Julie is cycling at a speed of 3.4 meters/second. if the combined mass of the bicycle and julie is 30 kilograms, what is the kinetic energy?

The kinetic energy of the Julie is 173.4 J

Explanation:

Kinetic energy is defined as the energy which is possessed due to its motion.

It is also defined as the half of the product of mass of the object and square of the velocity of the object.

Mathematically,

where,

= kinetic energy of Julie

m = mass of the Julie = 30 kg

v = velocity of Julie = 3.4 m/s

Putting values in above equation, we get:

Hence, the kinetic energy of the Julie is 173.4 J

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.