Homework Help for Physics

A car travels along a straight road at a constant speed of 20 meters per second. The car's brakes can decelerate it at a rate of 5 meters per second squared. If the car's driver sees an obstacle and applies the brakes, how far will the car travel before coming to a complete stop?

Why Refraction takes place 

Why is density of liquid water is greater than that ice 

Write the state of matter

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What is Newton 3rd law of motion?

Give the disadvantages of a direct current generator over alternating current generator.

Explain how an electric bell jar works

Where does electric power reside in a charged conducting material?

(A) Central part

(B) Over the body

(C) Depends on the nature of the body

(D) The outer surface

Which of the following elements has lowest melting point? 

(A) Titanium

(B) Sulphur

(C) Argon

(D) Zinc

 In May 2019, the kilogram was redefined for the first time in 130 years. It will now be redefined as a fundamental property of nature, called what?

(A) Planck's constant

(B) electrical constant

(C) Gravitational constant

(D) magnetic constant

 Instrument for measuring blueness of the sky or ocean is called ___________.

(A) Bathymeter

(B) Ceraunograph

(C) Cyanometer

(D) Barometer

Jyoti is a unit of intensity?

(A) Opter

(B) Candela

(C) Newton

(D) None of these

What is the normal temperature of the human body?

(A) 65 degrees

(B) 95 degree

(C) 98.6°F

(D) 99 degrees