I would say the last option, since with an increase in temperature, water molecules will speed up.
Please ignore my comment -- mass is not needed, here is how to solve it. pls do the math
at bottom box has only kinetic energy
ke = (1/2)mv^2
v = initial velocity
moving up until rest work done = Fs
F = kinetic fiction force = uN = umg x cos(a)
s = distance travel = h/sin(a)
h = height at top
a = slope angle
u = kinetic fiction
work = Fs = umgh x cot(a)
ke = work (use all ke to do work)
(1/2)mv^2 = umgh x cot(a)
u = (1/2)v^2 x tan (a) / gh
Explanation:
The measure of average kinetic energy of particles or molecules of a substance is known as temperature.
When we increase the temperature of a substance then its molecules tend to gain kinetic energy because of which these molecules collide with each other. Hence, they move away from each other leading to change in the state of matter.
This means that increase in temperature changes solid into liquid and liquid into gas.
Thus, we can conclude that the temperature of a material is a measure of the average kinetic (motion) energy of the molecules in the material. As the temperature increases, a solid turns into a gas when the particles are moving fast enough to break free of the chemical bonds that held them together.
Answer:
Radius of bigger loop(R) =4.5cm
Explanation:
Consider a circular path of radius r around the wire. The magnetic field along that path is given by
;
∫B*dl = k*I where I is the current enclosed. From symmetry, ∫B*dl = 2*π*r*B
B = K*I/r, so the magnetic field varies inversely as the loop radius and directly as the current.
The smaller loop current to radius ratio is 12/2.7
The bigger loop current to radius ratio is = 20/R
12/2.7 = 20/R
R = (20 * 2.7)/12
R=54/12
R=4.5cm
