Answer:
Time, t = 6.34 hours.
Explanation:
Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.
Mathematically, velocity is given by the equation;
Therefore, making time the subject of formula;
Given the following data;
Displacement = 5200km
Average velocity = 820km/hr
Substituting into the equation, we have;
Time = 6.34 hours.
<em>Hence, it would take 6.34 hours for the airplane to reach its destination. </em>
Answer:
The answer to question is below
Explanation:
Data
t1 = 0
vo = 4 m/s
a)
d = vot + 
d = 4t + 
b)
c)
= 
t² = 32
t = 5.66 s
d)
d = 4(5.66) + 0.75(5.66)²
d = 22.64 + 24.02
d = 46.67 m
OK. I would build it the same shape and size as a microwave oven, but I would leave out all the normal electronics.
In the side compartment, in place of the electronics, at the top, I would put a little gas flame, like a Bunsen burner. In the bottom of the side compartment, I would put a treadmill with two strong hamsters. Then, I would install ductwork in the compartment so that when the hamsters turn the wheel, some fan-blades along the rim of the wheel would blow the hot air from the gas flame down and into the big food compartment. This would warm the left-overs WITHOUT using electricity from the wall outlet, and without spraying any hazardous high-power RF energy into the kitchen.
<h3>The wavelength corresponds to the lower cut-off point of the sounds is 22.93 meter</h3>
<em><u>Solution:</u></em>
Given that,
A dog can hear sounds in the range from 15 to 50,000 Hz
The speed of sound at a temperature of 
is: 344 m/s
To find: wavelength
Where,
v is speed of sound
f is the frequency
f = lower cut off point = 15 Hz
Thus the wavelength corresponds to the lower cut-off point of the sounds is 22.93 meter
Fnet=m*a
a= Fnet/m
a=(20N[E]+9.0N[E])/ 12.0kg
a=2.4167m/s^2
a ≈ 2.4m/s^2
