The atomic number of a nucleus descended during which nuclear reactions?

A. Nuclear fission and beta decay (electron emission)

B. Nuclear fusion and alpha decay

C. Nuclear fission and alpha decay

What is the mechanical advantage of a machine that exerts a force of 160 N on an object when a person exerts a force of 20 N on the machine?

When you think of a volcano, you probably think about how they can be very destructive. They are, after all, natural disasters. However, volcanoes can have constructive consequences.

A vector has an x-component of - 309 m and a y-component of 187 m. Find the magnitude of the vector.

A 5.00 kilogram block slides along a horizontal, frictionless surface at 10.0 meters per second. for 4.00 seconds. The magnitude of the blocks momentum is? A) 200 Kg m/s B) 50.0 Kg m/s C) 20.0 Kg m/s D) 12.5 Kg m/s

Select the smallest value from the choices below. (A) 15 x 10-3 (B) 0.15 x 100 (C) 0.00015 x 103 (D) 150 x 10-3 (E) 0.00000015 x 106

A billiards ball B rests on a horizontal surface and is struck by another billiards ball A of the same mass m = 0.2 kg. Ball A is initially moving at 18 m/s and is deflected 28° from its original direction. Assume the collision is elastic.

A model rocket is fired vertically from the ground with a constant acceleration of 45.3 m/s2 for 1.46 s at which time its fuel is exhausted. What is the maximum height (in m) reached by the rocket?

A crude approximation for the x component of velocity in an incompressible laminar boundary layer is a linear variation from u = 0 at the surface (y = 0) to the freestream velocity, U, at the boundary-layer edge (y = δ).

Why did dad leave mom?

Sal drew the electron dot diagram of an aluminum atom as shown. How should Sal correct his diagram? He should add five more dots so that the atom obeys the octet rule. He should add ten more dots so that all thirteen electrons are shown.