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horsena [70]
2 years ago
15

A human-operated spaceship reaches the moon in 3 days. The moon is about 386,400 km from Earth. Mars, our closest planetary neig

hbor, is, at its closest, about 140 times farther away from us than the moon if Mars stays in place. Assuming a very simple model of the solar system, about how long would it take that same spaceship to reach Mars?(1 point) about 22.5 years about 1 year about 2.5 years about 7.5 years
Physics
1 answer:
krok68 [10]2 years ago
8 0

Answer:

About 1 year.

Explanation:

Since the spacecraft travels the 386,400 kilometers of distance between the Earth and the Moon in 3 days, and the planet Mars is 140 times further from the Earth than the Moon, to obtain the time it will take for the same spacecraft to reach Mars must perform the following calculation:

140 x 3 = 420 days

If a year has 365 days, the travel time that said spacecraft would take to reach Mars would be just under 1 year and 2 months.

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1 year ago
Two power lines run parallel for a distance of 222 m and are separated by a distance of 40.0 cm. if the current in each of the t
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1) Magnitude of the force:

The magnetic field generated by a current-carrying wire is
B= \frac{\mu_0I}{2 \pi r}
where
\mu_0 is the vacuum permeability
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r is the distance at which the field is calculated

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B= \frac{\mu_0 I}{2 \pi r}= \frac{(4 \pi \cdot 10^{-7} N/A^2)(135 A) }{2 \pi (0.40 m)}=6.75 \cdot 10^{-5} T

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F=ILB=(135 A)(222 m)(6.75 \cdot 10^{-5}T)=2.03 N

2) direction of the force: 
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Now let's apply the right-hand rule to the wire on the right:
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Answer:

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Explanation:

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