Physics, 22.11.2019 07:31 MathWizz5104

Ahot-air balloon is 150 feet above the ground when a motorcycle passes directly beneath it (traveling in a straight line on a horizontal road). the motorcycle is traveling at 40 mph. if the balloon is rising vertically at a rate of 10 ft/sec, what is the rate of change of the distance between the balloon and the motorcycle ten seconds later?

Answers: 1

Show answers

Another question on Physics

Physics, 21.06.2019 22:10

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Answers: 3

Answer

Physics, 22.06.2019 03:00

Arotating space station is said to create “artificial gravity”—a loosely-defined term used for an acceleration that would be crudely similar to gravity. the outer wall of the rotating space station would become a floor for the astronauts, and centripetal acceleration supplied by the floor would allow astronauts to exercise and maintain muscle and bone strength more naturally than in non-rotating space environments. if the space station is 200 m in diameter, what angular velocity would produce an “artificial gravity” of 9.80 m/s^{2} 2 at the rim?

Answers: 3

Answer

Physics, 22.06.2019 11:20

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)

Answers: 3

Answer

Physics, 22.06.2019 11:20

Sound is a disturbance that travels through a medium as a

Answers: 1

Answer

You know the right answer?

Ahot-air balloon is 150 feet above the ground when a motorcycle passes directly beneath it (travelin...

Questions

Physics, 06.06.2021 14:00

What are the symptoms of hepatitis 'b'...