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The fluid pressure of atmosphere is measured in ___________. This is equivalent to _________ Pascal.

If the direction of current in the conductor and the magnetic field are the same, in which way will the conductor move?

Weight of an astronaut and his space suit on the Earth is $60kgf$ and $30kgf$ respectively. Their combined weight on the Moon will be:

Two scooters starting from rest accelerate uniformly at the same rate. Time taken by second scooter to travel is twice the time taken by the first scooter. Then the relation between the distance covered by the first scooter $\left(S_1\right)$ to that of the second scooter $\left(S_2\right)$ is

Michael Jordan has a vertical leap of 1.25 m, what is his takeoff speed and for how much time he will be in the air?
Take a = 10 m/s² downwards.

Draw a simple diagram showing a food chain.

A body is floating in the water. $1/3^{rd}$ part of the body is inside the water and $2/3^{rd}$ is in the air as shown in the diagram. Find out the density of the body.
${\rho }_w=\text{density of water}$
${\rho }_b=\text{density of body}$

Considering the motion of the object whose velocity-time graph is given in the diagram, calculate the total displacement till 16 seconds?

In v-t graph , why velocity *time=dislpacement , only possible in constant motion... Explain in detail with reasons....

The side of a cube is measured by a vernier calliper (10 divisions of a vernier scale coincide with 9 divisions of the main scale, where 1 division of the main scale is 1 mm). The main scale reads 10 mm and the first division of vernier scale coincides with the main scale. Mass of the cube is 2.736 g. Find the density of the cube inappropriate significant figures.

The speed of a car is 54 km/hr. Express the speed in m/s and calculate the distance covered by the car in 5 secs.

An object of mass $1kg$ was moving at a speed of $10m{s}^{-1}$. A constant force acts for $4s$ on the object and the speed of object becomes $2m{s}^{-1}$ in opposite direction after the application of force. The force acting on the object have:

Which electrical current alters its direction in regular intervals of time?

Goods which are used in the process of production of goods and service

The two places where magnetic needle becomes normal to earth surface are called___.

The diagram shows a coil wound around a soft iron bar XY. The polarity at the ends X and Y are

The physical quantity, which is the measure of inertia, is

To use a Spring-balance we have to ensure

Figure shows x-t graph of a particle. Find the time t such that the average velocity of the particle during the period O to t is zero.

A train starting from a railway station and moving with uniform acceleration, attains a speed of 40 km/h in 10 minutes. Its acceleration is :

Which one of the following elements is a non-metal?

The separation between two consecutive crests in a transverse wave is 100 m. If wave velocity is 20 m $s^{-1}$, find the frequency of wave.

A mug full of water appears light as long as it is under water in the bucket than when it is outside water. Why?

Name two units of time bigger than a second. How are they related to the second ?

Liquids generally have lower density as compared to solids but you must have observed that ice float on water find out why?

What is the initial velocity under free fall?

A combination of wood and iron, just floats on the water at room temperature. What will you observe when the water is heated?

Relative density of a substance is expressed by comparing the density of that substance with the density of :
(a) air (b) mercury
(c) water (d) iron.

Gravitational force on the surface of moon is only 1/6 as strong as gravitational force on earth what is the weight in newton of a 120 kg object on the moon and on the earth

If ${\alpha }_r$ and ${\alpha }_t$ represent radial and tangential accelerations, the motion of a particle will be uniformly circular if

Which of the following statements about an electromagnet is NOT true?

A car takes 4 hours to travel from Bangalore to Chennai whereas the flight takes only 30 minutes to travel from Bangalore to Chennai. If the distance from Bangalore to Chennai by road is 400 km and the air is 150 km, calculate the average speed and average velocity of the flight and car.

Answer in the given order (in $\frac{km}{hr}$ ):

Find the Average speed of flight, average velocity of flight, average speed of car, average velocity of car.

Two massive objects of masses 5 kg and 20 kg are separated by a distance of 25 m, then the distance at which no net gravitational force is felt due to these masses, is

A bus starts moving with an acceleration of $2m/s^2$. A cyclist 96m behind the bus starts simultaneously towards the bus at 20m/s. After what time will he be able to overtake the bus?

If a body of mass m is carried by a lift moving with an upward acceleration a,then the forces acting on a body are (i) the reaction R on the floor of a lift upwards (ii) the weight mg of the body acting vertically downwards . The equation of motion will be given by

A)R=mg-ma

B)R=mg+ma

C)R=ma-mg

D)R=mg*ma

Is the uniform circular motion accelerated ? Give reasons for your answer.

Light exhibits which of the following properties ?

Two identical batteries,each of emf $2V$ and internal resistance r=1 $\Omega$ by passing a current through it. The maximum power that can be developed across $R=1\Omega$ using these batteries is

State two ways to minimise the impact of global warming.

How does acceleration due to gravity change with the shape of earth?