Un autobús que viaja a 80km/h. ¿Qué tiempo se estará moviendo a 150 metros de distancia?

El tiempo que tarda el autobús en estar a 150 metros de distancia es de 6.75 segundos

Explanation:

La velocidad es la relación entre la distancia y el tiempo recorrido. Está dado por la fórmula:

Velocidad (v) = distancia (d) / tiempo (t)

v = d/t

Dado que:

velocidad del autobús = 80 km / h = 80 km/h × 1000 m / 3600 s = 22.22 m/s

El autobús está a 150 metros de distancia, que es la distancia = 150 m.

Usando la ecuación de velocidad:

v = d / t

t = d / v

sustituyendo valores:

t = 150 m / (22.22 m/s)

t = 6.75 s

El tiempo que tarda el autobús en estar a 150 metros de distancia es de 6.75 segundos

answer: the correct answer is 1.

explanation: there are various process in which a radioactive nuclei decays:

1) alpha decay: in this process, a heavier nuclei decays into lighter nuclei by releasing alpha particle. the mass number is reduced by 4 units.

2) electron capture: in this decay process, a parent nuclei absorbs an electron and gets converted into a neutron. simply, a proton and an electron combines together to form a neutron. mass number does not change in this process.

3) gamma ray emission: it is a decay process in which an unstable nuclei gives excess energy by a spontaneous electromagnetic process. this decay releases . this process does not change the mass number.

4) positron emission: it is a type of decay process, in which a proton gets converted to neutron and an electron neutrino. this is also known as -decay. in this the mass number remains same.

from the above information, we see that only alpha-decay is producing a change in the mass number of the nucleus.