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math/chem significant figures
Which of the answers for the following conversions contains the correct number of significant figures? A)2.543 m x 39.4in/1m=100.1924in B)2 L x 1.06qt/1L=2.12 qt C)24.95 min x 1hr/60 min=0.4158 hr D)12.0 ft x 12in/1ft x
asked by kelie on September 18, 2011 
Physics
A rocketpowered hockey puck moves on a horizontal frictionless table. The figure below shows the graphs of vx and vy, the x and ycomponents of the puck’s velocity. The puck starts at the origin. The graph of the Xvelocity is
asked by Eric on September 11, 2015 
chemistry
Suppose you are asked to find the area of a rectangle that is 2.1cm \rm cm wide by 5.6cm \rm cm long. Your calculator answer would be 11.76 cm 2 \rm cm^2 . Now suppose you are asked to enter the answer to two significant
asked by Lindsey on August 29, 2013 
PhysicsTrajectory
A particle's trajectory is described by x =(12t3−2t2)m and y =(12t2−2t)m, where t is in s. What is the particle's speed at t=0s ? What is the particle's speed at t=5.0s ? Express your answer using two significant figures. What
asked by Eric on September 11, 2015 
chemistry
Consider a sample of 10.0 g of the gaseous hydrocarbon C2H6 to answer the following question: How many carbon atoms are present in a 10.0 g sample? (The question is asking for the number of carbons in the sample, not the
asked by bella on December 27, 2019

maths
What is the gradient of a line that has an angle of inclination of 75°? Enter the answer, rounded to 4 significant figures in the box below. the answer should be a number. ???
asked by elizabeth on May 8, 2011 
Math
Find the largest angle for which sine and tangent agree to within two significant figures. Express your answer using two significant figures. Answer in radians ?_?
asked by Anya on September 1, 2009 
physics
The handle of a 27kg lawnmower makes a 36∘ angle with the horizontal. If the coefficient of friction between lawnmower and ground is 0.66, what magnitude of force, applied in the direction of the handle, is required to push the
asked by Anonymous on February 16, 2015 
Chemistry
The oxidation of iodide ion by arsenic acid, H3AsO4, is described by the balanced equation 3I−(aq)+H3AsO4(aq)+2H+(aq)→ I3−(aq)+H3AsO3(aq)+H2O(l) If −Δ[I−]/Δt = 4.8×10−4M/s , what is the value of Δ[I3−]/Δt during
asked by Joe on October 5, 2014 
physics
Find the direction and magnitude of the following vectors. A⃗ =( 22 m )x^+( 15 m )y^ Express your answer in degrees using three significant figures. θA = Part B Express your answer in meters using two significant figures.
asked by ana22 on February 11, 2017 
Chemistry 1
What answer should be reported, with the correct number of significant figures, for the following calculation: (965.43 x 3.91) + 9413.4136 I got 13189 as an answer. Can someone let me know if this is right?
asked by James on September 17, 2011
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