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Recent questions tagged t4

Why do comets have tail ?

asked Nov 10, 2017 by priyanka.c

1 answer

What is the range of frequency that is audible to a human ear ?

asked Nov 10, 2017 by priyanka.c

1 answer

Which of the following quantities constitute to sound?

asked Nov 10, 2017 by priyanka.c

1 answer

What is the instrument used to measure the vibrations caused by an earthquake called ?

asked Nov 10, 2017 by priyanka.c

1 answer

Why does lightning strikes to trees more often?

asked Nov 10, 2017 by priyanka.c

1 answer

What is the friction experienced when you move a furniture, sliding it across the floor?

asked Nov 10, 2017 by priyanka.c

1 answer

In the process of electroplating, the object to be plated is connected to the _______ o the power supply.

asked Nov 10, 2017 by priyanka.c

1 answer

Cations are _______.

asked Nov 10, 2017 by priyanka.c

1 answer

Knowing the fact that earth is round shaped and that we are living on the crust, how is it possible for all of us to balance irrespective of where we live on earth ?

asked Nov 10, 2017 by priyanka.c

1 answer

What is the pressure exerted by a fluid at equilibrium, due to gravity called ?

asked Nov 10, 2017 by priyanka.c

1 answer

Which of the following are also types of forces ?

asked Nov 10, 2017 by priyanka.c

1 answer

Why does the sky appear blue during noon?

asked Nov 7, 2017 by priyanka.c

1 answer

Change in direction of light upon striking a surface is called as ________.

asked Nov 7, 2017 by priyanka.c

1 answer

Why do lights in the lighthouse rotate?

asked Nov 7, 2017 by priyanka.c

1 answer

What does a current carrying conductor experience when in a magnetic field?

asked Nov 7, 2017 by priyanka.c

1 answer

The accumulation of electric charges on the surface of an insulator is called as _______.

asked Nov 7, 2017 by priyanka.c

0 answers

The accumulation of electric charges on the surface of an insulator is called as ______.

asked Nov 7, 2017 by priyanka.c

1 answer

What is the protruding end of a AA cell represent?

asked Nov 7, 2017 by priyanka.c

1 answer

Cyclones are characterized by ________.

asked Nov 7, 2017 by priyanka.c

1 answer

What is the instrument that is used to measure the humidity of a place?

asked Nov 6, 2017 by priyanka.c

1 answer

What is the composition of gases in the atmosphere?

asked Nov 6, 2017 by priyanka.c

1 answer

Which of the following is a vector quantity?

asked Nov 6, 2017 by priyanka.c

1 answer

Objects moving in a straight line with varying speed is said to be in _____.

asked Nov 6, 2017 by priyanka.c

1 answer

The distance covered by a vehicle can be measured by ________ meter.

asked Nov 6, 2017 by priyanka.c

1 answer

The occurrence of wind, rain is ________ on the gradient of uneven heating on various regions.

asked Nov 6, 2017 by priyanka.c

1 answer

There are two jars in which one is filled with hot air and the other one with cold air. Now the jar with cold air is inverted and placed right on top of the jar with hot air. What will happen immediately?

asked Nov 6, 2017 by priyanka.c

1 answer

Which of the following are good conductors of heat?

asked Nov 6, 2017 by priyanka.c

1 answer

The distance between two consecutive crests is

asked Oct 29, 2017 by priyanka.c

1 answer

Sound waves travel faster on a rainy day than on a dry day because

asked Oct 29, 2017 by priyanka.c

1 answer

Mechanical waves transfer

asked Oct 29, 2017 by priyanka.c

1 answer

Air friction ________ the velocity of the satellite.

