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- Two very large cruise ships each have a mass of 415 000 tonnes. If they were docked side by side, 1.0 m apart, their centres would be 60 m apart. What is the force of gravitational attraction putting them together? (Hint: 1 tonne = 1000 kg)
If an object has a mass of 47 kg and it is moved 27 meters in 60 seconds, how
much power was used
A 12m lever is used to lift 1000N load fixed at one end 2m from the fulcrum.what is the effort required to lift the load exerted at the other end.assume efficiency is 100%
The main scale reading is 6 cm and vernier coincidence is 3 and negative zero error is 0.01 cm. Then calculate the correct reading.
The speed and wavelength of coastal water waves are 4.0 m/s and 6.0 m respectively. When the waves enter a shallower region, the speed decreases to 1.7 m/s. What is the wavelength in the shallower region?
An automobile is approaching you at a speed of 50.0 km/h and sounding its horn. The fundamental frequency of the horn sounds to you like 266 Hz. If the speed of sound is 335 m/s, the real fundamental frequency of the horn is ___Hz. (Give your answer with the correct number of sig digs and do not include units)
An automobile is approaching you at a speed of 90.0 km/h and sounding its horn. The fundamental frequency of the horn sounds to you like 268 Hz. If the real fundamental frequency of the horn is 248 Hz, the speed of sound is ___m/s. (Give your answer with the correct number of sig digs and do not include units.
A fire engine is being driven away from you at a speed of 15.4 m/s. One of the notes in its siren sequence has a fundamental frequency of 244 Hz. If the speed of sound is 338 m/s, the fundamental frequency of that particular note will seem to you to be ___Hz. (Give your answer with the correct number of sig digs and do not include units)
The speed of sound where a tuning fork of frequency 262 Hz produces the third resonance position above a closed air column that is 1.59 m in length is ___m/s. (Give your answer with the correct number of sig digs and do not include units in your answer)
The speed of sound is 340 m/s where a tuning fork produces the second resonance position above a closed air column that is 49.8 cm in length. The frequency of the tuning fork is ___ Hz. (Give your answer with the correct number of sig digs and do not include units in your answer)
At what angle to the vertical must a motorcyclist lean so as to negotiate a bend with a radius of 280m at a speed of 180km/h.
