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ziro4ka [17]
4 years ago
5

The speed of sound in air at 25 degrees Celcius is 340 meters per second. The frequency of the note C3 is 128 Hertz. What is the

wavelength of this sound wave?
Physics
1 answer:
Step2247 [10]4 years ago
4 0

Answer:1. Find the wavelength in air at 20°C of an ... 19 m. 2. What is the wavelength of an 18-Hz sound wave in seawater at 25°C? ... 3. Find the frequency of a sound wave moving through iron at 25°C with a ... The lowest frequency is. 25. Resonance on Strings A violin sounds a note of F sharp ..

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Ifa truck starts from rest and it has acceleration of 4 m/s for 5 second
yan [13]

Answer:

Distance 50m

final velocity 20ms^-1

s = ut +  \frac{1}{2} a {t}^{2}  \\  = 0 \times t +  \frac{1}{2} \times 4 \times  {5}^{2}   = 50m

v = u + at \\ v = 0 + 4 \times 5 \\ v = 20ms^{ - 1}

6 0
3 years ago
What is energy and object has due to its motion
jolli1 [7]
The energy stored in motion is called kinetic energy.
3 0
3 years ago
ILL RATE YOU A 5, THANK YOU, AND MARK YOU AS BRAINLIEST! HURRY!
andreyandreev [35.5K]

Answer:

The offspring is homozygous for eye color.

Explanation:

Brown eyes is the shared allele of both parents (meaning homozygous) and an allele for hair type was not inherited from only one parents but from both however will recieve the dominant trait. (This is my best guess; I haven't studied this in awhile though)

7 0
3 years ago
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An electric motor is connected to a battery. The current flows through brushes to a commutator ring, which is attached to a elec
Rzqust [24]

Answer:

Commutator is a ring which reverse the direction of current in AC circuit so that the coil connected to it will continuous to move in the same direction.

Explanation:

In motors there exist a coil which is rotated due to torque of magnetic field when current flow through it. Since AC current is used to run the motor so we know that AC current changes its direction after half cycle.

So here commutator plays an important role to reverse the direction of current after every half cycle so that the current goes in same direction always into the coil.

This will produce a constant direction torque on the coil so that it will rotate in same sense always.

So commutator role is to provide same direction current to the coil by reversing its direction after every half cycle

8 0
3 years ago
What are 5 landforms formed by river erosion
horsena [70]
Valleys, waterfalls, flood plains, meanders, and oxbow lakes 
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