Answer:
Δr = 0.425 m
Explanation:
This is a sound interference exercise, the expression for destructive interference is
Δr = (2n + 1) λ / 2
in this case the movement is in the same direction as the sound, therefore the movement is one-dimensional
let's use the relationship between the speed of sound and its frequency and wavelength
v = λ f
λ = v / f
the first minium occurs for n = 0
Δr = λ / 2
Δr = v / 2f
Δr =
Δr = 0.425 m
this is the distance from the current position that we assume in the center of the room
Answer:
The weight required on the piston equals 420 Newtons.
Explanation:
from the principle of transmission of pressure in a hydraulic lift we have
where
'F' is the force that acts on the piston
'A' is the area of the piston.
Since the force in the question is 21000 Newtons thus upon putting the values in the above equation we get
Solving for we get
Answer:
sand and air
Explanation:
air is a mix of carbon dioxide and oxygen and sand is a mix of rocks and stuff
Answer:
Mass of Exoplanet = 0.58 kg
Explanation:
First, we will calculate the speed of the forest moon:
circumference = 2πr = 2π(14441566 m) = 90739035.3 m
time = 6 days 10 hr = (6 days)(24 h/1 day)(3600 s/1 h) + (10 h)(3600 s/1 h)
time = 554400 s
Therefore,
We know that the centripetal force on forest moon will be equal to the gravitational force given by Newton's Gravitational Law, as follows:
<u>Mass of Exoplanet = 0.58 kg</u>
Answer:
p = mv
v = p/m
m = p/v
Explanation:
The momentum is given by the following equation:
(1)
Where:
is the mass of the object
is the velocity of the object
If we isolate from (1):
(2)
If we isolate from (1):
(3)
As we can see equations (1), (2) and (3) show the relationships among momentum, mass, and velocity.