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steposvetlana [31]

3 years ago

10

Stephanie lives in California,and her cousin Thomas lives in France. which coordinate system would be most useful if the two wan

ted to observe the same meteor shower and discuss the observations over online chat as they're making them?

1 answer:

qwelly [4]3 years ago

8 0

Answer:

Equatorial

Explanation:

Your welcomee

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Calculate the power of a person that does 8kJ of work in 4 hours

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$\text{Power,}~ P = \dfrac{\text{Work done}}{\text{Time}}\\\\\\~~~~~~~~~~~~~=\dfrac{8 \times 1000~J}{4 \times 3600~ s}\\\\\\~~~~~~~~~~~~~~=\dfrac{80}{144}\\\\\\~~~~~~~~~~~~~~=0.56~ W$

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The total charge that an automobile battery can supply without being recharged is given in terms of Ampere-hours. A typical 12-V

anyanavicka [17]

Answer:

7 hours

Explanation:

The total charge contained in the battery is

$Q = 49 A \cdot h$

And this is a charge, since it is a current multiplied by a time:

$Q=It$

The current drawn by each headlight (which is the charge consumed per second) is

$I=3.5 A$

Since we have two headlight, the total current drawn is

$I=3.5 \cdot 2 = 7 A$

Therefore, the total charge consumed by the two headlights each hour is

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So, the time before the battery is dead is

$t=\frac{Q}{q}=\frac{49 Ah}{7Ah}=7 h$

5 0

3 years ago