Homework Answers
Vector A (3 4j)ft. Vector B has a magnitude of 12 ft at an angle of...
Vector A (3 4j)ft. Vector B has a magnitude of 12 ft at an angle of 120 ° CCW from the x-axis. This problem DOES need to be written out for your portfolio NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History Determine the x-component of A + 9.6 pts,96% # tries: 2 Show Details Format Check (include units with answer) 2% try penalty Hints: 0,1 Determine the magnitude of A + IB (include units with answer) 10...
please do as many parts as possible. Thank you. 0.8 ft CM 3 1727 3.5 ft 13° 2. H0.42 43 A 258 pound safe containing $5...
please do as many parts as possible. Thank you.
0.8 ft CM 3 1727 3.5 ft 13° 2. H0.42 43 A 258 pound safe containing $5 million dollars is on an incline. Derek is pushing on the safe with a force of P. EXAMPLE 6 ft History Part Description Answer Chk What is the minimum force P Try 3 - your answer of 107lb is not correct. required to prevent the box from sliding down the incline? (include units with...
2 4.2 m A 55 kg person stands on a uniform 17 kg, 6.0 m long...
2 4.2 m A 55 kg person stands on a uniform 17 kg, 6.0 m long ladder resting against a frictionless wall EXAMPLE NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is the magnitude of the force of the wall on ladder? (include units with answer) 6.67 pts. 100% 2% try penalty Hints: 2, # tries: 0 Show Details Format Check What is the magnitude of the normal force of the ground on ladder? (include units...
8. F1-177 lb @ 34° CCW from +x, applied at 24, 41 ] ft 1868 F2139...
8. F1-177 lb @ 34° CCW from +x, applied at 24, 41 ] ft 1868 F2139 lb @ 20° CW from -y, applied at [ 59, 82 ] ft Point A: [ 3, -5] ft NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is F2 in a 3D vector component form? (enter as a vector: [x,y,z]) (include units with answer) [24,41,0ft3 11 pts, 110% Format Check # tries: 0 | Show Details Unit mismatch 296 try...
On a bright sunny afternoon/evening in the Knoxvegas park a 5 ft - 10 in. person...
On a bright sunny afternoon/evening in the Knoxvegas park a 5 ft - 10 in. person measures their shadow to be 6.5 ft long and measures a tree's shadow to be 52 ft long NOTES IMAGES DISCUSS UNITSSTATS HELP Part Desc ription Answer Chk History How tall is the tree? (include units with answer) A: 46.6 ft C: 46.67 ft # tries: 2 show Details Hints: 11 Assuming the sun rises at 8am and sets at 5pm, how much daylight...
F2 37 1b 1180 F1-28 Ib Y-27 73 4.0 in 1.0 in 3.3 in The foot...
F2 37 1b 1180 F1-28 Ib Y-27 73 4.0 in 1.0 in 3.3 in The foot segment shown above is subjected to the pull (F1 and F2) of the two plantarflexor muscles NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is the moment of Fi about point A? (+CCW) (include units with answer) 12.5 pts, 100% # tries: 0 | Show Details Format Check 5% try penalty Hints: 00 What is the moment of F, about...
1528 13.2 ft/s A billiard ball hits a bumper with the velocity shown. The coefficient of...
1528 13.2 ft/s A billiard ball hits a bumper with the velocity shown. The coefficient of restitution between the ball and the wall is 0.72. IMAGES NOTES DISCUSS UNITS STATS HELP PREFERENCES Part Description Answer Save Status What is the speed of the ball the instant it leaves the wall? (include units with answer) 9.50 ft/s Format Check # tries: 2 Show Details 6.72 pts. 96% 2% try penalty
1. 179 F1170N F2 200 N 4 m F3-490 N For each of the three forces...
1. 179 F1170N F2 200 N 4 m F3-490 N For each of the three forces shown, compute the moment (+CCW) about point A NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History Try 2 - CORRECT! 7.92 points added to your score Moment of F (include units with answer) A: -294.94 N-m C: -294.4 N-m WARNING: 5 SF given, 3 SF expected Hints: 1.0 # tries: 2 | Show Details Try 2 - your answer of -1000...
6 t Stream Cross-section Note: Drawing not to scale Depth soundings are taken to approximately determine...
6 t Stream Cross-section Note: Drawing not to scale Depth soundings are taken to approximately determine the cross section of a stream, with the data as shown. By watching a leaf float down the stream, it is determined that the velocity of the stream is approximately 1.8 m/sec. A 44 Inch diameter pipe discharges 12.1 m3/sec of water into the stream just below where the stream cross-section measurements are made. The flows from the pipe and stream combine and go...
