Homework Answers
18. A ball is thrown upward from an 80-ft tower with an initial vertical speed of...
18. A ball is thrown upward from an 80-ft tower with an initial vertical speed of 40 ft/s. If air resistance is ignored, the ball's speed when it reaches the ground will be A. 67 ft/s. B. 130 ft/s. C. 120 ft/s D. 49 ft/s. E. 82 ft/s.
An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground.
a. An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground. Will the rock reach the top of the wall? If so, how fast is it moving when it reaches the top. If not, what initial speed must it have to reach the top? b. To defend the castle, a rock is thrown downwards from the top of the wall with...
a. An attacker at the base of a castle wall 3.65 m high throws a rock...
a. An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s from a height of 1.55 m above the ground. Will the rock reach the top of the wall? If so, how fast is it moving when it reaches the top. If not, what initial speed must it have to reach the top? b. To defend the castle, a rock is thrown downwards from the top of the wall...
VB = 10 ft/s B D The disk shown on the figure is rotating counterclockwise at...
VB = 10 ft/s B D The disk shown on the figure is rotating counterclockwise at the same time it slips on the surface (notice the difference in the speeds of points A and B). 0.8 450 CN30° For the instant shown: VA = 5 ft/s a) Find the location of the instantaneous center of rotation. Use the space below to do the required velocity diagram. (15 points) b) Determine the velocity of the center of the disk (point C)...
please help. this is the second time I post this. 0 Attempt 3 Young Jeffrey is...
please help. this is the second time I post this.
0 Attempt 3 Young Jeffrey is bored, and decides to throw some things out of the window for fun. But since he is also very curi decides to do so in a controlled way. Jeffrey takes a rock, his tennis ball, and one of his father's golf balls and sets the sill of an open window. Then, he uses a flat board to carefully push them all out of the...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet tnll on earth She lands on planet Z and is measured on earth? 5. Am syiect that is orbiting the Farth at a beight of tree Ear adi from the center of the Earth bas a weight or iNm erthis 6. A taxxicab moves ive blocks dhse north, five blocks due east and another two blocks due north. Assume all blocks are of equai...
A B C D E F G H I gene - estrogen + estrogen (fig74) Gene...
A B C D E F G H I gene - estrogen + estrogen (fig74) Gene expressed higher in tumor vs normal cells Gene expressed lower in tumor vs normal cells Gene expressed the same in tumor vs normal cells Gene expressed neither in tumor nor normal cells The figure above shows a portion of the results from an experiment comparing the mRNA levels determined by RNAseq in cells extracted from an ovarian tumor to normal ovary cells. Both groups...
What is the momentum of a 108-kilogram fullback moving at 5.60 m/s ? A 605 kg...
What is the momentum of a 108-kilogram fullback moving at 5.60 m/s ? A 605 kg • m/s B. 19.3 kg • m/s C. 0.0519 kg. m/s D. 1690 kg . m/s 33. (1 point) Why do dishes remain on a table if the slick tablecloth under them is pulled rapidly 14. (2 pts) Compare the concepts "mass" and "weight". 35. (2 pt) Will a golf ball and a sheet of paper dropped from a bridge simultaneously strike the water...
24) Acat falls from a third-story WOW above the ground, its speed is a) 98m's b)...
24) Acat falls from a third-story WOW above the ground, its speed is a) 98m's b) 8.Om's c) 13m's d) 13 m/s2 e) 1.6x10m's 25) A doctor, in between surgery, drives a golfball at an angle of exactly 10 with respect to the horizontal. The ball first hits the ground 210 m from the tee. The ball must have left the tee with an initial speed of about a) 2.1x10m's b) 78.5 m's c)9.8 m's d) 46 m/s 6)65 m/s....
(1) An object moves with constant acceleration 3.26 m/s and over a time interval reaches a...
(1) An object moves with constant acceleration 3.26 m/s and over a time interval reaches a final velocity of 10.8 m/s. a. If its initial velocity 5.39 m/s, what is its displacement during the time interval? Submit Answer Tries 0/10 b. What is the distance it travels during this interval? Submit Answer Tries 0/10 c. If its initial velocity is -5.39 m/s, what is its displacement during the time interval? Submit Answer Tries 0/10 d. What is the total distance...
18. A ball is thrown upward from an 80-ft tower with an initial vertical speed of 40 ft/s. If air resistance is ignored, the ball's speed when it reaches the ground will be A. 67 ft/s. B. 130 ft/s. C. 120 ft/s D. 49 ft/s. E. 82 ft/s.
VB = 10 ft/s B D The disk shown on the figure is rotating counterclockwise at the same time it slips on the surface (notice the difference in the speeds of points A and B). 0.8 450 CN30° For the instant shown: VA = 5 ft/s a) Find the location of the instantaneous center of rotation. Use the space below to do the required velocity diagram. (15 points) b) Determine the velocity of the center of the disk (point C)...
please help. this is the second time I post this.
0 Attempt 3 Young Jeffrey is bored, and decides to throw some things out of the window for fun. But since he is also very curi decides to do so in a controlled way. Jeffrey takes a rock, his tennis ball, and one of his father's golf balls and sets the sill of an open window. Then, he uses a flat board to carefully push them all out of the...
A) 707N B) 856N C 173N D) IOON E) 14N Ann the Astronaut is 5.90 feet tnll on earth She lands on planet Z and is measured on earth? 5. Am syiect that is orbiting the Farth at a beight of tree Ear adi from the center of the Earth bas a weight or iNm erthis 6. A taxxicab moves ive blocks dhse north, five blocks due east and another two blocks due north. Assume all blocks are of equai...
A B C D E F G H I gene - estrogen + estrogen (fig74) Gene expressed higher in tumor vs normal cells Gene expressed lower in tumor vs normal cells Gene expressed the same in tumor vs normal cells Gene expressed neither in tumor nor normal cells The figure above shows a portion of the results from an experiment comparing the mRNA levels determined by RNAseq in cells extracted from an ovarian tumor to normal ovary cells. Both groups...
What is the momentum of a 108-kilogram fullback moving at 5.60 m/s ? A 605 kg • m/s B. 19.3 kg • m/s C. 0.0519 kg. m/s D. 1690 kg . m/s 33. (1 point) Why do dishes remain on a table if the slick tablecloth under them is pulled rapidly 14. (2 pts) Compare the concepts "mass" and "weight". 35. (2 pt) Will a golf ball and a sheet of paper dropped from a bridge simultaneously strike the water...
24) Acat falls from a third-story WOW above the ground, its speed is a) 98m's b) 8.Om's c) 13m's d) 13 m/s2 e) 1.6x10m's 25) A doctor, in between surgery, drives a golfball at an angle of exactly 10 with respect to the horizontal. The ball first hits the ground 210 m from the tee. The ball must have left the tee with an initial speed of about a) 2.1x10m's b) 78.5 m's c)9.8 m's d) 46 m/s 6)65 m/s....
(1) An object moves with constant acceleration 3.26 m/s and over a time interval reaches a final velocity of 10.8 m/s. a. If its initial velocity 5.39 m/s, what is its displacement during the time interval? Submit Answer Tries 0/10 b. What is the distance it travels during this interval? Submit Answer Tries 0/10 c. If its initial velocity is -5.39 m/s, what is its displacement during the time interval? Submit Answer Tries 0/10 d. What is the total distance...
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