Question

Answer the question in the picture

Answer 1

Answer:

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Explanation:

here is your answer

i. 0

ii. zero work

iii. density

iv. kinetic energy

v. heat energy

vi. 72km/ hr

vii. 4g/cm³

viii. 1kg/m³

ix. nuclear energy

x. graph sheet

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Answer 2

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I am Devanshu for you..

Solutions for above Fill in the blanks.

1. 0 joules.

Reason :- No change in position, weight remains the same and height is zero ( Rest position ).

So, the POTENTIAL ENERGY = mgh = x(0)(0) = 0J

2. Zero Work Done.

Reason :- The man exerts force on the wall , the wall does not move . work done = force applied * displacement and since the displacement of the wall is zero . , work done is also zero..

3. Density.

Reason :- In physics, mass per unit volume is said to be known as Density.

4. Kinetic Energy of the body..

Reason :- In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

5. Potential ➡ Heat Energy ➡ Kinetic Energy ➡ Electrical Energy.

Reason :- At thermal power house, chemical energy of coal changed into heat energy, which further converted into Kinetic Energy and Electrical Energy.

6. 72 km/hr

Calculation :- 20 × 18/5 = 360/5 = 72km/hr..

7. Density of the cork is 4 g/cm³

Calculation :- Volume of the cork = 25cm³

Mass of the water = 100g

Density = Mass/ Volume = 100/25 = 4g/cm³.

8. 1kg/m³

Calculation :- Volume of water = 5L.

Mass of water = 5Kg.

Density = Mass/Volume = 5kg/5L = 1kg/m³..

9. Nucleus of the atom.

Reason :- Electrical energy is the movement of electrons.

10. The area of an irregular object can be obtained by drawing an outline of the shape of the object on a graph paper of 1 square centimeter marked square..

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