Average speed is the total distance travelled by the body divided by the total time taken to cover this distance. i.e Average speed =Total distance travelled/Total time .....

Most living things have chromosomes, or units of genetic information, in their cells. The number and appearance of chromosomes vary among species. A karyotype is the number, size, and shape of chromosomes in the cell nuclei of  an .....

The work done to lift a mass  upto certain height against gravity is called work done against gravity. It can be calulated using formula W = .....

Density is defined as mass per unit volume. Density (d) = mass (m) / volume (v) Relative density is defined as density of a substance to density of water at 40c. Relative density (R.D) = density of substance / density of water at .....

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It is due to anomalous expansion or strange behavior of water. The expansion of water takes place as it is cooled from 4 degrees Celsius to zero degree Celsius. This behavior is unusual because most substances contract when they are cooled. But .....

शंकर, शंखधर, संघीयता, पंचामृत, मंजन, गीतगुंजन, कंटकारि, मुखमंडल, विचारमंथन, दंतबजान, मंथरगति, .....

x^0 = x^(1 - 1)

x^0 = [x^1] * [x^(-1)]

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Volume of cylinder V = 1.54 liter = 1.54 * 1000 cm3 = 1540 cm3 height h = 20 cm area of base A = ? we know, V = π r2 h or, V = A * h or, A = V/h = 1540 / 20 = 77 .....

Here,  r = 7 m Now,  Heght of cylinderical part h  = 20 - 7 = 13 m Total volume of tank  = volume of cylinder + volume of hemi-sphere.                         .....

1. She never speaks the truth. 2. The principal applauded saying that they had done well. 3.An elephant might even be killed by an .....

A first aid box is a box that holds supplies used to treat minor injuries including cuts, scrapes, burns, bruises, and sprains.  

he pituitary gland is a small pea-sized gland that plays a major role in regulating vital body functions and general wellbeing. It .....

31. The given figure is a pillar made up of a square based prism and a pyramid. If the length of the side of base is 6 ft., height of the prism is 8 ft. and height of the pyramid is 4 ft., then what will be the cost of painting the surface of the pillar at the rate of Rs. 90 per square feet? Find it.

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32. The given figure is a pillar made up of a square based prism and a pyramid.If the length of the side of base is 6ft, height of the prism is 8ft, and height of the pyramid is 4ft., then what will be the cost of painting the surface of the pillar at the rate of rs.90 per square feet? Find it.

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33. The sum of square of two number is 233 and one of the number is 3 less than twice the other number. Find the number.

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34. Is broom and fishing rod belongs to third class level. Why?

Yes, both broom and fishing rod belongs to third class lever because effort lies between fulcrum and .....

35. Lens of our eyes is biconcave or biconvex?

Lens of our eyes are biconvex becauses it converges the rays of light coming from objects and form image in the retina. A biconvex lens is a special type of lens comprising two convex lenses one behind another. This types of lenses have two convex .....

36. What is perpendicular?

In any right angled triangle, there are hypotenuse(h), base(b) and perpendicular (p). Perpendicular is the line segment which is just opposite of the reference angle. In the above figure, If you take ⦛A as reference angle , then, perpendicular .....

37. Find perimeter of triangle when a =3cm, b= 4cm and c=5cm.

Perimeter of triangle = sum of all sides                                   = .....

38. Define fulcrum.

  Fulcrum is a pivot point around which a lever is supported or .....

39. How was earth formed?

There are different hypothesis regarding the origin of earth.One of them is nebular hypothesis: According to nebular hypothesis : A first Nebula was formed. Nebula means collection of dust and different gases. Then , gravity developed and more .....

40.  Formula of pentagon.

A pentagon is apolygon having five sides. To find interior angles of pentagon, we use formula (n-2)* 180 To find total interior angle , you can use formula [(n-2)/n]*180 To find perimeter, add all the .....

41. What is a table?

A table is a piece of furniture with a flat top and one or more legs, providing a level surface for eating, writing, or .....

42. What are MA and VR of a lever?

Answer: Mechanical Advantage (MA) is defined as the ratio of the load moved by a simple machine to the effort applied on it. Velocity ratio (VR) is defined as the ratio of the distance moved by effort to the distance moved by .....

43. Show the relation among ma and vr and n

Mechanical advantage (MA)  is the ratio of Load to the effort whereas ,the velocity ratio is the ratio of effort distance to the load distance and, the efficiency is the ratio of output work to the input .....

44. Define magnitude

In physics ,the study of motion distance, velocity, speed and mass expressed as quantities — is divided between vectors and scalars. A one-dimensional scalar is described by its magnitude alone, while a two-dimensional vector is fully .....

45. What is element 118?

Oganesson is a synthetic chemical element with the symbol Og and atomic number 118. It was first synthesized in 2002 at the Joint Institute for Nuclear Research in Dubna, near Moscow, Russia, by a joint team of Russian and American .....

46. What is sub orbital?

A shell contains one or more subshells. A subshell contains one or more orbitals. An orbital can contain up to 2 electrons.

 

The shell is assigned a principle quantum number, n (n = 1, 2, 3, ...). Different .....

47. How is the census of the different animals taken?

For estimating,  the size and density of populations ,  quadrats and the mark-recapture method are mostly used.

Quadrat method

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48. How can the interrelationship between work, energy and power be explained in a sentence?

Work, energy and power are inter-related and inter-dependent. Let’s see how, Work- Energy is needed for work. Power- It is the effectiveness of doing work. It is the rate of doing work. Energy- It is the capacity or potential to work. In a .....

49. What is metallic luster?

Metallic luster refers to the property of metal that describes the amount of light that reflects off the metal

The luster of a metal is due to presence of free moving electrons.The movement of electrons creates a shinny atmosphere on the .....

50. Find the inverse line segment joining the points (4, 5) and Q(4, 3) with respect to the circle whose center is (2, 3) and radius 4.

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