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Q:
1. Responda as questões sobre quantização de carga a) Um corpo possui carga elétrica de \( 1,2 \times 10^{-6} \mathrm{C} \). Sabendo-se que a carga elétrica fundamental é \( 1,6 \times 10^{-19} \mathrm{C} \), encontre quantos elétrons estão em falta nesse corpo. b) A carga elétrica de um corpo é sempre múltipla da carga fundamental, de um único elétron, cujo módulo é igual a \( 1,6.10^{-19} \mathrm{C} \). Se um corpo perder \( 2,0.10^{11} \) elétrons, então, qual sua carga elétrica total?
Q:
же пути неподвижному вагону массой 28 т и автоматически сцепля- ется с ним. После сцепки вагоны движутся прямолинейно со скоро- стью \( 0,5 \mathrm{~m} / \mathrm{c} \). Какова была скорость вагона массой 35 т перед сцеп- кой?
Q:
11 La fisica si occupa di tutto quello che si può: \begin{tabular}{|l|l} A & studiare \\ B & contare \\ C & misurare \\ D & descrivere \end{tabular}
Q:
6 Una moto che viaggia a \( 72 \mathrm{~km} / \mathrm{h} \) viene superata da un'auto che viaggia a \( 108 \mathrm{~km} / \mathrm{h} \). La moto comincia ad accelerare, raggiungendo i \( 120 \mathrm{~km} / \mathrm{h} \) in \( 4,6 \mathrm{~s} \). a) Qual è l'accelerazione della moto? b) Dopo quanto tempo e quanto spazio la moto raggiunge l'auto?
Q:
Una cuerda tiene una masa de 75 gramos y 1.25 metros de longitud, produciendo 86 ondulaciones en un minuto y 12 segundos, con una amplitud de 8 cm y una longitud de onda de 75 centímetros. Determina periodo, frecuencia, veiocidad de propagación, densidad lineal, energia, potencia
Q:
Quelle force due à l'eau subit un hublot de sous-marin de \( 600 \mathrm{~cm}^{2} \) à une profondeur de 6000 m sous l'Océan Pacifique?
Q:
What happens to thermal energy as you increase mass? Why?
Q:
In what direction does heat transfer occur?
Q:
Sound intensity varies inversely as the square of the distance from the sound source. If you are in a movie theater and you change your seat to one that is twice as far from the speakers, how does the new sound intensity compare with that of your original seat? The sound intensity is \( \square \) of what it was originally. (Type an integer or a fraction.)
Q:
Radiation machines used to treat tumors produce an intensity of radiation that varies inversely as the square of the distance from the machine. At 3 meters, the radiation intensity is 62.5 milliroentgens per hour. What is the intensity at a distance of 1.9 meters? The intensity is tenth as needed.)
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