Sc (21) , Y (39) , La (57) , Ce (58) , Pr (59) , Nd (60) , Pm (61) , Sm (62) , Eu (63) , Gd (64) , Tb (65) , etc (hoped that helped)
Answer: 1,350cm³
Explanation:
Volume = LWH
= 30 × 15 × 3 = <u>1</u>,<u>350cm</u>³
Answer:
(a) x=157 m
(b) No
Explanation:
Given Data
Mass of proton m=1.67×10⁻²⁷kg
Charge of proton e=1.6×10⁻¹⁹C
Electric field E=3.00×10⁶ N/C
Speed of light c=3×10⁸ m/s
For part (a) distance would proton travel
Apply the third equation of motion

In this case vi=0 m/s and vf=c
so


From the electric force on proton

put this a(acceleration) in Equation (i)
So

For part (b)
No the proton would collide with air molecule
Take the radius of the Earth 6 370 km.Then:
The semimajor axis:a = 6 370 + 360 = 6 730 km
Semiminor axis:b = 6 370 + 180 = 6 550 km
Eccentricity:ε = √ (a2+b2) / a = √ (6 7302+65502) / 6 730 ≈ 1.4
You do 0.5 x 2kg x 4 squared so
0.5x2x16
So the answer is 16