Question

Give short answers:

a) Give the value of one light year.

b) Give the formula to find the density of one object.

c) Name a liquid in which an iron ball sinks.

d) Name two units used to measure distance between

celestial objects.

e) What is the density of gold?​

Answer 1

Answer:

1 light year =

a) 9.461 * 1015

Answer 2

Answer:

1) 9.4607 × 1012 km

2) To find the density of any object, you need to know the Mass (grams) of the object, and its Volume (measured in mL or cm³). Divide the mass by the volume in order to get an object's Density.

3)The liquid in which iron balls sinks is mercury.

4)In astronomy, the most commonly used measures of distance are the light year, parsec and astronomical unit. An astronomical unit (A.U.) is the average distance between the Earth and the Sun, which is about 93 million miles or 150 million kilometers.

5)19.3 g/cm3

Explanation:

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