False. That description fits the wave's 'frequency'.
It has nothing to do with refraction.
Answer:
A. Light acts as particles, causing electrons on the surface it strikes to be destroyed.
Explanation:
- The photoelectric effect is a phenomenon that occurs when light shined onto a metal surface causes the ejection of electrons from that metal. It was observed that only certain frequencies of light are able to cause the ejection of electrons.
Complete Question:
The momentum of an object is determined to be 7.2 × 10-3 kg⋅m/s. Express this quantity as provided or use any equivalent unit. (Note: 1 kg = 1000 g).
Answer:
7.2 gm/s.
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
Given the following data;
Momentum = 7.2 * 10^-3 kgm/s
1 kg = 1000 g
Substituting the unit in kilograms with grams, we have;
Momentum = 7.2 * 10^-3 * 1000 gm/s
<em>Momentum = 7.2 gm/s. </em>
Large glowing balls of plasma held together by their own gravity are called stars
Answer:
ac = 27.22 m/s
Explanation:
ac=v^2/r
m=2500kg
v=35 m/s
Fc=mv^2/r
I'm not sure why you would need mass but I will solve for Fc aswell
Ac=35^2/45 = 1225/45= 27.22 m/s
Fc= 2500(27.22)=68050 N