Answer:
Change in momentum = 60kgm/s.
Explanation:
<u>Given the following data;</u>
Mass, m = 12kg
Initial velocity, u = 9m/s
Final velocity, v = 14m/s
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
To find the change in momentum;
Mathematically, change in momentum is given by the formula
Substituting into the equation, we have;
<em>Change in momentum = 60kgm/s.</em>
Magnetic forces act at a distance. The opposites attract and pull each other closer
Answer:
The answer to the questions is;
In terms of standing waves, the listener moves from a location with high amplitude to one with lower amplitude or vibration (anti-node to node)
The distance 4.1 cm is equivalent to λ/4
Explanation:
For standing waves we have is a stationary wave comprising of two opposite direction moving waves that have equal amplitude and frequency, resulting in the superimposition of the waves. As such certain points are fixed along the wave path that is the peaks amplitude of the wave oscillation is constant at a particular point. A node occurring at a point and an anti-node occurring at another fixed point
When the listener moves 4.1 cm he or she has left the anti-node to the node hence the faintness of the sound
The distance from the node to the anti-node is 1/4 wavelength, or 1/4×λ
Therefore 4.1 cm is λ/4
A person is attracted towards the center of Earth by a 440 N gravitational force. The force with which Earth is attracted toward the person is <u>440 N</u>.
<u><em>Reason</em></u><em>: If you were to consider Newton's third law, it says for every action, there is an equal and opposite reaction. That means if the earth exerts a 440N force on the human, then the human will exert a 440N force on the planet.</em>
<em />
p.s. Newton's three laws would be very helpful to know for these sorts of conceptual questions that involve forces
Answer:
Diagrammatic representation