Jet planes can exceed the speed of sound. The Mach number describes the speed of such planes. Mach 2 is twice the speed of sound. The speed of sound in air is approximately $344 \frac{m}{sec}$. Complete parts a. through c. below. a. If the speed of a plane is described as Mach 2.4 what is its speed in kilometers per hour ($\frac{km}{hr}$)? (Round to the nearest whole number as needed.) b. If the speed of a plane is described as Mach 4.1, what is its speed in meters per second? (Round to the nearest whole number as needed.) c. Describe the speed of $3950 \frac{km}{hr}$ as a Mach number. Mach (Type an integer or decimal rounded to two decimal places as needed.)
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The speed of sound in air is approximately $344 \frac{m}{sec}$. Mach number is a multiple of the speed of sound. For example, Mach 2 is twice the speed of sound. Step 2: Solve part a. a. If the speed of a plane is described as Mach 2.4, what is its speed in Show more…
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Jet planes can exceed the speed of sound. The Mach number describes the speed of such planes. Mach 2 is twice the speed of sound. The speed of sound in air is approximately 344 m/sec. Complete parts a. through c. below. a. If the speed of a plane is described as Mach 2.2 what is its speed in kilometers per hour (km/hr)? 2725 km/hr (Round to the nearest whole number as needed.) b. If the speed of a plane is described as Mach 3.3, what is its speed in meters per second? 1135 m/sec (Round to the nearest whole number as needed.) c. Describe the speed of 3900 km/hr as a Mach number. Mach 3.15 (Type an integer or decimal rounded to two decimal places as needed.)
James K.
(I) $(a)$ How fast is an object moving on land if its speed at $20^{\circ} \mathrm{C}$ is Mach 0.33$?$ (b) A high-flying jet cruising at 3000 $\mathrm{km} / \mathrm{h}$ displays a Mach number of 3.2 on a screen. What is the speed of sound at that altitude?
(I) (a) How fast is an object moving on land if its speed at 24°C is Mach 0.33? (b) A high-flying jet cruising at 3000 km/h displays a Mach number of 3.1 on a screen. What is the speed of sound at that altitude?
Madhur L.
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