All categories

3 years ago

Even though petrol and water are liquids,what is different you observed between them?

Physics

1 answer:

stellarik [79]3 years ago

7 0

Answer:

water are heavier than patrol . Because petrol have less density than water ...

You might be interested in

When a ray enters into air from glass slab

Nina [5.8K]

Answer:

a ) Its wavelength decreases

Explanation:

When a ray enters into air from glass slab its wavelength decreases.

3 0

3 years ago

Self-registering thermometers are used for:

Angelina_Jolie [31]

Self-registering thermometers are used for temperature or depth profile. It registers the maximum and minimum temperature of the substance occurring in the interval of time between two consecutive settings of the instrument.

5 0

2 years ago

A 60-kg box is being pushed a distance of 7.9 m across the floor by a force Upper POverscript right-arrow EndScripts ⁢ whose mag

il63 [147K]

Answer:

Explanation:

Given

mass of box=60 kg

distance=7.9 m

$\vec{P}=194 N$

Force is parallel to displacement

coefficient of kinetic energy $\mu =0.23$

Work done by Force

$W=P\cdot x=Px\cos \theta$

$W=Px\cos 0$

$W=194\times 7.9=1532.6 N$

Work done by Friction force

$W=f_r\cdot x$

$W=\mu Nx \cos 180$

$W=-0.23\times 60\times 9.8\times 7.9=-1068.396 J$

negative sign indicates that force is opposite to displacement

Work due to Weight and Normal reaction is zero as the force is perpendicular to Displacement

6 0

2 years ago

Which statement does NOT explain the concept of the Doppler Effect? A) As an observer approaches a stationary sound, the sound w

mixer [17]

The answer is D) As a sound source moves away from a stationary object, the sound waves are compressed, increasing the pitch. This statement does not explain the concept of Doppler Effect. Due to the Doppler effect, the pitch decreases as the sound moves away from you.

7 0

3 years ago

A stone of weight 1 N falls downwards. Its g.p.e. decreases by 100 J. How far has it fallen?

sattari [20]

Answer:

h = 100 m

Explanation:

Given that,

The weight of a stone, W = 1 N

It falls downwards. Its gravitational potential energy decreases by 100 J.

We need to find how far it is fallen.

The gravitational potential energy of an object is given by :

E = mgh

h is from where it has fallen

$h=\dfrac{E}{mg}\\\\h=\dfrac{100}{1}\\\\h=100\ m$

So, it has fallen 100 m.

3 0

2 years ago

Even though petrol and water are liquids,what is different you observed between them?​

Even though petrol and water are liquids,what is different you observed between them?