4 years ago

Help I don't understand!!

Physics

1 answer:

Setler79 [48]4 years ago

8 0

Answer: The lead is more dense :)

Explanation:

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If we had sent a radio signal to an advanced civilization in 2006 which is located in the zeta reticuli star system approximatel

SashulF [63]

Answer: 2045

Explanation:

Given

We had sent a radio signal to advance civilization in 2006 which is 39 light-years away i.e. time taken by light to reach reticuli star system is 39 years.

So, it will arrive the destination in the year $2006+39=2045$

7 0

3 years ago

A titanium bicycle frame displaces 0.314 l of water and has a mass of 1.41 kg. what is the density of the titanium in g>cm3 ?

Kobotan [32]

The density of an object is the ratio of its mass over the volume. This translates to the amount of substance present in a certain space and can mathematically be expressed as,

density = mass / volume

In this item, we are given that the object of mass 1.41 kg is able to displace 0.314 L of liquid. The volume of water displaced is also the volume of the object. Hence,
density = 1.41 kg / 0.314 L = 4.49 kg/L

Then, we convert the calculated volume of g/mL.
density = (4.49 kg/L)(1 L / 1000 mL)(1000 g/1 kg)
<em> density = 4.49 g/mL</em>

6 0

4 years ago

Read 2 more answers

The magnetic field due to a utility wire is 0.10 mT when you are at a distance of 10 meters from it. What current (in Amperes) f

ale4655 [162]

Answer:

I = 5000 A

Explanation:

We will use Ampere's Law to calculate the current:

$B = \frac{\mu I}{2\pi r}\\\\$