force of 200N is applied the coefficients of friction are k=0.15 and a s=0.27, what is the mass of the container? 20 points!!

Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

Preciso de ajuda na parte de termometria e tenho prova amanhã ajuda ae prf