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The characteristic of sound that would best explain the series of echoes you are hearing would be reverberation. It is created when a sound wave is being reflected to the surfaces causing it to have a many reflection building up and decaying as these waves are being absorbed bu the surfaces in the area which could be tables, chairs, people or the air. Reverberation is the group of the reflected sounds in an enclosed area.
Answer:
Explanation:
The standard unit of momentum Is kgm/s
And momentum is the product of mass and velocity
Then,
Momentum = mass × velocity
P = mv
Where
m is mass in kg
v is velocity in m/s
Now,
Given that,
M = 31.8mg
1mg = 10^-3g
So, m = 31.8 × 10^-3g
Also, 1000g = 1kg → 1g = 10^-3 kg
So,
m = 31.8 × 10^-3 × 10^-3kg
m = 31.8 × 10^-6 kg
v = 2.53mi/hr
1mile = 1609.34 m
1 hour = 3600seconds
Then,
v = 2.53 × 1609.34m/ 3600s
v = 1.13 m/s
So, momentum is given as
P = mv
P = 31.8 × 10^-6 × 1.13
P = 3.597 × 10^-5 kgm/s
Answer:
58.5 deg
Explanation:
= mass of the pig toy = 0.30 kg
= speed of the toy = 2 m/s
= radius of the circle = 0.25 m
= Angle of the string with the vertical = ?
= Tension force in the string
Using equilibrium of force in vertical direction
eq-1
Along the horizontal direction, the component of tension force provides the necessary centripetal force, hence
eq-2
Dividing eq-2 by eq-1
= 58.5 deg
The answer to which type of bond shows two or more atoms baring electrons is B. Covalent
