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Liula [17]
3 years ago
5

After walking across a carpeted floor in socks, Jim brings his finger near a metal doorknob and receives a shock. This demonstra

tes that:
Group of answer choices
Physics
1 answer:
vovangra [49]3 years ago
6 0

Answer:

After walking across a carpeted floor in socks, Jim brings his finger near a metal doorknob and receives a shock. What does this demonstrate? Frictional forces require direct contact. Electrical forces can act at a distance.

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After measuring a sample of individuals, a researcher finds that one participant's score is three times bigger than another part
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Answer:

<u>Ratio</u> scale.

Explanation:

  • Ratio scale is a quantitative scale used for variable measurement which allows any researcher to compare the intervals of the measured parameter.
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3 years ago
Um ônibus percorre a distância de 480 km, entre Santos e Curitiba, com velocidade escalar média de 80 km/h. De Curitiba a Floria
Mariulka [41]

Answer:

10 h

Explanation:

velocidade é a taxa de variação da distância no tempo. é a razão entre a distância e o tempo

de Santos e Curitiba:

distância (d) de 480 km, velocidade (s) de 80 km/h

s=\frac{d}{t}\\ t=\frac{d}{s} =\frac{480}{80}=6h

de Curitiba e Florianópolis:

distância (d) de 300 km, velocidade (s) de 75 km/h

s=\frac{d}{t}\\ t=\frac{d}{s} =\frac{300}{75}=4h

tempo médio de ônibus entre Santos e Florianópolis = 6h + 4h = 10h

7 0
3 years ago
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