Score for Question 1: Click or tap here to enter text. of 10 points) 1.A sailboat moves north for a distance of 20.0 km when blown by a wind from the exact southwest with a force of 3.50 x 10^4 N. The sailboat travels the distance in 2.5 h.
a) How much work was done by the wind?
b) What was the wind’s power?
Your response should include all of your work and a free-body diagram.

2, 2. A worker applies 170 N of force on a lever to lift a 1250 N crate 0.10 m.
a) If the lever is 100% efficient, how far does he need to push his side?
Your response should include all of your work.

2. A worker applies 170 N of force on a lever to lift a 1250 N crate 0.10 m.
a) If the lever is 100% efficient, how far does he need to push his side?
Your response should include all of your work.

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r

An atom that has gained or lost electrons is called an _

Did anyone do 1.06 lab: cloud formation i need with it i go to k12 lavcame i need to get it done quick