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4 years ago

The quartz crystal in a digital watch has a frequency of 32.8 khz. what is its period of oscillation?

1 answer:

3 0

The frequency of the digital watch is:
$f=32.8 kHz = 3280 Hz$

The period of oscillation is equal to the reciprocal of the frequency; therefore, in this problem, the period of oscillation of the digital watch is:
$T=\frac{1}{f}=\frac{1}{3280 Hz}=3.05 \cdot 10^{-4}s$

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a light bulb has a resistance of 360 . what is the current in the bulb when it has a potential difference of 120 v across it? 0.

xenn [34]

Presume we are looking for the current:

V = IR

120 = I*360

120/360 = I

1/3 = I

I = 1/3 = 0.333..

Current ≈ 0.33 Ampere.

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3 years ago

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What is happening if energy input remains constant and voltage remains the same in a circuit, but the current decreases?

DENIUS [597]

<span>Ohm's law deals with the relation between voltage and current in an ideal conductor. It states that: Potential difference across a conductor is proportional to the current that pass through it. It is expressed as V=IR. The correct answer from the choices listed above is option A. The resistance has increased. </span>

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3 years ago

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An 80kg person falls 60 m off of a waterfall. What is her GPE?

ElenaW [278]

Answer:

The gravitational potential energy of the man

= mass of the man(m) × gravitational acceleration(g) × height (h)

80 Kg × 9.8 m/s^2 × 60 m

80 × 9.8 x 60 ( kg ×m^2/s^2)

47040 Joules (ans)

Hope it helps

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3 years ago

A battery uses _________________ energy to generate _______________ energy.

Alisiya [41]

Uses chemical and generates electrical

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4 years ago

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how fast would a(n) 73 kgkg man need to run in order to have the same kinetic energy as an 8.0 gg bullet fired at 430 m/sm/s ?

Mars2501 [29]

Answer:

an 85 kg person run to equal the kinetic energy of an 8.0 g bullet fired at 410 m/s? The speed is, it might be argued,

v=4.0m/s

Explanation:

Typically, the mathematical formula for kinetic energy is as follows:

KE= $\frac{1}{2} *m*v^{2}$

K.E= kinetic energy

M=mass

V= speed

so,

KE=1/2*0.008*(420)*420

K.E=672.4J

Therefore,

v*v=672.4/85

v*v=15.821

v=4.0m/s

Therefore

v=4.0m/s

What is Kinetic Energy?

The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity.

To know more about Kinetic Energy? Visit to: -

brainly.com/question/22174271

#SPJ4

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1 year ago