Answer:
Cohesion describes water's attraction to other water molecules
1) The longer the quarrying goes on the less and less recources we will have, soon leading to no more recources
Answer:
To really 'see' inside the atom and detect fundamental particles we need to go beyond visible light and bounce particles off the smallest building blocks of the Universe to 'observe' them. This session introduces students to the scientific process—how scientific methods and theories are updated and develop as new evidence and information is collected.
Explanation:
Mass = 5 g
volume = 20 cm³
density = mass / volume
therefore:
D = m / V
D = 5 / 20
D = 0.25 g/cm³
Answer:
Frequency = 4.5 × 10¹⁴ Hz
Explanation:
Given data:
Wavelength of light = 670.8 nm (670.8 ×10⁻⁹ m)
Frequency of light = ?
Solution:
Speed of light = wavelength × frequency
Frequency = Speed of light / wavelength
Speed of light = 3 × 10⁸ m/s
Frequency = 3 × 10⁸ m/s / 670.8 ×10⁻⁹ m
Frequency = 0.0045 × 10¹⁷ s⁻¹
Frequency = 4.5 × 10¹⁴s⁻¹
s⁻¹ = Hz
Frequency = 4.5 × 10¹⁴ Hz
