Answer:
Q=cmΔT
Q1(steel)=Q2(water)
c1•m1• (t1-t) = c2•m2• (t-t2)
628•0.1•(80-t) = 4180•0.2• (t-10)
5024-62.8t = 836t -8360
5024+8360=(836+62.8)t
t=14.9°C
Answer:
A physical change is the change of the shape or color.
Explanation:
Answer
Plane
There are two types of curved mirrors, concave and convex. Both curved mirrors form that are magnified.
Concave will form an image on the same side as the object and it may not be the mirror used.
Plane mirror on the other hand forms images behind the mirror in all cases. The image formed is upright meaning it is virtual.
∴ The mirror used is a plane mirror.
To solve this problem we will use the concepts related to the electromagnetic force related to the bases founded by Coulumb, the mathematical expression is the following as a function of force per unit area:

Here,
F = Force
L = Length
k = Coulomb constant
I =Each current
d = Distance
Force of the wire one which is located along the line y to 0.47m is
then we have



Considering the B is zero at




Therefore the value of y for the line in the plane of the two wires along which the total B is zero is 0.25m
Answer: The direction of an electric current is by convention the direction in which a positive charge would move. Thus, the current in the external circuit is directed away from the positive terminal and toward the negative terminal of the battery. Electrons would actually move through the wires in the opposite direction.
Explanation: