Responder:
El remolque del tractor no atropellará a la vaca.
Explicación:
Dado lo siguiente:
Velocidad del tractor remolque: 69 km / h
Tiempo necesario para detenerse después de aplicar los frenos = 4 segundos
Distancia de vacas desde el remolque del tractor = 25 metros
Por lo tanto, la distancia recorrida por el remolque del tractor después de aplicar los frenos:
Velocidad del tractor remolque / Tiempo
69 km / h = (69 * 1000) m / 3600s = 69000m / 3600s = 19.17m / s
(19,17 m / s ÷ 4 s) = 4,8 m
Como la distancia de la vaca está más lejos (25 m), el remolque del tractor no pasará por encima de las vacas
thiers no choices to chose from.
The activity series shows the order of reactivity of elements. The reaction Br2 + NaF -----> does not occur because bromine is less than fluorine in the activity series.
The activity series shows the order of reactivity of elements. The elements that are higher in the activity series will displace the elements that are lower in the activity series.
The activity series of halogens is shown as; F > Cl > Br > I. Let us consider the reaction; Br2 + NaF ----->
We can see that bromine is less than fluorine in the activity series hence there will be no reaction because bromine can not not displace fluorine.
Learn more: brainly.com/question/4612545
B is correct. Trust yourself.
