Um trem de 100 metros de comprimento atravessa uma ponte de 150 metros. O trem viaja com uma velocidade de 90 km/h. Quanto tempo o trem leva para atravessar a ponte?

Matt is driving down 7th street. he drives 150 meters in 18 seconds. assuming he does not speed up or slow down, what is his speed?

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy