a person exerts a force of 200 Newton in order to pull a mass of 100 kg of to the height of 2 m using a ladder with efficiency 80% what is the minimum height of the ladder​

Answermake them get very hot and over time wear them out;

Don't smoke.it ruins your life.confront your husband on how you are feeling and why you're depressed.weed is never the answer.there are so many more options out there for depression.weed will make the depression worse.so, stay clean and you will have support

Iwas thinking the wavelength is one half its original value

I’m not sure about this question