The answer is A.
p=m/v
p= 240/60
p= 4 g/cm^3
Answer:
B and C!
Explanation:
I just did it on edge. I hope this helps!
Thermometer there's others you can use but i know that's one of them
Answer:
a)
b)
c)
d)
m
e)λ=∞
Explanation:
De Broglie discovered that an electron or other mass particles can have a wavelength associated, and that wavelength (λ) is:

with h the Plank's constant (
) and P the momentum of the object that is mass (m) times velocity (v).
a)

b)

c)

d)
m
e) 
λ=∞
It depends on what type of solid