Cientists make observations of an unknown object in space. The table shows their data. Question Observation
What is the diameter of the object? 465 kilometers
What is the distance of the object from the Sun? 2.36 astronomical units (AU)
What is the surface temperature of the object? −73°C
What are the visible surface features of the object? numerous craters
What is the composition of the object? primarily silicate rocks and metals

What object are the scientists observing, and what can they infer from their observations?
A.
The object is a comet. It can be inferred that it is rapidly spinning due to the large diameter of the object.

B.
The object is a comet. It can be inferred that it is mostly black due to chemical compounds frozen on the surface.

C.
The object is an asteroid. It can be inferred that it is volcanically active due to the presence of craters on the object's surface.

D.
The object is an asteroid. It can be inferred that it is a light gray color due to the presence of silicate rocks in the comp

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit

Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car