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STatiana [176]
3 years ago
14

A wave has a wavelength of 9 mm and a frequency of 16 hertz. What is its speed?

Physics
1 answer:
saul85 [17]3 years ago
6 0

For any wave . . . <em>Speed = (frequency) x (wavelength)</em>

For this wave . . .

Speed = (16/s) x (9 mm)

<em>Speed = 144 mm/s</em> or 0.144 m/s

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If the period of a given wave is 6 seconds, what is the frequency of the wave?
Ann [662]

Answer:

\text{B. }0.17\:\mathrm{Hz}

Explanation:

The frequency of a wave is given by f=\frac{1}{t}, where t is the period of the wave.

Substituting t=6, we get:

f=\frac{1}{6}\approx \boxed{\text{B. }0.17\:\mathrm{Hz}}

6 0
3 years ago
Driving on asphalt roads entails very little rolling resistance, so most of the energy of the engine goes to overcoming air resi
trapecia [35]

Answer:

a)  F_p=882N

b)  P=4410W

c)  V_p'=24135 ,n=15.2\%

Explanation:

From the question we are told that:

Mass M=1500kg

Velocity v=4.9m/s

Coefficient of Rolling Friction \mu=0.06

a)

Generally the equation for The Propulsion Force is mathematically given by

 F_p=\mu*mg

 F_p=0.06*1500*9.81

 F_p=882N

b)

Therefore Power Required at

 V_p=5.0m/s

 P=F_p*V_p

 P=882*5

 P=4410W

c)

 V_p' =15mpg

 V_p'=15*\frac{1609}

 V_p'=24135

Generally the equation for Work-done is mathematically given by

 W=F_p*V_p'

 W=882*15*1609

 W=2.13*10^7

Therefore

Efficiency

 n=\frac{W}{E}*100\%

Since

Energy in one gallon of gas is

 E=1.4*10^8J

Therefore

 n=\frac{2.1*10^7}{1.4*10^8}*100\%

 n=15.2\%

7 0
3 years ago
Which image shows both potential and kinetic energy
Vesnalui [34]

Do you have the picture

4 0
3 years ago
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What time of the day do you feel the most Energetic and what do you usually do in those moments?​
iren2701 [21]

Answer:

i typically feel the kost awake at night. i do my work (organize patinet info, label patient charts... etc.).

Explanation:

my circadian rythm is out of whack bc of dld

4 0
3 years ago
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Earth has four motions in its movement through space, rotation, revolution, processional, and solar motion, which two are of any
Anna007 [38]

Answer:

rotation and revolution

Explanation:

out of the four motions the earth is subject to which are: rotation about its axis, revolution around  the Sun, processional motion (a slow conical movement ) of the axis, and the solar motion (this refers to the

movement of the whole solar system with space),  only two are of any

importance to meteorology as this two causes changes in weather and seasons. The first motion is rotation. Earth rotates on its axis

once every 24 hours. One-half of the Earth’s surface is

therefore facing the Sun at all times. The second motion of Earth is its revolution around  the Sun. The revolution around the Sun and the earth tilt on its axis are responsible for changes in seasons. The Earth

makes one complete revolution around the Sun in

approximately 365 1/4 days.

6 0
3 years ago
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