Hubble noticed that the galaxies were moving away from us, which meant the universe was expanding.

This is why constellations change over time. In some years, the Big Dipper won't actually look like a dipper anymore.

5 0

3 years ago

HELP PLEASE<br>I need help on these 2 questions

Olegator [25]

I will be brief

5. There is no displacement as it didn't move

6. Time cannot go backwards so it cannot be negative

8 0

4 years ago

[3 points] Question: Consider a pendulum made from a uniform, solid rod of mass M and length L attached to a hoop of mass M and

aliina [53]

Answer:

I= $\frac{4}{3}ML^2+2MR^2+2MRL$

Explanation:

We are given that

Mass of rod=M

Length of rod=L

Mass of hoop=M

Radius of hoop=R

We have to find the moment of inertia I of the pendulum about pivot depicted at the left end of the slid rod.

Moment of inertia of rod about center of mass= $\frac{1}{12}ML^2$

Moment of inertia of hoop about center of mass= $MR^2$

Moment of inertia of the pendulum about the pivot left end,I= $\frac{1}{12}ML^2+M(\frac{L}{2})^2+MR^2+M(L+R)^2$

Moment of inertia of the pendulum about the pivot left end,I= $\frac{1}{12}ML^2+\frac{1}{4}ML^2+MR^2+MR^2+ML^2+2MRL$

Moment of inertia of the pendulum about the pivot left end,I= $\frac{1+3+12}{12}ML^2+2MR^2+2MLR$

Moment of inertia of the pendulum about the pivot left end,I= $\frac{16}{12}ML^2+2MR^2+2MRL$

Moment of inertia of the pendulum about the pivot left end,I= $\frac{4}{3}ML^2+2MR^2+2MRL$

8 0

4 years ago

Read 2 more answers

The strength of an electrical field decreases as you move farther from the source.<br> True or False

slamgirl [31]

It is True it decreases

4 0

3 years ago

Read 2 more answers