H. A stone is projected vertically up with the velocity of 19.6 m/s. I) Calculate time taken by the stone to reach the maximum height.
ii,) how long it takes to travel 294 m below the point of projection.
plz solve this equation
and don't send link​

Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

How many atoms of nitrogen are in the chemical formula ni(w on

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 %.