Que fracción de luz que llega directa a una lamina de vidrio se refleja en la primera superficie?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.