Answer:
Radius of aluminium sphere which has same mass as of sphere of iron with radius 14 m is 40.745 meters.
Explanation:
Let the radius of aluminium sphere be
From the relation between density, mass and volume we know that
Applying equation 'i' separately to iron and aluminium sphere we get
Equating the masses of iron and aluminium spheres we get
Answer:
Electromagnetic wave
Explanation:
Snow days are announced on the by phoning the parents and guardians and also the news about a snow day can be broadcast on the television or radio airwaves or on the internet which are forms of electromagnetic wave transmission
An electromagnetic wave are oscillations of electric and magnetic fields which form electric and magnetic field vibrations
The direction of the oscillating electric and magnetic fields is perpendicular to the direction of propagation of the electromagnetic wave.
Visible light has a wavelength of 400-700nm, which means light microscopes cannot see anything smaller than this. Atoms are much smaller than this, so they are not visible to light microscopes.
To solve this problem we will use the concepts given by the rotational kinetic energy which describes the energy in a body product of its moment of inertia and its angular velocity, mathematically this is given as,
Where,
I = Moment of Inertia
= Angular Velocity
Replacing with our values we have that,
Therefore the rotational energy is 178.125J
Which are characteristics of all living things? Select three options.
a.grow and develop
b.make their own food
c.are made of many cells
d.respond to stimuli
e.can reproduce