an empty propane tank dropped from a hot air balloon hits the ground with a speed of 143.8 m/s. from what height was the tank released?

Answers

Answer 1

Answer: What you know:
Vi=0m/s
Vf=143.8m/s
A=-9.8m/s
d=???
Use the equation Vf^2=Vi^2+2A(d)
Rearrange to isolate d: d=Vf^2/2A
d=(143.8)^2/2(-9.8)
d=20678.4/-19.6
d=-1055m
The tank was released from a height of 1055m

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a. True
b. False

Answers

b. False
Endothermic reactions absorb heat.

how do you describe and determine the direction of the magnetic field produced by an electric current?

Answers

Answer:

the magnet or electric current produces a magnetic field

Explanation:

this magnetic field can be visualized as a pattern of a circular field lines surrounding a wire. hall probes can determine the magnitude of the field

hope it helps you

Draw the Lewis dot Structure for the molecule C2H6

Answers

Answer:

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Answers

The correct answer to the question above is that the magician is seeking the wavelength of the standing wave. The part of a standing sound wave, which is its wavelength, the magician is seeking when playing a musical note of a specific pitch.

That is false. I just took the test and it is not the wavelength. The correct answer is antinode NOT wavelength.

In a given circuit, the supplied voltage is 1.5 volts. One resistor is 3 ohms and the other is 2 ohms. Use Ohm's law to determine the current in the circuit.0.3 amps
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The purpose of a fuse or circuit breaker is _____.
to speed up the current
to slow down the current
to stop current that is flowing too fast
to stop current that is flowing too slow

Answers

(1) The value of the current depends upon how they are connected.

When placed in series:

The resistance would be: 3+2=5ohms.

Ohm's law is given as:

$I=(V)/(R)$

⇒ $I=(1.5)/(5)=3 ampere$

When placed in parallel:

The resistance would be: $\frac{3{*}2}{3+2}=1.2 ohms$

Now, the current would be:

$I=(1.5)/(1.2)=1.25 ampere$

(2) The purpose of a fuse or circuit breaker is to stop current that is flowing too fast.

A fuse is wire that have low melting point when placed in a circuit. When current is moving too fast i.e. in case of over current, the heat produced melts this wire which further breaks the circuit. Similarly a circuit breaker is a switch which opens up in case of over flow of current.

Thus, a circuit breaker is then used to to stop current that is flowing too fast.

No that other answer is not right they messed up and the right answer would be 0.3 I hope that this helps

Which describes an image that a concave mirror can make?

Answers

An image that a concave mirror can make is that it can form a real image that is projected out in front of the mirror. A concave mirror is a mirror that is curved inward in the middle. Using the mirror equation, you can deal with concave mirrors. It's like you're looking into a cave when try to look in a concave mirror.

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