Ahot air balloon lifts a gondola full of people off the ground. what is the mass of the gondola if the force on the balloon is 1200 n and it has an upward acceleration of 2.4 m/s2 ? a 51.0 kg b 98.4 kg c 162.2 kg d 293.9 kg

The correct answer is C.

Explanation:

Given, net force, F = 1200 N

Upward acceleration = 2.4 m/s²

Downward acceleration= Acceleration due to gravity= 9.8 m/s²

Net acceleration, a= 9.8-2.4 = 7.4 m/s²

Force on an object of mass m is given by relation,

F= ma

∴ Mass of the gondola =

Substituting the values,

M=

=162.2 kg

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods