I need question 5 answered. ### Physics Problems: Friction and Force **1. Piano Movement on Flat Ground**- **Object**: 80 kg piano- **Coefficients of friction**: Kinetic (μ_k) = 0.2, Static (μ_s) = 0.4 a. **Weight of Piano**: - Answer: 784 N b. **Force to Start Movement**: - Answer: 312 N c. **Force for Constant Velocity**: - Answer: 156.8 N d. **Force for Acceleration (5 m/s²)**: - Answer: 278.8 N**2. Box on Concrete Ground**- **Object**: 120 kg box- **Force applied**: 800 N- **Coefficients of friction**: Kinetic (μ_k) = 0.8, Static (μ_s) = 0.5 - **Question**: Can the workers move the box? - Answer: No, they need a force of 940.8 N to begin moving the box.**3. Object on Inclined Plane**- **Mass**: 65 kg- **Incline angle**: 25°- **Force applied**: 35 N- **Acceleration**: 2.5 m/s² - **Question**: What is the kinetic friction (μ_k) between the object and the plane? - Answer: μ_k = 0.31**4. Person Sliding Down Hill**- **Mass**: 76 kg- **Incline angle**: 50°- **Coefficient of friction**: μ_k = 0.1 - **Question**: Speed after 2 seconds? - Answer: 72.6 m/s²**5. Truck on Hill**- **Weight of truck**: 700,000 N- **Incline angle**: 50° - **Task**: Calculate the perpendicular force component. - Answer: 449,645.1 N**Diagram Explanation (Problem 4)**- **Inclined Plane Diagram**: A triangle representing the slope, with forces depicted: - mgsinθ (down the slope) - mgcosθ (perpendicular to the slope) - Friction (opposing the

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Phe perpencheuler force ca (s stine on a

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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Nuclear Reactions

Nuclear reactions are processes in which the fundamental characteristics of a nucleus changes. They change into a completely different nucleus. These processes occur naturally in an unstable nucleus. Bombarding an energetic particle can induce nuclear reactions. In this article, both the naturally occurring nuclear reactions are termed as radioactive decay and the induced nuclear reactions are further categorized as nuclear fission and nuclear fusion.

Question

I need question 5 answered.

### Physics Problems: Friction and Force

**1. Piano Movement on Flat Ground**
- **Object**: 80 kg piano
- **Coefficients of friction**: Kinetic (μ_k) = 0.2, Static (μ_s) = 0.4

a. **Weight of Piano**:
- Answer: 784 N

b. **Force to Start Movement**:
- Answer: 312 N

c. **Force for Constant Velocity**:
- Answer: 156.8 N

d. **Force for Acceleration (5 m/s²)**:
- Answer: 278.8 N

**2. Box on Concrete Ground**
- **Object**: 120 kg box
- **Force applied**: 800 N
- **Coefficients of friction**: Kinetic (μ_k) = 0.8, Static (μ_s) = 0.5

- **Question**: Can the workers move the box?
- Answer: No, they need a force of 940.8 N to begin moving the box.

**3. Object on Inclined Plane**
- **Mass**: 65 kg
- **Incline angle**: 25°
- **Force applied**: 35 N
- **Acceleration**: 2.5 m/s²

- **Question**: What is the kinetic friction (μ_k) between the object and the plane?
- Answer: μ_k = 0.31

**4. Person Sliding Down Hill**
- **Mass**: 76 kg
- **Incline angle**: 50°
- **Coefficient of friction**: μ_k = 0.1

- **Question**: Speed after 2 seconds?
- Answer: 72.6 m/s²

**5. Truck on Hill**
- **Weight of truck**: 700,000 N
- **Incline angle**: 50°

- **Task**: Calculate the perpendicular force component.
- Answer: 449,645.1 N

**Diagram Explanation (Problem 4)**
- **Inclined Plane Diagram**: A triangle representing the slope, with forces depicted:
- mgsinθ (down the slope)
- mgcosθ (perpendicular to the slope)
- Friction (opposing the

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