What is the value of α in the equation α = t2v − t2i / 20, given the values of ti and tv? a) α ≈ 1.9 × 10−5/◦C b) α ≈ 1.9 × 10−6/◦C c) α ≈ 1.9 × 10...
What is the value of α in the equation α = t2v − t2i / 20, given the values of ti and tv?
a) α ≈ 1.9 × 10−5/◦C
b) α ≈ 1.9 × 10−6/◦C
c) α ≈ 1.9 × 10−4/◦C
d) α ≈ 1.9 × 10−3/◦C
e) α ≈ 1.9 × 10−2/◦C
I) The temperature T at which the pendulum has a length of l0 and an oscillation period of 1s is approximately 19.6◦C.
II) The length of the pendulum can be written in terms of the lengths l1 and l2 as l = 2l1 − l2.
a) Only afirmation I is true.
b) Only afirmation II is true.
c) Both afirmations are true and afirmation I is a justification for afirmation II.
d) Both afirmations are true and afirmation II is a justification for afirmation I.
e) Both afirmations are false.
a) α ≈ 1.9 × 10−5/◦C
b) α ≈ 1.9 × 10−6/◦C
c) α ≈ 1.9 × 10−4/◦C
d) α ≈ 1.9 × 10−3/◦C
e) α ≈ 1.9 × 10−2/◦C
I) The temperature T at which the pendulum has a length of l0 and an oscillation period of 1s is approximately 19.6◦C.
II) The length of the pendulum can be written in terms of the lengths l1 and l2 as l = 2l1 − l2.
a) Only afirmation I is true.
b) Only afirmation II is true.
c) Both afirmations are true and afirmation I is a justification for afirmation II.
d) Both afirmations are true and afirmation II is a justification for afirmation I.
e) Both afirmations are false.
💡 1 Resposta
Ed 
Não é possível determinar o valor de α apenas com os valores de ti e tv. É necessário ter mais informações para resolver a equação. Portanto, a resposta é: "a pergunta não pode ser respondida com as informações fornecidas". Quanto à segunda parte da pergunta, a afirmativa I é verdadeira e a afirmativa II é falsa. Portanto, a resposta correta é a letra "a) Only afirmation I is true."
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