A 2790 lb car has a frontal cross-sectional area A of 21.1 ft2, a drag coefficient...
A 2790 lb car has a frontal cross-sectional area A of 21.1 ft2, a drag coefficient Cd of 0.25, and a drive (or tractive) force of 280 lbs. Assume an air density of 2.3x10-3 slug/ft?, Here is a list of frontal areas and drag coefficients for cars. This web site has interesting information on how the physics we are learning is incorporated into video games with cars. NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer chk History 11.11 pts....
Vector A (3 4j)ft. Vector B has a magnitude of 12 ft at an angle of 120 ° CCW from the x-axis. This problem DOES need to be written out for your portfolio NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History Determine the x-component of A + 9.6 pts,96% # tries: 2 Show Details Format Check (include units with answer) 2% try penalty Hints: 0,1 Determine the magnitude of A + IB (include units with answer) 10...
please do as many parts as possible. Thank you.
0.8 ft CM 3 1727 3.5 ft 13° 2. H0.42 43 A 258 pound safe containing $5 million dollars is on an incline. Derek is pushing on the safe with a force of P. EXAMPLE 6 ft History Part Description Answer Chk What is the minimum force P Try 3 - your answer of 107lb is not correct. required to prevent the box from sliding down the incline? (include units with...
2 4.2 m A 55 kg person stands on a uniform 17 kg, 6.0 m long ladder resting against a frictionless wall EXAMPLE NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is the magnitude of the force of the wall on ladder? (include units with answer) 6.67 pts. 100% 2% try penalty Hints: 2, # tries: 0 Show Details Format Check What is the magnitude of the normal force of the ground on ladder? (include units...
8. F1-177 lb @ 34° CCW from +x, applied at 24, 41 ] ft 1868 F2139 lb @ 20° CW from -y, applied at [ 59, 82 ] ft Point A: [ 3, -5] ft NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is F2 in a 3D vector component form? (enter as a vector: [x,y,z]) (include units with answer) [24,41,0ft3 11 pts, 110% Format Check # tries: 0 | Show Details Unit mismatch 296 try...
On a bright sunny afternoon/evening in the Knoxvegas park a 5 ft - 10 in. person measures their shadow to be 6.5 ft long and measures a tree's shadow to be 52 ft long NOTES IMAGES DISCUSS UNITSSTATS HELP Part Desc ription Answer Chk History How tall is the tree? (include units with answer) A: 46.6 ft C: 46.67 ft # tries: 2 show Details Hints: 11 Assuming the sun rises at 8am and sets at 5pm, how much daylight...
F2 37 1b 1180 F1-28 Ib Y-27 73 4.0 in 1.0 in 3.3 in The foot segment shown above is subjected to the pull (F1 and F2) of the two plantarflexor muscles NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History What is the moment of Fi about point A? (+CCW) (include units with answer) 12.5 pts, 100% # tries: 0 | Show Details Format Check 5% try penalty Hints: 00 What is the moment of F, about...
1528 13.2 ft/s A billiard ball hits a bumper with the velocity shown. The coefficient of restitution between the ball and the wall is 0.72. IMAGES NOTES DISCUSS UNITS STATS HELP PREFERENCES Part Description Answer Save Status What is the speed of the ball the instant it leaves the wall? (include units with answer) 9.50 ft/s Format Check # tries: 2 Show Details 6.72 pts. 96% 2% try penalty
1. 179 F1170N F2 200 N 4 m F3-490 N For each of the three forces shown, compute the moment (+CCW) about point A NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer Chk History Try 2 - CORRECT! 7.92 points added to your score Moment of F (include units with answer) A: -294.94 N-m C: -294.4 N-m WARNING: 5 SF given, 3 SF expected Hints: 1.0 # tries: 2 | Show Details Try 2 - your answer of -1000...
6 t Stream Cross-section Note: Drawing not to scale Depth soundings are taken to approximately determine the cross section of a stream, with the data as shown. By watching a leaf float down the stream, it is determined that the velocity of the stream is approximately 1.8 m/sec. A 44 Inch diameter pipe discharges 12.1 m3/sec of water into the stream just below where the stream cross-section measurements are made. The flows from the pipe and stream combine and go...
A 2790 lb car has a frontal cross-sectional area A of 21.1 ft2, a drag coefficient Cd of 0.25, and a drive (or tractive) force of 280 lbs. Assume an air density of 2.3x10-3 slug/ft?, Here is a list of frontal areas and drag coefficients for cars. This web site has interesting information on how the physics we are learning is incorporated into video games with cars. NOTES IMAGES DISCUSS UNITS STATS HELP Part Description Answer chk History 11.11 pts....
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