Answer:
sry abt cuz I don't know the answer
have a great day
Answer:
True
Explanation:
Electronegativity difference of less than 0.4 characterized covalent bonds. For two atoms with an electronegativity difference of between 0.4 and 2.0, a polar covalent bond is formed-one that is neither ionic nor totally covalent.
Answer:
160 km
Explanation:
g = 9.8 m/s^2, g' = 9.3 m/s^2
Let h be the height from ocean level.
Use the formula for acceleration due to gravity at height.
g' = g (1 - 2h/R)
The radius of earth is 6400 km
9.3 = 9.8 ( 1 - 2 H / R)
0.05 = 2 h/R
h = 0.05 × 6400 / 2 = 160 km
Answer:
1.2×10⁶ Hz
Explanation:
Applying,
v = λf............. Equation 1
Where v = speed of wave, λ = wavelength, f = frequency.
make f the subject of the equation
f = v/λ............... Equation 2
From the question,
Given: v = 3.0×10⁸ m/s, λ = 2.5×10² m
Substitute these values into equation 2
f = 3.0×10⁸/2.5×10²
f = 1.2×10⁶ Hz