Answer:
Vibrations are sent through the air to your ears.
Explanation:
Sound is a form of energy that is transmitted in compression and rare factions. Sound is a mechanical wave. All mechanical waves require a material medium for propagation.
The material medium for the propagation of sound is air. When the sound is produced by the speakers, the molecules of air are set into vibration and this vibration carries the sound from the speaker to your ears.
Answer:
Newton's second law says that when an unbalanced force is applied to a mass it causes it to accelerate
Explanation:
Answer:
The speed of the 8-ball is 2.125 m/s after the collision.
Explanation:
<u>Law Of Conservation Of Linear Momentum</u>
The total momentum of a system of masses is conserved unless an external force is applied. The momentum of a body with mass m and velocity v is calculated as follows:
P=mv
If we have a system of masses, then the total momentum is the sum of all the individual momentums:
When a collision occurs, the velocities change to v' and the final momentum is:
In a system of two masses, the law of conservation of linear momentum is simplified to:
The m1=0.16 Kg 8-ball is initially at rest v1=0. It is hit by an m2=0.17 Kg cue ball that was moving at v2=2 m/s.
After the collision, the cue ball comes to rest v2'=0. It's required to find the final speed v1' after the collision.
The above equation is solved for v1':
The speed of the 8-ball is 2.125 m/s after the collision.
Answer:
Pressure = 1400 pascals
Explanation:
The formula to measure pressure is Pressure equals force in pounds over the area in square inch. The written abbreviated formula is P= F/A. By looking at the formula one can see that top obtain the pressure on an object, one must divide the the force by the area of an object.
P = 140/0.1
P = 1400
A bit vague since it's not clear whether the applied force is in the same direction as the box's displacement. But let's assume it is. Then the work done is:
W = Fd
W = work, F = force, d = displacement
Given values:
F = 10.0N, d = 0.9m
Plug in and solve for W:
W = 10.0(0.9)
W = 9J