\(\displaystyle{a}{n}=\frac{{1}}{{n}}\) and bn=1

Question

asked 2021-04-02

For what electric field strength would the current in a2.0-mm-diameter nichrome wire be the same as the current in a1.0-mm-diameter aluminum wire in which the electric field strengthis 0.0080 N/C?

asked 2021-03-15

Three long wires (wire 1, wire 2,and wire 3) are coplanar and hang vertically. The distance betweenwire 1 and wire 2 is 16.0 cm. On theleft, wire 1 carries an upward current of 1.50 A. To the right,wire 2 carries a downward current of 3.40 A. Wire 3 is located such that when itcarries a certain current, no net force acts upon any of the wires.

(a) Find the position of wire 3, relative to wire 1.

(b) Find the magnitude and direction of the current in wire 3.

(a) Find the position of wire 3, relative to wire 1.

(b) Find the magnitude and direction of the current in wire 3.

asked 2021-03-27

Water is being boiled in an open kettle that has a 0.500-cm-thick circular aluminum bottle with a radius of 12.0cm. If the water boils away at a rate of 0.500 kg/min,what is the temperature of the lower surface of the bottom of the kettle? Assume that the top surface of the bottom of the kettle is at \(\displaystyle{100}^{\circ}\) C.

asked 2020-10-27

Find the points of intersection of the line x = 3+2t, y =5+7t, z = -3+t, that is, I(t) = 3+2t, 5+7t, -3+t, with the coordinate planes.

asked 2021-01-31

Let a, b and c be a real numbers such that a>0, b<0 and c<0. Find the sign of each expression.

a) -b

b) a+c

c) c-a

d) \(ab^2\)

a) -b

b) a+c

c) c-a

d) \(ab^2\)

asked 2020-11-06

Find the negation of the following statement:

"There exists a negative real number z such that -3

"There exists a negative real number z such that -3

asked 2021-02-05

Find the negation of the following statement:

"There exists a negative real number z such that -3

"There exists a negative real number z such that -3

asked 2020-11-08

Let a, b and c be a real numbers such that a>0, b<0 and c<0. Find the sign of each expression.

a) -b

b) a+c

c) c-a

d) \(\displaystyle{a}{b}^{{2}}\)

a) -b

b) a+c

c) c-a

d) \(\displaystyle{a}{b}^{{2}}\)

asked 2021-03-09

Let a, b and c be a real numbers such that a>0, b<0 and c<0. Find the sign of each expression.

a) -a

b) bc

c) a-b

d) ab+ac

a) -a

b) bc

c) a-b

d) ab+ac

asked 2021-02-05

Find the negation of the following statement:

"There exists a negative real number z such that -3

"There exists a negative real number z such that -3