Explain the process of a nuclear fusion reaction using hydrogen. Include the particles that are used to start and maintain the chain reaction and in which steps the energy is released.

Which statement is true for particles of the medium of an earthquake P-wave?

25. Which type of skin cancer develops from the youngest epidermal cells

A spring has a constant of 20 n/m. how far will it extend when the following forces are applied. (assume the spring does not pass its elastic limit) a) 10 N b) 50 N c) 0.2 KN

What are the first four resonant frequencies of a 10-cm long tube with (a) Both ends open? (b) Both ends closed? (c) One end open and one end closed?

What does it mean to say that a material has a high specific heat?

A squirrel sitting on the ground starts to run with an acceleration of 5.1 m/s 2. How fast is the squirrel going after 0.25 seconds? A. 20.4 m/s B. 1.28 m/s C. 0.49 m/s D. 3.1 m/s

Describe how the competition between invasive and native species might affect a food web

Which vector should be negative? any vector whose magnitude is less than 1 a displacement in the direction North any vector whose magnitude is greater than 1 the velocity of a falling object

Acceleration is a scalar quantity true or false

Find a numerical value for rhoearth, the average density of the earth in kilograms per cubic meter. Use 6378km for the radius of the earth, G=6.67*10-11m3 / (kg⋅s2), and a value of g at the surface of 9.80m/s2.