Newtons third law of motion is as below
every action has an equal and opposite reaction
#action=force
#reaction =another force
The formula for mass you can find from the density equation. Multiply the volume by both sides of the equation.
density = mass/volume
volume*density = mass
And there you are :)
Because of molecular vibration the heat transferred through a solid is called Conduction
Answer:
14 μm
Explanation:
The magnetic field due to a long straight wire is B = μ₀i/2πr where μ₀ = permeability of free space = 4π × 10⁻⁷ H/m, i = current = 7.0 A and r = distance of credit card from magnetic field.
So r = μ₀i/2πB since B = 1000 gauss = 1000 G × 1 T/10000 G = 0.1 T
r = 4π × 10⁻⁷ H/m × 7.0 A/(2π × 0.1 T)
r = 2 × 10⁻⁷ H/m × 7.0 A/0.1 T
r = 14 × 10⁻⁷ H/m × A/0.1 T
r = 140 × 10⁻⁷ m
r = 1.4 × 10⁻⁵ m
r = 14 × 10⁻⁶ m
r = 14 μm
Answer:
49.12 °C
Explanation:
= mass of gold sheet = 12 g
= specific heat of gold = 0.129 J/g°C
= initial temperature of gold sheet = 15 °C
= mass of iron sheet = 20 g
= specific heat of iron = 0.449 J/g°C
= initial temperature of iron sheet = 55 °C
= Final equilibrium temperature
Using conservation of heat