To solve the astronaut's problem it is necessary to quickly consider the conservation of the moment.
By definition we know that,
Initial Momentum = Final Momentum
Where,
Human mass
Tank mass
v is the initial and final velocity of each object
In the case of the initial part we know that it is in a state without movement with respect to the ship.
In the case of the final moment there is a speed injection thanks to the oxygen tank, then,
Re-arrange to find the final velocity for astronaut,
Replacing
The astronaut has 4 minutes of air and must travel 200 meters therefore,
Re-arrange to find the time,
<em>He/She will reach the spacecraft within the stipulated time</em>
Answer:
The next resonance will be 150 Hz.
Explanation:
The frequency of the sound produced by a tube, both open and closed, is directly proportional to the speed of propagation. Hence, to produce the different harmonics of a tube, the wave propagation speed must be increased.
The frequency of the sound produced by a tube, both open and closed, is inversely proportional to the length of the tube. The greater the length of the tube, the frequency is lower.
Frecuency of the standing sound wave modes in a open-closed tube is:
fₙ=n*f₁ where m is an integer and f₁ is the first frecuency (30 Hz)
The next resonance is at 90 Hz. This means that it occurs when n = 3:
f₃=3*30 Hz= 90 Hz
This means that the next resonance occurs when n = 5:
f₅=5*30 Hz= 150 Hz
<u><em>The next resonance will be 150 Hz.</em></u>
<u><em></em></u>
The answer that fits in the blank is truck.
Inded, truck or trucking is moving the camera from one side to the other side to make the objects to appear closer or farther away.
There are some basic movements of the camera to record video footage: zoom, pan, tilt, dolly, truck, pedestal and rack focus.
forces: forces applied to an object in opposite directions that are not equal in size. Unbalanced forces result in a change in motion. friction: the force that opposes the motion or tendency toward motion of two objects that are in contact.
When we dissolve NaCl in water, the ions are held in a rigid cage of water molecules. It takes less energy to activate these molecules, so the specific heat of the water decreases. The greater concentration of NaCl, the lower the specific heat capacity of the solution.