How does secondhand smoke affect children?
It increases their asthma rates.
It increases their attention span.
It increases their learning ability.
It increases their chance of obesity.

Light traveling in a medium with a refractive index 1.19 is incident on a plate of another medium with index of refraction 1.79. at what angle of incidence is the reflected light fully polarized?

Two pans of a balance are 24.1 cm apart. the fulcrum of the balance has been shifted 1.33 cm away from the center by a dishonest shopkeeper. by what percentage is the true weight of the goods being marked up by the shopkeeper? assume the balance has negligible mass. answer in units of %.

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (