C. The WAVElength is the measurement of how far one WAVE is. Remember to think of a wave in physics as one complete cycle, which is a full motion hitting the crest and the trough. It can be measured by the crests, the troughs, or the origin. Just make sure if you're doing it at the origin that you're counting one FULL cycle.
A. power is the rate at which work is accomplished.
If we look at the power equation: Power = energy ÷ time
we can see that energy ÷ time is a rate of work because the energy is a change in energy and a change in energy is equal to work.
Question: calculate their densties in Si unit.
200mg,0.0004m³
Answer:
0.5 kg/m³
Explanation:
Applying,
D = m/V........................ Equation 1
Where D = density, m = mass, V = volume.
From the question,
Given: m = 200 mg = (200/1000000) kg = 2.0×10⁻⁴ kg, V = 0.0004 m³ = 4.0×10⁻⁴ m³
Substitute these values into equation 1
D = (2.0×10⁻⁴ kg)/(4.0×10⁻⁴)
D = 2/4
D = 0.5 kg/m³
Hence the density in S.I unit is 0.5 kg/m³
Classification<span> of the </span>Elements<span>. The next thing in our review is to </span>classify<span> the </span>elements<span> into three groups. These three groups are: metals, nonmetals, and inert gases. Let's look at where these groups are located on the periodic table and correlate them with the ability to lose and gain electrons.</span>