How can the newly discovered form of matter time crystals, how can they vibrate without any outside force? doesn't that defy the currently accepted laws of physics?

A new kind of matter known as a “time crystal” has been created by two teams of scientists in a feat once considered impossible.

Normal crystals, anything from diamonds to snowflakes, have atoms arranged in a repeating three-dimensional lattice.

However the atoms in time crystals repeat a pattern across the fourth dimension, time.

This essentially means they should oscillate forever without any external influence.

answer; ///i believe that the correct answer is (carbon); good luck

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50