Units Conversion and Wave Speed pt2

Saturn's orbit is 19.2 AU, on average, away from the Sun. Convert that to kilometers (km).

• 2.87 x 10^9 km

• 5.67 x 10^9 km

• 1.23 x 10^10 km

• 3.45 x 10^9 km

Tags

NGSS.HS-ESS1-4

Neptune's orbit is 4,498,300,000 km, on average, away from the Sun. Convert that to Astronomical Units (AU).

• 32.1 AU

• 28.5 AU

• 30.07 AU

• 25.3 AU

Tags

NGSS.HS-ESS1-4

Pluto's orbit is 24.1 AU, on average, away from the Sun. Convert that to kilometers (km). Notice this compared to Neptune's average distance from the Sun.

• 3,601,422,207 km
• 5,432,109,876 km
• 4,205,123,456 km
• 2,987,654,321 km

Tags

NGSS.HS-ESS1-4

Convert the width of the Milky Way, which is approximately 105,700 light-years, to parsecs.

• 41,684

• 25,862

• 32,449

• 50,000

Convert the distance of the Andromeda galaxy, approximately 2,500,000 light-years away, to parsecs.

• 1,234,567 parsecs

• 3,456,789 parsecs

• 767,500 parsecs

• 5,678,901 parsecs

A guitar string vibrates at a frequency of 100 Hz. What is the wavelength (m) of the sound wave if the speed of sound is 150 m/s?

Answer explanation

Wavelength = Speed / Frequency = 150 m/s / 100 Hz = 1.5 m (2 sig figs)

Tags

112.45.c.8.B

What is the speed (m/s) of a 20 Hz with a 4m wavelength?

Tags

NGSS.HS-PS4-1

What is the frequency (Hz) of a wave traveling at 300 m/s with a 4 m wavelength?

Tags

NGSS.HS-PS4-1

Which equation can be used to calculate the speed of a wave?

• v = fλ

• f = v/λ

• λ = v/f

• v = λ/f

Tags

112.45.c.8.B

A wave with a wavelength of 0.5 meters is traveling through a medium with a velocity of 20 m/s. What is its frequency (Hz)?

Answer explanation

Given, λ = 0.5 m and v = 20 m/s. Using the wave speed equation, v = fλ, we can rearrange it to solve for frequency (f). Therefore, f = v/λ = 20 m/s ÷ 0.5 m = 40 Hz.

Tags

NGSS.HS-PS4-1