Physics, 17.02.2020 18:13, bbgirl2505
A styrofoam coffee cup is so light and it is such a good insulator, that its mass and heat capacity may often be neglected in measurements like this one, thus making the analysis much simplier.
a. If 150 grams of water at room temperature, 20°C is placed in a Styrofoam cup, how long will it take to raise the temperature of the water to 30°C? Assume the the power supply supplies a current of 2 amperes at a voltage of 10 volts.
Answers: 2
Physics, 22.06.2019 15:30, Mhayslett12
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
Answers: 2
Physics, 22.06.2019 16:40, byers024
Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward
Answers: 1
A styrofoam coffee cup is so light and it is such a good insulator, that its mass and heat capacity...
Mathematics, 12.08.2020 07:01
Mathematics, 12.08.2020 07:01