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Art [367]
3 years ago
6

In the theory of plate tectonics, various segments of Earths crust, called plates, move toward and away from each other. In one

instance, the plate that consists of the Indian subcontinent drifted from southeastern Africe to its current position in asia, traveling at a speed of 15cm/y. This plate collided with Asia, forming the Himalayan mountain range in the process. Most of this formation occurred during the last 1.00 x 10^7 years, during which time the indian subcontinents motion has slowed to about 5 cm/y. What has been the acceleration in units of cm/y^2, of the indian subcontinent during this time period.
Physics
1 answer:
GrogVix [38]3 years ago
7 0

Answer:

-1.00 × 10⁻⁶ cm/y²

Explanation:

Using a = (v - u)/t where a = acceleration of the indian subcontinent, v = final speed of the indian subcontinent = 5 cm/y, u = initial speed of the indian subcontinent = 15 cm/y, and t = time of motion of the indian subcontinent = 1.00 × 10⁷ years.

Substituting the values of the variables, we find the acceleration of the indian subcontinent, a  = (v - u)/t = (5 cm/y - 15 cm/y)/1.00 × 10⁷ years = -10 cm/y ÷ 1.00 × 10⁷ years = -1.00 × 10⁻⁶ cm/y²

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The part of the ear where the sound wave converted into electrical impulse would be the cochlea. This part is the  auditory portion of the inner ear which produces nerve impulses in response to sound vibrations. Hope this answers the question. Have a nice day.
3 0
3 years ago
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Two loudspeakers in a 20c room emit 686 hz sound waves along the x-axis.a. if the speakers are in phase, what is the smallest di
jeyben [28]

<u>Answer :</u>

(a) d = 0.25 m

(b) d = 0.5 m

<u>Explanation :</u>

It is given that,

Frequency of sound waves, f = 686 Hz

Speed of sound wave at 20^0\ C is, v = 343 m/s

(1) Perfectly destructive interference occurs when the path difference is half integral multiple of wavelength i.e.

d=\dfrac{\lambda}{2}........(1)

Velocity of sound wave is given by :

v=f\times \lambda

d=\dfrac{v}{2f}

d=\dfrac{343\ m/s}{2\times 686\ Hz}

d=0.25\ m

Hence, when the speakers are in phase the smallest distance between the speakers for which the interference of the sound waves is perfectly destructive is 0.25 m.

(2) For constructive interference, the path difference is integral multiple of wavelengths i.e.

d=n\lambda  ( n = integers )

Let n = 1

So, d=\dfrac{v}{f}

d=\dfrac{343\ m/s}{686\ Hz}

d=0.5\ m

Hence, the smallest distance between the speakers for which the interference of the sound waves is maximum constructive is 0.5 m.

4 0
3 years ago
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A box is sitting on a 2 m long board at one end. A worker picks up the board at the end with the box so it makes an angle with t
Vlada [557]

Answer:

Explanation:

When the box is on the ramp , component of its weight along the ramp

= mg sinθ

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=μ mg cosθ

For sliding

μ mg cosθ < mg sinθ

μ cosθ < sinθ

.5 x cos35 < sin35

.41 < .57

So the box will slide

When sliding starts , kinetic friction acts

Net force in downward direction

mgsinθ - μ mg cosθ

acceleration

= gsinθ - μ g cosθ

= 5.62 - .3 x 9.8 x cos35

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3 years ago
A 234.0 g piece of lead is heated to 86.0oC and then dropped into a calorimeter containing 611.0 g of water that initally is at
Vaselesa [24]

Answer:24.70 ^{\circ}C

Explanation:

Given

mass of lead piece m_l=234 gm\approx 0.234 kg

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Initial temperature of lead piece T_l=24^{\circ}C

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Let us take T ^{\circ}C be the final temperature of the system

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T=\frac{2173.491}{87.97}=24.70^{\circ}C

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nekit [7.7K]

Answer:

True

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