The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350000 rpm. These drills, along with ultrasonic dental drills, are the fastest turbines in the world-far exceeding the angular speeds of jet engines. Suppose a drill starts at rest and comes up to operating speed in 2.0 s. You may want to review (Pages 305 - 307)

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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hw 26 question 5 part b

The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350,000 rpm. These drills, along with ultrasonic dental drills, are the fastest turbines in the world—far exceeding the angular speeds of jet engines. Suppose a drill starts at rest and comes up to operating speed in 2.0 seconds. You may want to review [Pages 305 - 307].
Transcribed Image Text:The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 350,000 rpm. These drills, along with ultrasonic dental drills, are the fastest turbines in the world—far exceeding the angular speeds of jet engines. Suppose a drill starts at rest and comes up to operating speed in 2.0 seconds. You may want to review [Pages 305 - 307].
**Part B**

**Question:**
How many revolutions does the drill bit make as it comes up to speed?

**Instruction:**
Express your answer using two significant figures.

**Input Box:**
Δθ = [          ] rev

**Buttons and Options:**
- A button for submitting the answer: **Submit**
- Options for requesting help: **Request Answer**
- Additional navigation options: **Return to Assignment** | **Provide Feedback**

**Symbols and Tools:**
- Input format buttons for mathematical symbols and Greek letters.
- Options for undoing and redoing actions.

This section requires the calculation of the total revolutions (Δθ) of a drill bit as it accelerates to its full speed, with the result rounded to two significant figures.
Transcribed Image Text:**Part B** **Question:** How many revolutions does the drill bit make as it comes up to speed? **Instruction:** Express your answer using two significant figures. **Input Box:** Δθ = [ ] rev **Buttons and Options:** - A button for submitting the answer: **Submit** - Options for requesting help: **Request Answer** - Additional navigation options: **Return to Assignment** | **Provide Feedback** **Symbols and Tools:** - Input format buttons for mathematical symbols and Greek letters. - Options for undoing and redoing actions. This section requires the calculation of the total revolutions (Δθ) of a drill bit as it accelerates to its full speed, with the result rounded to two significant figures.
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