Most of the information's required are already given in the question. Based on those information's the answer can be easily deduced.
Wavelength of the sound wave = 0.450 meters
Speed of the sound wave = 330 meters per second
We already know
v=fλ
330 = f * 0.450
f = 330/0.450
= 733.33 hertz
So the frequency of the wave is 733.33 hertz
c. remains the same
b. decrease
d. depends on the shape
As an object sinks in a fluid, the buoyant force decrease.
Hope this helped.
B) The clouds flatten into a disc > The sun is born > The clouds condense > the planets are born
C) The clouds of dust and gases rotate at high speed > The clouds condense > The sun is born > The planets are born
D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
Answer:
D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born
Explanation:
Planets are formed from Planetary nebula. The cloud of dust and gases condenses under its own weight. The condensed matter starts rotating at high speeds and gathers more mass. The core forms the star and rest of it eventually flattens into an elliptical disc from which planet is born. Thus, the correct sequence is: D) The clouds of gases condense > The clouds rotate at high speed > The clouds flatten into an elliptical disc > The planets are born.
-a wire that is 2mm thick and not coiled
-a wire that is 1-mm thick and coiled
-a wire that is 2-mm thick and coiled
If the current in each wire is the same, the wire that produces the strongest magnetic field is a wire that is 2 mm thick and coiled. The correct option is d.
A magnetic field is a false field of current created. This interactive animation shows how the magnetic field relies on the direction of the current that creates the field and is strongest in the vicinity of the wire.
In every wire, the current is the same. If a wire carrying electricity is wound with additional turns, the magnetic field generated by the wire grows. Low resistance to the current would result from a thick wire. Therefore, the highest magnetic field would be produced by a 2-mmthick wire that is coiled.
Therefore, the correct option is d. a wire that is 2 mm thick and coiled.
To learn more about the magnetic field, refer to the link:
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Answer: option 4: A wire that is 2-mm thick and coiled.
Explanation:
The current in each wire is same. The magnetic field due to a current carrying wire increases if the wire is coiled with the more number of turns. A thick wire would cause low resistance to the current. Hence, a 2-mm thick wire which is coiled would produce the strongest magnetic field.
0.066 s
0.20 s
0.33 s
The kinetic energy of a mass oscillating on a vertical spring is at a minimum when the object is at the extreme points of its motion. This is because the object has momentarily stopped moving, leading to zero kinetic energy. All the energy is instead stored as potential energy in the spring.
In the case of a mass oscillating on a vertical spring, the kinetic energy of the object is at a minimum when the object is at its extreme points, i.e., when it is at points 'a' or 'b'. This is because, at these positions, the object momentarily comes to rest before reversing its direction, thereby having a velocity (and hence kinetic energy), which is proportional to the square of the velocity, of zero. The energy at these points is mainly stored in the spring as potential energy.
At these extreme points, we have a situation where the potential energy (U) is maximum and the kinetic energy (K) is equal to zero. At the midpoint position x = 0, the entire energy is kinetic while the potential energy in the spring is zero, which suggests that the kinetic energy is minimum at the extreme positions.
This property of kinetic and potential energy fluctuating between each other is a common characteristic of simple harmonic motion.
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