3 years ago

Which is a characteristic of a physical change?

Physics

2 answers:

exis [7]3 years ago

6 0

The chemical bonds in the substance are unchanged.

enot [183]3 years ago

3 0

The chemical bonds in the substance are unchanged.

Physical change for example movement, the structure remains the same.

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Which one is it Plz help me :)

Gennadij [26K]

Answer:

5 I think will be none of the above and 6 could be all of the above

8 0

3 years ago

Two ladybugs sit on a rotating disk that is slowing down at a constant rate. The ladybugs are at rest with respect to the surfac

d1i1m1o1n [39]

The two ladybugs have same rotational (angular) speed

Explanation:

The rotational (angular) speed of an object in circular motion is defined as:

$\omega=\frac{\theta}{t}$

where

$\theta$ is the angular displacement

t is the time interval considered

Here we have two ladybugs, which are located at two different distances from the axis. In particular, ladybug 1 is halfway between ladybug 2 and the axis of rotation. However, since they rotate together with the disk, and the disk is a rigid body, every point of the disk cover the same angle $\theta$ in the same time $t$ : this means that every point along the disk has the same angular speed, and therefore the two ladybugs also have the same angular speed.