Answer:
Three lunar eclipses every year.
Explanation:
A lunar eclipse only occurs during a full Moon, when the Sun, Earth and Moon are all aligned. But despite the Moon only taking 29.5 days to orbit Earth and complete a cycle from full Moon to full Moon, there are only on average about three lunar eclipses every year.
Answer:
a property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity
Explanation:
Formula:
Momentum: Mass x Velocity
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Answer:
They are equal.
Explanation:
Newton's 3rd Law tells is that the forces of an action/reaction pair are equal and opposite. Since F_truck on car and F_car on truck are an action/reaction pair, they are equal no matter their state of movement before the collision.
Answer:
The value is 
Explanation:
From the question we are told that
The length of the string is 
The mass is 
The frequency produced at fourth harmonic vibration(i.e n =4 ) is 
Generally the wavelength of the string is mathematically represented as
=> 
=>
