25. A car starting from rest has a constant acceleration of 5 m/s². How long will it take to reach a speed of 20 m/s? O a. 1.25 sec O b. 4 sec Oc. 5 sec O d. 20 sec

The diagram representa a primary coil P, carrying a steady current, and a secondary coil S,which is connected to a galvanometer G, The following steps are performed one after another: I. P is pushed rapidly into S II. P is held stationary inside S II, P is withdrawn rapidly from S IV, P is held stationary outside of S During which of these steps does G show a steady zero read Select one: a. II and III only b. II and IV only

Asap plzzz

A wind turbine of the 3-bladed propeller type, having 50% efficiency, generates 2 MWe when the wind speed is 14 m/s. The air density is 1.2 kg/m3. Under these conditions, the linear speed of the blade tips is 98 m/s. a) What is the propeller rotation rate in rpm? What is the propeller shaft torque? b) What is the torque if the turbine above has two instead of three blades?