Please help

So I know this is a weird question but if you were to send a piece of paper from the Milky Way to the andromeda galaxy how long

Mariana [72]

Answer:

Roughly 4.5 billion years

8 0

3 years ago

g A particle starts moving from the origin of the coordinate system with the initial velocity v(0)=<0,0,2> and acceleratio

mariarad [96]

Answer:

2s

Explanation:

The position function of the motion can be expressed as:

$s = s_0 + v_0t + at^2/2$

where $s_0 =$ is the origin where the particle starts off, $v_0 = m/s$ and a = <1,2,0> m/s2. In the 3-coordinate system it can be written as

$s = =$

For the particle to hit the 2x+y-z=4 plane then its coordinates must meet that criteria

$2t^2/2 +t^2-2t = 4$

$2t^2 - 2t -4 = 0$

$t^2 - t - 2 = 0$

$t= \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}$

$t= \frac{1\pm \sqrt{(-1)^2 - 4*(1)*(-2)}}{2*(1)}$

$t= \frac{1\pm3}{2}$

t = 2 or t = -1

Since t can only be positive we will pick t = 2s

3 0

3 years ago

How does work affect energy between objects so it can cause a change in the form of energy? Work transfers energy. Work changes

IceJOKER [234]

'Doing work' is a way of transferring energy from one object to another, energy is transferred when a force moves through a distance.

If i explain with formula

Work done (J) = Energy transferred (J)

So more energy, more work done bc u transferred more energy to move the object and doing the work. and if you only use a little of energy, the work done also only a little.

4 0

3 years ago

PLS HELP ME<br> How does one stage in a stars life lead to another

Oxana [17]

Just as during formation, when the material contracts, the temperature and pressure increase. This newly generated heat temporarily counteracts the force of gravity, and the outer layers of the star are now pushed outward ( in not sure tho ) I hope this helps

3 0

3 years ago

Read 2 more answers

The moon Phobos orbits Mars

shepuryov [24]

$27.9816 \times 10^{3} s$ is the period of orbit.

<u>Explanation: </u>

The equation that is useful in describing satellites motion is Newton form after Kepler's Third Law. The period of the satellite (T) and the average distance to the central body (R) are related as the following equation:

$\frac{T^{2}}{R^{3}}=\frac{4 \times \pi^{2}}{G \times M_{c e n t r a l}}$