Given a selection of ionizing particles at the same energy, which is biologically most harmful?

Select one:

a. alpha particles (helium nuclei)

b. X-rays

c. Beta particles (electrons)

d. protons

e. slow neutrons

Hydrogen can be created by water. If the activation energy is reduced, hydrogen can be produced with a renewable energy source. This renewable energy source is.

Which substance is used to remove rust from metal? A: lye (NaOH) B: hydrochloric acid (HCl) C: ammonia (NH3) D: sulfuric acid (H2SO4)

A certain string on a piano is tuned to produce middle c (f = 261.63 hz) by carefully adjusting the tension in the string. for a fixed wavelength, what is the frequency when this tension is tripled?

A liquid mixture containing 40.0 wt% (by mass) benzene (B) and 60.0 wt% toluene (T) is fed to a distillation column. A product stream leaving the top of the column (the overhead product) contains 90.

What is an example of a wheel and an axle

IF you are skateboarding and push back with one leg, and, as a result the skateboard moves forward. Which law of motion is being described

Explain why astronomers long ago believed that space must be filled with some kind of substance (the "aether") instead of the vacuum we know it is today.

Which of the following is an example of the electrostatic force acting in an atom? A. An electron repelling a proton B. A proton repelling another proton C. A neutron repelling an electron D. A neutron repelling another neutron

What are the correct units for energy and work

At the instant a current of 0.40 A is flowing through a coil of wire, the energy stored in its magnetic field is 9.5 ✕ 10-3 J. What is the self-inductance of the coil (in H) ?