Answer:
The earth has a larger mass and therefore more inertia.
Explanation:
precipitation from the ocean and then evaporation into a cloud
B.
condensation from the ocean and then evaporation into a cloud
C.
precipitation from the ocean and then collection into a cloud
D.
evaporation from the ocean and then condensation into a cloud
Answer:
b
Explanation:
that to somebody who answered!
Answer:
Between 23,000 to 54,000 Hz
A dog whistle typically emits sound at frequencies above 20,000 Hz but below 60,000 Hz, which is a range humans cannot hear but dogs can.
The frequency of sound emitted by a dog whistle is typically above the range of human hearing, which upper limit is around 20,000 Hz. However, since dogs can hear up to about 60,000 Hz, you would expect a dog whistle to emit sound at frequencies above 20,000 Hz but below 60,000 Hz. So, a frequency anywhere within the range 20,000 Hz and 60,000Hz would be suitable for a dog whistle.
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Answer:
To divide the charge q into two parts such that they experience maximum electrostatic repulsion, the charges should be equal in magnitude and opposite in sign. In other words, the charge q should be divided into two equal charges of -q/2 and +q/2. This arrangement will result in the maximum electrostatic repulsion between the charges, as like charges repel each other.
Explanation:
The wavelength of the radio wave is 5.5 × 10³ m. If the frequency of the wave is 5.5 × 10⁴ hertz and the speed of the wave is 3.0 × 10⁸ m/sec.
The speed(v) of a wave is the product of wavelength(λ) and the frequency(η). We can understand this relation by the definition of the speed, which is the distance travelled by the object in unit time. The unit of distance is meter, also the unit of the wavelength is meter. On the other hand the unit of frequency is sec⁻¹. So,
Speed of a wave(v) = wavelength(λ) × Frequency(η)
Wavelength(λ) = speed of the wave(v)/Frequency(η)
Wavelength(λ) = (3.0 × 10⁸)/(5.5 × 10⁴)
Wavelength(λ) = 5.5 × 10³ m
To know more about wavelength, here
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Answer:
The thermal energy generated by the friction as the mass slides down the ramp is .
Explanation:
Given:
The mass of the object is,
The angle of the ramp is,
The initial height of the object on the ramp is,
The final velocity of the object is,
When the object is at rest on the ramp, its total energy is potential energy. When it moves down the ramp its kinetic energy is increased and potential energy is decreased and a part of its energy is lost to overcome the force of friction. Finally, when it is at the bottom of the ramp, its total energy becomes only kinetic energy.
The total energy of the object at a height on the ramp is given by
When the object is at the bottom of the ramp, its total energy is given by
So, the energy that is lost as thermal energy is given by