The first law of thermodynamics states that: A All energy on Earth comes from the sun B Oxidation and reduction reactions are always coupled C Energy cannot be created or destroyed D All chemical reactions have activation energy

What are the two most essential components of any medium, regardless of whether it is liquid or solid, or what type of container is used?

a 4.0 kg object moves at $8.0m/s$ what is its momentum? $32kg\times m/s$ $12kg\times m/s$ $24kg\times m/s$ $48kg\times m/s$

What is the formula for momentum? $p=m+v$ $p=m\times v$ $p=m\div v$ $p=v\div m$

A proton is a subatomic particle carrying a charge equal to but opposite that of an electron. Please select the best answer from the choices provided T F

What liquid property is defined as the spontaneous flow of a liquid into a narrow tube or porous material? capillary action surface tension vapor pressure volality

Problem \#3 A nonuniform horizontal bar of mass 15 kg is supported by two massless wires against gravity. The left wire makes an angle $35^{\circ }$ with the horizontal, and the right wire makes an angle $55^{\circ }$ The bar has a length of 5.0 m The bar is in equilibrium. Find: (a) the tension of the left wire (in N) (1 point); (b) the tension of the right wire (in N) (1 point); (c) the position of the center of mass of the bar (in m), measured from the bar's right end (1 point).

Question 3 of 4 What is quantum mechanics? the unified theory of everything the theory that explains how light behaves under classical physics a method to connect multiple transistors to work in tandem in one circuit the ability to describe the interaction and motion of subatomic particles

Question 17 (4 points) A ball is thrown vertically upwards at $19.6m/s$ For its complete trip (up and back down to the starting position), its average velocity is: 1) $19.6m/s$ 2) $9.80m/s$ 3) $4.90m/s$ 4) $20.1m/s$ 5) not given.

Which type of radiation has the largest mass? Multiple Choice An alpha particle A gamma ray A positron A beta particle

Energy can be defined as __ the capacity to cause movement a measure of disorder the capacity to cause change a measure of calories