Physics, 16.07.2019 12:00 rafi10

Mention a few precautions to be taken at the time of spraying the pesticides

Answers: 1

Show answers

Answers

Pesticides are nothing but strong chemicals that kill the pests.

They are harmful for human also.

While spraying, the pesticide mixes with the air and enters the farmer’s body who is spraying.

Inside the body this chemical gets mixed with the blood and affects the immune system.

As a result the farmer falls ill.

So it is important that the person who is spraying pesticide mush cover his mouth and nose to protect himself from its harmful effect.

Answer from: Quest

true is the correct answer

hope i

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

Another question on Physics

Physics, 22.06.2019 04:30

In a system, when potential energy decreases, then entropy also decreases. true false

Answers: 3

Answer

Physics, 22.06.2019 22:40

Calculate the volume of this regular solid. what is the volume of the cone? round your answer to the nearest hundredth

Answers: 1

Answer

Physics, 23.06.2019 05:40

Whithin which type of system is neither the total mass nor the total energy conserved ? a. open b. connected c. isolated d. closed

Answers: 2

Answer

Physics, 23.06.2019 08:30

Because air contracts as it cools, the air pressure inside a freezer is typically lower than on the outside. why do ice cubes inside a freezer tend to shrink over time? the ice sublimes, and then the water vapor deposits as ice crystals on the sides of the freezer. the ice melts, and then the liquid freezes as ice crystals on the bottom of the freezer. the ice dissolves oxygen from the air, forming a denser crystalline matrix. the ice reacts chemically with carbon dioxide in the air, forming gaseous carbon compounds.

Answers: 1

Answer

You know the right answer?

Mention a few precautions to be taken at the time of spraying the pesticides...

Questions