Snowballs are thrown with a speed of 13 m/s from a roof 7.0 m above the ground. Snowball A is thrown straight downward; snowball
1 answer:
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Answer:
La magnitud del EMF es 0.00055 volts
Explanation:
El EMF inducido es proporcional al cambio en el flujo magnético según la ley de Faraday:
Como en nuestro caso hay solo un lazo de alambre, entonces N=1 y obtenemos:
Necesitamos expresar el flujo magnético dada la geometría del problema;
donde A es el área de la bobina que permanece constante con el tiempo, y B es el campo magnético que cambia con el tiempo. Por lo tanto, la ecuación para el EMF se convierte en:
Answer:
b) TA = TB = TC
Explanation:
- When the blocks are brought into contact and isolated from the environment, they will exchange heat until they achieve thermal equilibrium.
- During this exchange, the hotter body will lose heat, which will be gained by the cooler body.
- The equilibrium state will be established once this equation is satisfied:
- Substituting the initial temperatures T₀A = 300º C and T₀B = 400ºC, while simplifying for equal block masses mA = mB, enables us to solve for the final temperature, Tfin:
- At equilibrium, when both blocks combine, they will yield a uniform final temperature of 350ºC.
- When block C, also at this temperature, makes contact, all three blocks will simultaneously reflect this final temperature of 350 ºC.
- Therefore, option b) is correct.