3) Change in Temperature
Temperature light on C Temperature light off °C
Time
Time
Sand Water
Sand Water
(min)
(min)
Start 22 22 Start 58 30
1 26 24 1 52 30
5 36 26 5 46 30
10 44 28 10 36 28
15 58 30 15 26 26
Josh did an experiment recording the changes in temperature in sand and water when exposed to a light source, and then when
the light source was removed. Josh noticed that the sand heated up faster than the water and then cools faster than the water.
Josh concludes that
-1)
A)
sand is the better insulator
B)
water is the better conductor
water is the better insulator.
D)
sand has a higher heat capacity

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

An electron is traveling with initial kinetic energy k in a uniform electric field. the electron comes to rest momentarily after traveling a distance d. (a) what is the magnitude of the electric field

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