Which of the following is true of the inner core of the earth? a. it is the consistency of asphalt. b. the average temperature is 4000 degrees. c. it is so hot that the elements vibrate in place. d. the lightest elements on the planet can be found there

The inner core of the earth is so hot that the elements vibrate in place.

Option C

Explanation:

The inner core of earth is the innermost geological layer. Basically it is solid ball having a radius of about 1220 kilometres (760 miles) that is the 20% of Earth's total radius and 70% of the moon's radius. The ''average temperature in the inner core'' of the earth is estimated to be about 5700 k or 5430 degree Celsius.

Earth's core is hot or we can say the hottest part of the planet. As we all know, heat in any particular body is produced by the atoms/molecules vibrating in their place. More the vibrations are, more is the heat. Lesser the vibrations are, lesser is the heat. The vibrations if all elements ceases to 0 at 0K, which is approximately -273.5 degree celsius. Hence option C is correct, as core is extremely hot, and due to heat, elements' atoms/molecules vibrate in place.

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.