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pishuonlain [190]
3 years ago
5

When responding to sound, the human eardrum vibrates about its equilibrium position. suppose an eardrum is vibrating with an amp

litude of 5.65 10-7 m and a maximum speed of 2.68 10-3 m/s. (a) what is the frequency (in hz) of the eardrum's vibration? 745.92 hz (b) what is the maximum acceleration of the eardrum?
Physics
1 answer:
vodomira [7]3 years ago
5 0
745.92 hz (b) 
this is hte answer only because i seen it on the question lol
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Which wave has a longer period and how many times, the wave with a frequency of 7000Hz or the wave with a frequency of 21.000Hz?
Nuetrik [128]

Answer:

I would say the answer is the wave of 21.000Hz

Explanation:

Because it has more frequency, and as more frequency you add, the time or longer period also increases.

3 0
3 years ago
Objects 1 and 2 attract each other with a gravitational force of 12 units. If the mass of Object 2 is tripled, then the new grav
olasank [31]

Explanation:

Fgravity = G*(mass1*mass2)/D².

G is the gravitational constant, which has the same value throughout our universe.

D is the distance between the objects.

so, if you triple one of the masses, what does that do to our equation ?

Fgravitynew = G*(3*mass1*mass2)/D²

due to the commutative property of multiplication

Fgravitynew = 3* G*(mass1*mass2)/D² = 3* Fgravity

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2 years ago
A kettle is rated at 1 kW, 220 V. Calculate the working resistance of the kettle.
Anna [14]

Explanation:

Power of electric kettle, P = 1 kW

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P=\dfrac{V^2}{R}

R is resistance

R=\dfrac{V^2}{P}\\\\R=\dfrac{(220)^2}{10^3}\\\\R=48.4\ \Omega

(b) When connected to a 220 V supply, it takes 3 minutes for the water in the kettle to reach boiling point.

Energy supplied is given by :

E=P\times t

P is power, P=\dfrac{V^2}{R}

E=\dfrac{V^2}{R}t\\\\E=\dfrac{(220)^2}{48.4}\times 180\\\\E=180000\ J\\\\E=180\ kJ

5 0
3 years ago
Which situation is NOT the result of an unbalanced force acting on an object? A. an object speeds up B. an object maintains spee
7nadin3 [17]
Im pretty sure its b........
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3 years ago
Help on the question (blue letters)
Nataliya [291]

Answer:

The top of the mountian is colder

Explanation:

As air rises, the pressure decreases. It is this lower pressure at higher altitudes that causes the temperature to be colder on top of a mountain than at sea level.

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