Answer:
Explanation:
Torque is expressed according to the formula;
F is the force exerted
r is the radius
Given
F = 180N
r = 0.280m
Required
Torque
Substitute into the formula and get torque
Hence the torque exerted is 50.4Nm
<h3><u>Answer;</u></h3>
The period of the wave is <u><em>4 seconds</em></u>
<h3>
<em><u>Explanation;</u></em></h3>
- <em><u>The period of a wave or periodic time is the time taken for one complete oscillation to occur.</u></em> In this case, one complete oscillation occurs when the wave moves from one crest to the next or a trough to the next. <em><u>This takes 4 seconds. Therefore the period is 4 seconds.</u></em>
- <em><u>Frequency on the other hand is the number of oscillations by a wave in one second. Thus, f = 1/T, that is frequency is the reciprocal of periodic time.</u></em>
Answer:
Potential energy is stored energy that is stationary. Kinetic energy is energy in motion
Explanation:
Examples:
A car moving forward down a hill is kinetic energy
A car about to go down a hill after reaching the top is potential energy.
Hope I helped :)
Answer:
Ionic Compound
Explanation:
To identify the type of chemical bond in a molecule, look at the atoms that make up the compound. If there are two nonmetals, it is a covalent bond. If the two atoms are metals, it is a metallic bond. If one atom is a metal and the other is a nonmetal, it is an ionic bond. Ionic compounds are also known as salts. You can identify KBr as an ionic compound because potassium is a metal and a salt.
Hope this helps