Aman pushes on a piano of mass 180 kg so that it slides at a constant velocity down a ramp that is inclined at 11° above the horizontal. no appreciable friction is acting on the piano. calculate the magnitude and direction of this push if the man pushes parallel to the incline. 34.3 n up the incline 337 n up the incline 337 n down the incline 34.3 n down the incline

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Examine the equation. 23490th→23088ra+42he what kind of barrier would you need to block the radioactive particles from this reaction? a. a piece of paper b. a sheet of aluminum foil c. a two-inch block of lead d. a solid concrete block