150x2=300 90x2=180
the plane is travelling at 180mph
Answer: A. Gravity is the force that pulls all things together
Given: Wavelength λ = 410 nm convert to Meters m = 4.10 x 10⁻⁷ m
Speed of light c = 3 x 10⁸ m/s
Required: Frequency f = ?
Formula: c = λf
f = c/λ
f = 3 x 10⁸ m/s/4.10 x 10⁻⁷ m
f = 7.32 x 10¹⁴/s or 732 Thz (Terahertz)
Resistance = (voltage) / (current) . . . <== MEMORIZE THIS
Resistance = (91 volts) / (10 Amperes)
Resistance = 9.1 ohms