A 1.10-kg wrench is acting on a nut trying to turn it. The length of the wrench lies directly to the east of the nut. A force 15
1 answer:
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Answer:
0.71 kg
Explanation:
L = length of the steel wire = 3.0 m
d = diameter of steel wire = 0.32 mm = 0.32 x 10⁻³ m
Area of cross-section of the steel wire is given as
A = (0.25) πd²
A = (0.25) (3.14) (0.32 x 10⁻³)²
A = 8.04 x 10⁻⁸ m²
ΔL = change in length of the wire = 1.3 mm = 1.3 x 10⁻³ m
Y = Young's modulus of steel = 20 x 10¹⁰ Nm⁻²
m = mass hanging
F = weight of the mass hanging
Young's modulus of steel is given as
F = 6.968 N
Weight of the hanging mass is given as
F = mg
6.968 = m (9.8)
m = 0.71 kg
Answer:
a.neither of them is correct
b. Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.
c. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration
Explanation:
Fiqure 1) shows the velocity-versus-time graphs for two objects A and B the motion of the ohiecds Zach savs The aranh could represent two cars Zach traveling in opposite directions that pass each other." Victoria says, "No, I think they could be R cally from a bridge, rock A is thrown upward Victoria downward
ans :neither of them is correct
Previous Answers Submit VCorrect Figure 1 of 1
Part B V,
Why is Zach's statement wrong? Check all that apply
. A Zach's statement is not correct, since the objects move in the same direction for some time interval.
Ans: Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.
Previous Answers Request Answer Submit x Incorrect;
Try Again
Part C
Why is Victoria's statement wrong? Check all that apply Victoria's statement is not correct as the objects both should have been thrown either upward or downward
Answer:. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration gGraph
My explanation further from the graph will be that there are opposite bodies, one is accelerating with time , why the other is decelerating with time.
