- #1
homeylova223
- 104
- 22
I am looking at the following exam the mechanical comprehension part and I am having trouble with some of the questions. Here is the link
https://drive.google.com/drive/folders/1ITIf6mx4RmDoL96IYoH-eY6-jQPh7CUv.
I am having trouble with the following
3. A woman sits in a dragster the beginning of a race. As the light turns green she steps on the accelerator. At the moment the dragster begins to accelerate what is her weight pushing into the seat relative to while the car was stationary?
a.less than while stationary
b. the same a while stationary
c. more than while stationary
Not sure since force=mass(acceleration). I would say her weight would decrease.
11. Where is the current greater in this circuit?
+A<------(--X)----->--B
a. greater at A than B
b.greater b than a
c. the same at A and B
I think electrons flow from positive to negative so greater than A is my answer.
12. X which has a negative charge is positioned between positive charge A and negative charge B. What direction will x move
A.a
B.b
C. remain where it is
15. the rate of heat exchange is faster
a.between a ice cube and 100 celcius glass of water
b.an icecube and 40 celcius water
c.none of the above
I thought since the colder glass is already cold they would exchange heat quicker because the temp difference is less. But heat exchange is faster when temperature difference is large.
20. This one has a picture in the exam. It basically ask what is hard pedaling a bicycle with large front wheel and small back wheel or a small front wheel small back wheel up a hill?
22. This questions ask two wheels are connected by a chain. Point a is a point on the edge of the large wheel and point B is the point on the edge of a smaller wheel. If larger wheel makes one revolution does point a travel a large distance than point b?
I would say they travel the same distance because point a travels a larger distance but point b travels a smaller circumferance but makes more revolutions.
25.question about anchor I do not get it. I thought point A has more tension because it also has anchor pulling on it.
28. Question about tension. Two weight are hanging by a rope from a ceeling one is only 5 pounds but has a greater distance from the ceeling. One is 10 pounds but has shorter distance from the ceiling. Which one exerts more pull on the ceeling?
I thought it was the heavier one but I am wrong.
33. question about a pulley. I put B since I thought force of gravity would also help.
34 Which systems requires more rope to be pulled. Do not really get it.
https://drive.google.com/drive/folders/1ITIf6mx4RmDoL96IYoH-eY6-jQPh7CUv.
I am having trouble with the following
3. A woman sits in a dragster the beginning of a race. As the light turns green she steps on the accelerator. At the moment the dragster begins to accelerate what is her weight pushing into the seat relative to while the car was stationary?
a.less than while stationary
b. the same a while stationary
c. more than while stationary
Not sure since force=mass(acceleration). I would say her weight would decrease.
11. Where is the current greater in this circuit?
+A<------(--X)----->--B
a. greater at A than B
b.greater b than a
c. the same at A and B
I think electrons flow from positive to negative so greater than A is my answer.
12. X which has a negative charge is positioned between positive charge A and negative charge B. What direction will x move
A.a
B.b
C. remain where it is
15. the rate of heat exchange is faster
a.between a ice cube and 100 celcius glass of water
b.an icecube and 40 celcius water
c.none of the above
I thought since the colder glass is already cold they would exchange heat quicker because the temp difference is less. But heat exchange is faster when temperature difference is large.
20. This one has a picture in the exam. It basically ask what is hard pedaling a bicycle with large front wheel and small back wheel or a small front wheel small back wheel up a hill?
22. This questions ask two wheels are connected by a chain. Point a is a point on the edge of the large wheel and point B is the point on the edge of a smaller wheel. If larger wheel makes one revolution does point a travel a large distance than point b?
I would say they travel the same distance because point a travels a larger distance but point b travels a smaller circumferance but makes more revolutions.
25.question about anchor I do not get it. I thought point A has more tension because it also has anchor pulling on it.
28. Question about tension. Two weight are hanging by a rope from a ceeling one is only 5 pounds but has a greater distance from the ceeling. One is 10 pounds but has shorter distance from the ceiling. Which one exerts more pull on the ceeling?
I thought it was the heavier one but I am wrong.
33. question about a pulley. I put B since I thought force of gravity would also help.
34 Which systems requires more rope to be pulled. Do not really get it.