Why does the number of dwarf planets recognized by astronomers in the solar system sometimes increase?

A trainer is teaching a seal how to balance a ball on its nose. At the start, he gives the seal a fish for approaching the ball, then for nudging at the ball, and finally for holding the ball on its nose. The trainer is using:

How ar intrusive igneous bodies classified A.) by their size B.) by their shape C.) by their relation ship to the surrounding rock layers D.) all of the above the largest intrusive igneous body is called A.) stock B.) batholith C.) dike D.

Your go cart breaks down right before the end of a race so you have to push it over the finish line the go cart has a mass of 85 kg

SI unit for electrical current

A 100 kg object and a 10 kg object are dropped simultaneously in a vacuum. Which of the following statements is true? Both objects will accelerate at 9.8 m/s2 The 100 kg object will accelerate faster than the 10 kg object.

Arches National Park, Utah Constructive or Desructive force

A mosquito of mass 0.15 mg is found to be flying at a speed of 50 cm/s with an uncertainty of 0.5 mm/s. (a) How precisely may its position be known? (b) Does this inherent uncertainty present any hindrance to the application of classical mechanics?

A Carnot engine has a power output of 148 kW. The engine operates between two reservoirs at 17◦C and 727◦C. How much thermal energy is absorbed each hour? Answer in units of J.

Which of the following tests is NOT a part of the Fitness Assessment?

A tuba creates a 4th harmonic of frequency 116.5 Hz. When the first valve is pushed, it opens an extra bit of tubing 0.721 m long. What is the new frequency of the 4th harmonic? (Hint : Find the original length.)