Write a paragraph that explains why hot-air ballons float

Answers

Answer 1

Answer: First, they float because of gravity and the air that is in the hot air balloon.The operator of the hot air balloon can steer the hot air balloon so you cam get to where you want to go.

I hope this is good enough.And i hope this helps.

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How is Ohm's Law related to house fires?

Answers

I got my bachelor's degree in Electrical Engineering in 1973, and
I have worked with electricity and electronics during the 43 years
since then. Maybe I'm missing something obvious, but I can't think
of any connection between Ohm's Law and house fires. I'm really sorry.

How global warming causes sea turtles to lose the place for laying eggs?

Answers

The ice melts which is where turtles lay eggs

global warming causes sea turtle to do that the place was laying eggs because of the warm areas because the turtles are used to certain temperature in that certain areas so there

a classmate states that continental drift could not be possible because it would take far too much force to move tectonic plates. describe the hypothesis scientists use to explain the movement of tectonic plates. which hypothesis do money scientist things may explain the great force needed to move plates

Answers

Seafloor Spreading is how the plates move. It is a process in which new oceanic crust (ocean floor) is created from the hot magma that comes to the surface. The magma is cooled by the water. The new floor pushes outward and moves the old floor. This is the force that causes the plates to shift. Harry Hess came up with this theory. John Tuzo Wilson combined Alfred Wegener's theory of continental drift and Harry Hess's theory of seafloor spreading to create a reasonable explanation for how the plates could have moved then created his own theory of plate tectonics.

The reason a filter system is used in this experiment is to separate and collect in the reaction.

Answers

Answer: the solid copper

Explanation: 2020 edge

Answer:

the solid copper.

Explanation:

correct on edge 2021

when an incandescent light bulb is turned on, its thin wire filament heats up quickly. as the temperature of this wire filament increases, its electrical resistance...

Answers

Well, we usually assume that the resistance of a circuit component
is constant and doesn't change. But the truth is that for anything
that conducts current, its resistance always increases somewhat
when it warms up.

For things like light bulbs, electric toasters, space heaters, electric
stove burners, the heat coils in a blow-dryer ... anything that's
designed to be really hot when it's doing its job ... the resistance
of those things increases significantly when they come up to their
operating temperatures.

Hello user!

here is it answer.....

Because the lamp filament is physically very small and dissipates a relatively large amount of power (say, 60W for a typical incandescent bulb), while the conductors which feed it are relatively large and of negligible resistance, so they dissipate very little power, for a relatively large conductor area. How hot a component gets from resistive heating is proportional to its power dissipation, and inversely proportional to its area/size.

Thus if you dissipate, say 60W of power in a tiny lamp filament, it will get hot enough to become (surprise !!) incandescent, while the conductors which supply it (which dissipate perhaps a fraction of a watt for many feet of conductor length) will experience no significant temperature rise.

In fact, applicable electrical codes mandate that circuit conductors be sized large enough and provided with appropriate overcurrent protection, so that no significant conductor heating can take place.

A motorcyclist changes the velocity of his bike from 20.0 meters/second to 35.0 meters/second under a constant acceleration of 4.00 meters/second2. How long does it take the bike to reach the final velocity?

Answers

35-20 = 15m/s difference
15/4 = 3.75 seconds

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According to the graph of displacement vs. time, what is the object's displacement at time = 60 s?