asked Oct 29, 2017 by priyanka.c

1 answer

Moon travelers tie heavy weight at their back before landing on the moon because

asked Oct 29, 2017 by priyanka.c

1 answer

Read the passage below and answer the following question <br><br> Take an empty plastic bottle. Close the mouth of the bottle with an airtight stopper. Put it in a bucket filled with water. We can see that the bottle floats.<br><br> Push the bottle into the water. We can feel an upward push. If we try to push it further down, it will be difficult to push it deeper and deeper. Now release the bottle. It bounces back to the surface.The force due to the gravitational attraction of the earth acts on the bottle in the downward direction. So the bottle is pulled downwards. But the water exerts an upward force on the bottle. Thus the bottle is pushed upwards. Also the weight of an object is the force due to gravitational attraction of the earth. When the bottle is immersed, the upward force exerted by the bottle by the water on the bottle is greater than its weight. Therefore it rises up when released.<br><br> To keep the bottle completely immersed the upward force on the bottle due to water should be balanced. This can be achieved by an externally applied force acting downwards. This force must be at least equal to the difference between the upward force and the weight of the bottle. <br><br> QUESTION : If the upward force exerted by the liquid is equal to the downward force due to the weight of the object then the object will

asked Oct 29, 2017 by priyanka.c

1 answer

Read the passage below and answer the following question <br><br> Take an empty plastic bottle. Close the mouth of the bottle with an airtight stopper. Put it in a bucket filled with water. We can see that the bottle floats.<br><br> Push the bottle into the water. We can feel an upward push. If we try to push it further down, it will be difficult to push it deeper and deeper. Now release the bottle. It bounces back to the surface.The force due to the gravitational attraction of the earth acts on the bottle in the downward direction. So the bottle is pulled downwards. But the water exerts an upward force on the bottle. Thus the bottle is pushed upwards. Also the weight of an object is the force due to gravitational attraction of the earth. When the bottle is immersed, the upward force exerted by the bottle by the water on the bottle is greater than its weight. Therefore it rises up when released. <br><br>To keep the bottle completely immersed the upward force on the bottle due to water should be balanced. This can be achieved by an externally applied force acting downwards. This force must be at least equal to the difference between the upward force and the weight of the bottle. <br><br> QUESTION : Which of the statement is not true? <br> 1. An object floats if its density is lesser than that of the liquid in which it is immersed <br> 2. The density of a substance is mass per unit area <br> 3. The weight of an object is due to the gravitational pull on it <br> 4. The downward force exerted by the liquid is called buoyancy

asked Oct 29, 2017 by priyanka.c

1 answer

A truck and a car are moving with the same kinetic energy are stopped by applying brakes. Which will stop at a smaller distance?

asked Oct 29, 2017 by priyanka.c

1 answer

What will happen to the kinetic energy of the particle, if its momentum is doubled?

asked Oct 29, 2017 by priyanka.c

1 answer

Sand is spread on tracks covered with snow. Why?

asked Oct 29, 2017 by priyanka.c

1 answer

A balloon has a mass of 10g in air. The air escapes from it at an uniform rate with a velocity of 5cm/s and the balloon shrinks completely in 2.5 s. What is the average force acting on the balloon.

asked Oct 29, 2017 by priyanka.c

0 answers

A thief jumps from the roof of a house with a box of weight W on his head. What will be the weight of the box as experienced by the thief during the jump?

asked Oct 29, 2017 by priyanka.c

1 answer

The following figure shows the time-acceleration graph for a particle in rectilinear motion. What will be the average acceleration in first twenty seconds?

asked Oct 29, 2017 by priyanka.c

1 answer

A particle moves along a circle of radius R. It starts from a point and moves in an anticlockwise direction. What will be the displacement made by it along the diameter?

asked Oct 29, 2017 by priyanka.c

1 answer

When will the average velocity be equal to the instantaneous velocity?

asked Oct 29, 2017 by priyanka.c

1 answer

Everything that has to do with solid earth is known as

asked Oct 26, 2017 by priyanka.c

1 answer

Guards cells help in

asked Oct 26, 2017 by priyanka.c

1 answer

Which among the following cause ozone hole and allows harmful UV rays to enter the earth's surface?

asked Oct 26, 2017 by priyanka.c

1 answer

Which of the following can cause a stroke?

asked Oct 26, 2017 by priyanka.c

2 answers

Carbon dioxide enters a leaf of a plant via

asked Oct 26, 2017 by priyanka.c

1 answer

When minerals are close to surface, method used for mining is

asked Oct 26, 2017 by priyanka.c

1 answer

Which test should you use if you suspect that a casualty has had a stroke?

asked Oct 26, 2017 by priyanka.c

1 answer

Which is the largest bird in the world?

asked Oct 26, 2017 by priyanka.c

1 answer

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