21. Which statement best describes the difference between strong nuclear forces and weak nuclear forces? (2 points)
O Weak nuclear forces are involved when certain types of
atoms break down. Strong nuclear forces are responsible for
holding atoms' nucleus together.
Weak nuclear forces hold bonds between atoms together.
Strong nuclear forces hold together the nucleus of an atom.
Strong nuclear bonds prevent atoms from falling apart. Weak
nuclear bonds prevent compounds from falling apart.
O Strong nuclear forces are involved in breaking electrons from
their shells. Weak nuclear forces hold protons in the nucleus.

The answer is mean don't know

Jenny and fred both play a long note on their trombones. a stationary observer hears the sound increasing and decreasing repeatedly in loudness. which of these must be true? the sound waves from the two trombones have slightly different frequencies.the sound waves from the two trombones have the same frequency.the sound waves from the two trombones have slightly different amplitudes.the sound waves from the two trombones have the same wavelength.the sound waves from the two trombones have slightly different velocities.  lolthe answer is          the sound waves from the two trombones have slightly different frequencies.

Projectile motion is a form of motion experienced by an object or projectile that is thrown near the earth's surface and moves along a curve path under the action of gravity.