Answer:
b.
because hsuehwbwnowbwbww9whw
Answer:
Rachel(2.5,0)
ball(6.5,4.7)
b.R=10.15m/s, 27.57deg
Explanation:
The reference angle of Rachel is 0
resolving rachel's speed to the horizontal, we have
Ux=2.5cos0
Ux=2.5m/s
resolving rachel's speed to the vertical we have,
Uy=2.5sin0
Uy=0
for the ball
resolving the speed to its horizontal component
Ux=8cos36
Ux=6.5m/s
Uy=8sin36
Uy=4.7m/s
Rachel(2.5,0)
ball(6.5,4.7)
To get the resultant of their speed
Add the horizontal speed of rachel to that of the ball to get the total horizontal speed
Add the vertical speed of rachel and the ball to get the total vertical speed component
TUx=2.5+6.5=9M/S
TUy=0+4.7=4.7m/s
R=
R=
R=
R=10.15m/s
the direction
tan
=TUy/TUx
tan=4.7/9
=tan^-1(0.522)
=27.57deg
Fundamental frequency, f1=v/2l
Let the length of the pipe be ‘l’
<em>By given: v=340m/s, f1=60Hz</em>
Thus, 60=340/2l
60=170/l
l=170/60=17/6=2.8333
<em><u>The length of the pipe is 17/3=2.8333m.</u></em>
What two forces are required for generators and electric motors to work? “A” Electricity and magnetism.
In an electric motor, the energy transformation begins as “A” Electrical And becomes mechanical.
The role of thermal energy is to balance the electrical energy lost from the light bulb.
<h3>
Energy conservation</h3>
The law of energy conservation states that energy can neither be created nor destroyed but can be transformed from one form to another.
<h3>Thermal energy</h3>
This is a form of energy that occurs due to rise in temperature.
The role of thermal energy is to balance the electrical energy lost from the light bulb.
Learn more about conservation of energy here: brainly.com/question/166559
