In a full moon the earth is between the sun and moon, but not blocking the sun from the moon (that's a lunar eclipse and only happens sometimes). This means the ground all around you would be illuminated (daytime on the moon). The sun would be illuminating the back of the earth from your perspective and so the earth would appear dark, like a new moon does to us on earth.
Suppose a bug is sitting on a plane. To someone right next to the bug, the bug appears to not move, but a man from the ground would see the bug going as fast as the plane. It is relative, meaning it appears different to two different people.
Use the formula:
p=m*v
p=momentum
m=mass
v=velocity
p=1*2.5
p=2.5
The momentum is 2.5 kg m/s
<h2>
Answer: C) He could have thrown the bag of money sideways, creating a horizontal reaction force on himself.</h2>
Explanation:
According to Newton's third law of motion, when two bodies interact between them, appear equal forces and opposite senses in each of them.
To understand it better:
Each time a body or object exerts a force on a second body or object, it (the second body) will exert a force of equal magnitude and direction but in the opposite direction on the first.
So, if the rich man had pushed the bag of money horizontally opposite of where he was, he could have saved himself.
Answer:
The tension of the string is 41.876 N
Explanation:
Given;
length of the string, L = 2.11 m
mass of the string, m = 19.5 g = 0.0195 kg
frequency of the wave, f = 440 Hz
wavelength, λ = 15.3 cm = 0.153 m
The velocity of the wave is given by;
v = fλ
v = 440 x 0.153
v = 67.32 m/s
Also the velocity of the wave is given by
where;
μ is mass per unit length = 0.0195 / 2.11 = 0.00924 kg/m
T is the tension of the string
T = v²μ
T = (67.32)²(0.00924)
T = 41.876 N
Therefore, the tension of the string is 41.876 N
