(Triple points) A scientist found that a sample of metal expands from 26.1 cm3 to 26.2 cm3 when heated from 25 °C to 75 °C. What would the coefficient of volume expansion be for this metal?

7.66×10⁻⁵ K⁻¹

Explanation:

From the question,

γ = (v₂-v₁)/[v₁(t₂-t₁)] Equation 1

Where γ = coefficient of volume expansion, v₁ = initial volume, v₂ = Final volume, t₁ = initial temperature, t₂ = Final Temperature.

Given: v₁ = 26.1 cm³, v₂ = 26.2 cm³, t₁ = 25 °C, t₂ = 75 °C.

Substitute these values into equation 1

γ = (26.2-26.1)/[26.1(75-25)]

γ = 0.1/(26.1×50)

γ = 0.1/1305

γ = 7.66×10⁻⁵ K⁻¹

Hence the coefficient of volume expansion is 7.66×10⁻⁵ K⁻¹

electrical power

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles