Question: In a closed system, no mass may be transferred in or out of the system boundaries. The system always contains the same amount of matter, but heat and work can be exchanged across the boundary of the system. Whether a system can exchange heat, work, or both is dependent on the property of its boundary. can work be done in a closed system

Answer: yes

Question: This clause, sometimes referred to as the Guarantee Clause, has long been at the forefront of the debate about the rights of citizens vis-a-vis the government. The Guarantee Clause mandates that all U.S. states must be grounded in republican principles such as the consent of the governed. By ensuring that all states must have the same basic republican philosophy, the Guarantee Clause is one of several portions of the Constitution which mandates symmetric federalism between the states. each state must have a republican form of government

Answer: yes

Question: The two equal sides are called the legs and the third side is called the base of the triangle. The other dimensions of the triangle, such as its height, area, and perimeter, can be calculated by simple formulas from the lengths of the legs and base. Every isosceles triangle has an axis of symmetry along the perpendicular bisector of its base. The two angles opposite the legs are equal and are always acute, so the classification of the triangle as acute, right, or obtuse depends only on the angle between its two legs. do all isosceles triangles have a right angle

Answer:
no