- 3 A Motorboat Requires 60 Kw To Move At The Constant Velocity Of 4 5 M S How Much Resistive Force Does The Water Exert 1 (43.34 KiB) Viewed 45 times
3. A motorboat requires 60 kW to move at the constant velocity of 4.5 m/s. How much resistive force does the water exert
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3. A motorboat requires 60 kW to move at the constant velocity of 4.5 m/s. How much resistive force does the water exert
3. A motorboat requires 60 kW to move at the constant velocity of 4.5 m/s. How much resistive force does the water exert on the boat at this velocity? (6 marks) 4. Sound waves are longitudinal waves in air. The speed of sound depends on temperature; at 20°C it is 344 m sł. What is the wavelength of a sound wave in air at 20°C if the frequency is 262 Hz (the approximate frequency of middle C on a piano)? (6 marks)