Physics

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1. PHYSICS PLEASE HELP!!

   A radioactive nucleus at rest decays into a second nucleus, an electron, and a neutrino. The electron and neutrino are emitted at right angles and have momenta of 9.15×10−23 kg . m/s and 5.19×10−23 kg . m/s, respectively.

2. Kinetic and Thermal energy quick check answers

   1. What is kinetic energy? a) thermal energy b) the energy of motion c) the energy of radiation d) stored energy 2. A fisherman in a boat is drinking hot coffee. The large lake below his boat is full of cold water. Which statement

3. chemistry

   Which step during the dissolving process releases energy? A. Separating solute particles from one another B. Adding solute into the solvent C. Separating solvent particles from one another D. Mixing the particles of solute with

4. History

   Most Anti-federalists believed that farming should be the basis of the U.S. economy. What can you infer was the reason behind this belief? A.)Most Anti-federalists owned textile factories in New England and needed cotton to

1. Science

   A blacksmith strikes a piece of metal with a hammer repeatedly. The metal slowly begins to glow as the temperature increases, and the metal becomes more malleable. Which changes on a microscopic level led to the visible changes in

2. chemistry

   What is true about kinetic energy and the mobility of solid, liquid, and gas particles? The average kinetic energy of the particles decreases as the particles go from a liquid state to a gas state because gas particles do not

3. Science

   Which of the following statements best describes the particles of liquid? a.The particles are far apart and moving fast. b.The particles are close together but moving past each other. c.The particles are far apart and moving

4. Chemistry

   The van der Waals equation for real gases recognizes that (A) the molecular atrractions between paritcles of a gas decreases the pressure exerted by the gas (B) the non-zero volumes of gas particles effectively decrease the amount

1. Social studies

   Part A) How did the completion of the northern pacific railroad lead to the anti-chinese congress? Part B) what do events such as the anti-chinese congress suggest about anti-immagrant sentiment in Washington?

2. chemistry

   Earth's population is about 6.5 billion. Suppose that every person on Earth participates in a process of counting identical particles at the rate of two particles per second. How many years would it take to count 6.0 x 10^23

3. Physics

   The drawing shows three particles far away from any other objects and located on a straight line. The masses of these particles are mA = 363 kg, mB = 517 kg, and mC = 154 kg. Find the magnitude and direction of the net

4. Chemistry

   The state of aggregation of solids can be described as belonging to the following four types: ionic, metallic, covalent network, and molecular. For each of these types of solids, indicate the kinds of particles that occupy the

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