The maximum gauge pressure in a hydraulic lift is 25 atm. if the diameter of the output piston is 18 cm, what is the largest mass vehicle it can lift?

Density of salty water as compared to the density of pure water is(a) is less(b) is always equal(c) is always more(d) may be less or more

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?