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KengaRu [80]
3 years ago
11

A string roller of scissors is an example of both lever and wedge​

Physics
1 answer:
bezimeni [28]3 years ago
7 0

Answer:

What type of question is this?

Explanation:

Is this a true or false question?

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What is the equivalent resistance of a circuit that contains four 75.02
viktelen [127]

Answer:

option A is the correct answer

3 0
2 years ago
WHAT IS THE MASS OF AN OBJECT THAT WEIGHS 100 N?
Finger [1]

Answer:

10.2 kg

Explanation:

Assuming the object is on Earth:

w = mg

m = w / g = 100 / 9.81 = 10.2kg

6 0
3 years ago
Someone please help??
stira [4]
The efficancy is .375
5 0
3 years ago
Two blocks A and B have a weight of 11 lb and 5 lb , respectively. They are resting on the incline for which the coefficients of
Alchen [17]

Answer:

\theta=10.20^{\circ}  

\Delta l=0.10 ft    

Explanation:

First of all, we analyze the system of blocks before starting to move.

\Sum F_{x}=P_{A}sin(\theta)+P_{B}sin(\theta)-F_{fA}-F_{fB}=0  

\Sum F_{x}=11sin(\theta)+5sin(\theta)-0.16N_{A}-0.23N_{B}=0

11sin(\theta)+5sin(\theta)-0.16P_{A}cos(\theta)-0.23P_{B}cos(\theta)=0

11sin(\theta)+5sin(\theta)-0.16*11cos(\theta)-0.23*5cos(\theta)=0

11sin(\theta)+5sin(\theta)-0.16*11cos(\theta)-0.23*5cos(\theta)=0  

16sin(\theta)-2.91cos(\theta)=0  

tan(\theta)=0.18  

\theta=arctan(0.18)  

\theta=10.20^{\circ}  

Hence, the incline angle θ for which both blocks begin to slide is 10.20°.

Now, if we do a free body diagram of block A we have that after the block moves, the spring force must be taken into account.  

P_{A}sin(\theta)-F_{fA}-F_{spring}=0

Where:

F_{spring} = k\Delta l=2.1\Delta l

P_{A}sin(\theta)-0.16*11cos(\theta)-2.1\Delta l=0

\Delta l=\frac{11sin(\theta)-0.16*11cos(\theta)}{2.1}

\Delta l=0.10 ft    

Therefore, the required stretch or compression in the connecting spring is 0.10 ft.

I hope it helps you!

4 0
3 years ago
Please help me on due today
Bad White [126]

Subject-Matter Achievement Goal

1. My subject-matter achievement goal is:

Answer:  Read 1 full chapter book in 1 week

2. My action steps are:

Answer:  Read an equal amount of chapters every day for a week

3. My time frame is:

Answer:  1 week

4. Assets and Strengths:

Answer:  ability to focus,

5. Motivation:

Answer:  Great interest in the book I chose

6. Obstacles:

Answer:  Might lose page number, forget where I am at in the book, forget to read one day

7. Solutions:

Answer:  Get or make a bookmark, keep a personal reading log, set alarm for a certain time each day

Study/Organizational Skills Goal

8. My study/organizational skills goal is:

Answer: manage my time better

9. My action steps are:

Answer: planning things out to be more organized

10. My time frame is:

Answer: from now to the end of the school year

11. Assets and Strengths:

Answer: a planner so I can pace myself

12. Motivation:

Answer: give breaks and take time to do things I enjoy

13. Obstacles:

Answer: leaving things last minute

14. Solutions:

Answer:  planning to do certain things before a certain day

This can be for any of those goals

Personal Enrichment Goal

15. My personal enrichment goal is:

Answer: Stay healthy

16. My action steps are:

Answer: eat healthier foods

17. My time frame is:

Answer: now to the end of the school year

18. Assets and Strengths:

Answer: I don't make a big deal out of eating veggies and stuff

19. Motivation:

Answer: treat myself every so often

20. Obstacles:

Answer: Craving junk food

21. Solutions:

Answer: find a way to make healthier foods taste similar to junk food (EX. Put cheese on broccoli)

4 0
3 years ago
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