Answer and Explanation:
(a)The system consists of the spring the block + Earth.
They interact through some forces which are: Gravitational form + normal
forces + spring force.
(b)The two points are:
When the spring has compressed a distance of
When the spring is no longer compressed.
(c)1.53
0
d. 1.75
(e)1.51 
The function of the final velocity is Not a linear one.
Answer:
B
Explanation:
Because of the voltage attached to the iron nail
<span> radio: longitudinal, light: transverse. x rays are produced by voltage and they are more penetrating Gamma Xrays Ultrasound Visible light Infrared Radiowaves. that is the order. colours are different since they absorb part of the colour spectrum & emit the rest </span>
Answer:
6.93 volts
Explanation:
q = magnitude of charge on proton = 1.6 x 10⁻¹⁹ C
r = radius of the orbit = 2.08 x 10⁻¹⁰ m
V = Electric potential due to proton on electron
Electric potential due to proton on electron is given as

Inserting the values

V = 6.93 volts
Answer:
B)8
Explanation:
In the first energy level you can have, at most, 2. Every energy level after that wants to have 8 electrons. Valence electrons I believe.
Hope this helps, have a nice day! (^-^)