To demonstrate an elastic collision, a teacher places a tennis ball on the floor. She wants to hit the ball so that the followin

Answer:

Explanation:

If the acceleration due to gravity on the Moon's surface is and the acceleration due to gravity on the Earth is , we can write that:

If the radius of the Moon is and the radius of the Earth is , we can write that:

By Newton's 2nd Law we know that F=ma and using Newton's law of universal gravitation  we can calculate the gravitational force an object with mass <em>m</em> experiments from a planet with mass <em>M</em> being at a distance <em>r</em> from it. We will assume our object is on the surface so this distance will be the radius of the planet.

Since the force the object experiments is the force of gravitation we can write, for Earth:

which means:

And for the Moon:

which means:

We can then write the fraction:

Which means:

Answer:

(a) 6.283 Wb (b) 69.11 Wb (c) I = 0.628 A

Explanation:

Given that,

The diameter of the loop, d = 40 cm

Radius, r = 20 cm

Initial magnetic field, B = 5 mT

Final magnetic field, B' = 55 mT

Initial magnetic flux,

Final magnetic flux,

Due to change in magnetic field an emf will be generated in the loop. It is given by :

Let I be the current in the loop. We can find it using Ohm's law such that,

Hence, this is the required solution.

• The resources, for example, sunshine, air, water, soil, plants, animals, minerals, rivers etc. which after natural formation remain distributed on the earth, are known as natural resource.
• The natural resources are found in solid, liquid or gaseous states, and in metallic or non metallic form.