7. Responde à seguinte questão.
Numa atividade laboratorial, mediu-se o peso de uma esfera metálica maciça, tendo-se obtido o
valor de 8,5 N. De seguida, mergulhou-se a esfera num líquido e observou-se que o valor lido
no dinamómetro era diferente.
Sabendo que o valor da impulsão sofrida pela esfera no líquido foi 1,3 N, qual terá sido o valor
marcado no dinamómetro quando a esfera se encontrava totalmente mergulhada.
Isto é físico química
Answers: 3
Physics, 22.06.2019 06:00
An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?
Answers: 3
Physics, 22.06.2019 17:20
Properties seen when one one substance changes to another are known as properties
Answers: 1
Physics, 22.06.2019 18:00
Cells in the nervous system have a potential difference of 70 mv across the cell membrane separating the interior of the cell from the extracellular fluid. this potential difference is maintained by ion pumps that move charged ions across the membrane. is this an emf? select the correct answer and explanation. 1)no. the ion pumps cannot separate charges; thus, they cannot create a potential difference. 2)yes. the ion pumps cannot separate charges, but they still can create a potential difference. 3)yes. the ion pumps can actively separate charge; thus, they can create a potential difference. 4)no. the ion pumps can separate charges, but they cannot create a potential difference.
Answers: 1
7. Responde à seguinte questão.
Numa atividade laboratorial, mediu-se o peso de uma esfera metálica...
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