per unit area.

what is parabola

With the help of a diagram describe an experiment to Show that electric current effect a magnet

What is the current (I) in the circuit?

Chromium has a shiny appearance and it does not corrode. Then why only a thin coating of it is used instead of using it to make the complete material?

Q- Why is it difficult to walk in sand than on a wooden path? Pls help experts(using technical terms- pressure,force,area)

an=n/(n+1)! , then find {†extstyle\overset{50}{\underset{n=1}{∑ an

What is metacentre?

For an image formed by a plane mirror, the left part of the object appears on the right side in the image and vice versa. This is known as ___.

why is gravity not a contact force if we are all the time in the contact of earth.

Why is a mirror fixed on a microscope?

A planet moves around the sun. At a given point P, it is closest from the sun at a distance d1 and has a speed v1. At another point Q, when it is farthest from the sun at a distance d2, its speed will be

Time period of binary star system is given b

A pendulum clock becomes 5 sec fast each day at temperature at 15C and becomes 10 sec slower each day at temperature 30C The temperature at which clock gives correct tim

What is done to increase friction between the tyres and road?

What made the industrial revolution a big success?

, temperature Kelvin to degree Celsius formula

A hollow cylinder has a charge q coulomb within it.If o is the electric flux in units of voltmetre associatedwith the curved surface B, the flux linked with theplane surface A in units of voltmetre will be (charges symmetrically placed within it)

calculate the current that can be produced from 4-7 kilowatt solar energy at domestic circuit

If lightning strikes a building, it flows harmlessly through the lightning conductor. What property should the material of which the lightning conductor is made have, to make this possible?

A book is at rest on a table. It is exerting a force of 10 N on the table. The table will exert force of ________ on the book.

The total number of compressions and rarefactions produced per second in a sound wave is 1000. Then what is the frequency of sound wave? (Is it 500Hz or 1000Hz)

The frequency of vibration of string is given by f=p/2l(F/m)'1/2.Here p is number of segment in the string and l is the length. The dimension Formula for m Will be

When a load of 10 kg is suspended on a metallic wire, it's it's l increases by 2 mm. The force constant of the wire is3×10⁴ N/m2.5×10³ N/m5×10⁴ N/m7.5×10³N/m

In a closed vessel with rigid walls with 1degree celcius increase in temperature of a gas, its pressure increases by

a train have 100 wagons engine is pushing it from backward with force F .Find net acceleration nd normal force at 60 and 61 wagon frm engin

Why is tension in a string electromagnetic force?

While moving a pic is being screened , a boy introduced a glass slab of thickness 3cm & refractive index 1.5 b/w the projector & the screen . in order to have a clear pic on the screen , the screen shoud be moved through a distance of?? A. 1cm away B. 1cm nearer C. 2cm away D. 3cm away

Why is there a difference in the moon rotation time period , 27days -29 days?

Is mercury an electrolyte and why

the flux through curved surface of cylinder having charge q inside it is given as phi then what is the flux through one of the plane surface

in a resonance tube two successive positions of resonance are obtained at 15cm and 48cm.if the frequency of the fork is 500cps, the velocity of sound i

A wheel whose moment of inertia is 0.03kg m^2 , is accelerated from rest to 20 rad/s in 5 s.When the external torque is removed the wheel stops in 1 min.Find 1) the frictional torque 2)the external torque

SI unit of area is ____

nttwo same shape ring radius R placed at distance R from each other at same axis . . the charge on rings are Q1 and Q2 , find the value of moving a charge 'q' from one ring's center to 2nd ring center?n ntn

A fielder pulls his hands gradually with the moving ball while holding a catch. Why does he do this?

Give reasons for the following observation: The smell of hot sizzling food reaches you several metres away, but to get the smell from cold food you have to go close.

State the number of images of an object placed between two mirrors inclined at 90o to each other.

If two bodies are moving with the samr velocity then with respect to each other in which state are they? Rest Or Motion

Question 11A girl is pushing a box towards east direction. In which direction should her friend push the box so that it moves faster in the same direction?

At time t=0, a ball has velocity 0.5 m/s. Its velocity is decreasing at the rate of 0.5 m/s2. What is the time instant, at which the ball will be at rest?

The amount of water vapor present in the air is known as _________.

Suppose you accidently spill soapy water on a marble floor. Which of the following statements is correct?

Two identically charged small spheres carrying charge q and mass m are suspended by strings of equal length. At equilibrium, if angle between the strings becomes 90^°, then the electrostatic force between them will be?