You throw a ball upward with an initial velocity of 8.2 m/s. Gravity gives the ball a downward acceleration of -9.8 m/s2. What is the velocity of the ball 1.5 s after it was thrown?

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?

The magnitude of the poynting vector of a planar electromagnetic wave has an average value of 0.939 w/m^2 . the wave is incident upon a rectangular area, 1.5 m by 2.0 m, at right angles. how much total electromagnetic energy falls on the area during 1.0 minute?

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?