science

posted by Matt

1. A box of cleaning supplies weighs 15n.if the box is lifted a distance of 0.60m,how much work is done?

A. 0.040 j
B.9 j
C.14 j (I PICK THIS)
D.25 j

2.to chop wood you apply 50.0n of force to an ax. The ax applies 600.0n of force to the wood. What is the mechanical advantage of the ax?

A. 650.0 (I PICK THIS)
B. 8.3
C. 12.0
D. 0.0833

3.you do 185 j of work pulling a cart up a ramp. if the ramp does 153 j of work, what is the efficiency of the ramp?

A. 82.7 percent
B. 121.0 percent(I PICK THIS)
C. 32.0 percent
D. 338.0 percent

4.remy noticed that after oiling his skateboard wheels, it was easier to reach the speeds he needed to perform his tricks. How did the oil help??

A. the oil reduced friction between the moving parts of the skateboard.

B. the oil increased friction between the moving parts of the skateboard(I PICK THIS

C. the oil reduced friction between the skateboard wheels and the ground.

D. The oil increased friction between the skateboard wheels and the ground

1. Damon

1. A box of cleaning supplies weighs 15n.if the box is lifted a distance of 0.60m,how much work is done?
===================
Force * distance
15 * .6 = 9 Joules
==========================

A. 0.040 j
B.9 j MY CHOICE
C.14 j (I PICK THIS)
D.25 j

2.to chop wood you apply 50.0n of force to an ax. The ax applies 600.0n of force to the wood. What is the mechanical advantage of the ax?
=====================
600/50 = 60/5 = 12
===================

A. 650.0 (I PICK THIS)
B. 8.3
C. 12.0 <---------------- MY CHOICE
D. 0.0833

3.you do 185 j of work pulling a cart up a ramp. if the ramp does 153 j of work, what is the efficiency of the ramp?
-----------------------------
I think you have a typo in the question
If the useful work done is 153 and you needed 165 then
100 * 153/185 = 82.7%
===================

A. 82.7 percent <------ MY CHOICE
B. 121.0 percent(I PICK THIS)
C. 32.0 percent
D. 338.0 percent

4.remy noticed that after oiling his skateboard wheels, it was easier to reach the speeds he needed to perform his tricks. How did the oil help??
*************************************
A. the oil reduced friction between the moving parts of the skateboard.
**************************************
Oil REDUCES friction!
****************************

B. the oil increased friction between the moving parts of the skateboard(I PICK THIS *********NO!!!!!

C. the oil reduced friction between the skateboard wheels and the ground.

D. The oil increased friction between the skateboard wheels and the ground

2. cece

3. Sarah

I don't know either

4. Mary

I may have an idea I think it would be A.

5. ryan

1.o.040j 2.650.0 3.338.0

6. Mo

1. B
2. C
3. A
4. A

7. Kenzie

Thanks mo!

8. I dunno

What about the last one? Matt forgot to put up question #5

9. DeezNuts

The last one is d

10. Salted Caramel

1. B
2. C
3. A
4. A
5. D

100% guaranteed
I just took it

11. Anonymous

Thanks salted Caramel!

12. Reign

Thank You
Salted Carmel!!! I got 100%

13. smart one : )

salted carmel and mo are right i got 100% : )

14. ME

ITS JUST A CAMEL

15. Camel Queen

Thx Salted Carmel!

16. SAV

Salted Caramel is 100% correct. I have just taken the quiz and gotten a 5/5 100%

17. horgie

b
c
a
a
d

5/5 100%

18. Kim

Thanks guys.

19. SlackaCracka9000

100% thx Caramel

20. Anonymous

This sit mad me get an f

21. Alanah

thanks

22. CONNECTIONS ACCEDEMY STUDENT

yup,correct

23. bee

thnx salted caramel i love you want to get married?

24. candy

i got 4 out of 5 right

25. Papa Roach~Last Resort Fan

SALTED CARAMEL IS CORRECT! Thanks salted caramel! 100%

1.B
2.C
3.A
4.A
5.D
!!!!!

26. Anonymous

Salted Caramel is correct for Unit 3, Lesson 1

27. secret

salted caramel rocks thanks dude!!!!!!!!!!!!:)

28. Science

This is for CONNECTIONS ACADEMY ONLY
I do not want any other students from a different getting it wrong

Lesson 1: Work and Machines
Science 6 B Unit 3: Energy

1. B
2. C
3. A
4. A
5. D

29. Clorox Bleach

1. B
2. C
3. A
4. A
5. D
100% THANKS SALTED CARMEL.

30. BOB

SALTED CARAMEL IS CORRECT

31. Connexusboi01

SALTED CARAMEL IS CORRECT! Thanks salted caramel! 100%

1.B
2.C
3.A
4.A
5.D

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