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Question 3 An 18 cm diameter ultracentrifuge produces an extraordinary large centripetal acceleration of 250 What...
This question comes from a centripetal forces lab in relation to uniform circular motion. What weight...
This question comes from a centripetal forces lab in relation to uniform circular motion. What weight could be supported by a rotating object if it has a mass of 98 g and if it were revolving in a horizontal circle, 50 cm in diameter and making 240 rev/min?
1. John (who is 95 kg) drives his car over an absurdly large half-circle speedbump with...
1. John (who is 95 kg) drives his car over an absurdly large half-circle speedbump with a radius of 5 meters. Given that his normal weight is 930 N and his apparent weight at the top of the speed-bump was 246 N, how fast did he drive over the speed bump? 2. When working in circular motion problems, what do we define as always being the positive direction? 3. When in circular motion, the net force points in what direction?...
QUESTION 6 How tall must a water-filled manometer be to measure blood pressures as high as...
QUESTION 6 How tall must a water-filled manometer be to measure blood pressures as high as 206 mm Hg? (Express your answer in Sl units with 3 or more significant figures) ( Phpg) Density of water = 1 g/cm? Density of mercury 136 g/cm? QUESTION 7 What force must be exerted on the master cylinder of a hydraulic in to support the weight of a 1.231 kg car resting on the slave cylinder? The master cylinder has a 27 cm...
Question 3: (12 marks) (1) The ideal diameter of wheel bearings produced in your plant is...
Question 3: (12 marks) (1) The ideal diameter of wheel bearings produced in your plant is 7.7 mm. You have installed a new machine for producing and polishing the bearings. The standard deviation of the diameters of the bearings it produces is 0.11 mm. At 95% condence, how large a sample is needed to obtain a margin of error of 0.01 mm? (2) Amelia wants to estimate the mean weight of apples in her orchard. She'll sample n apples and...
QUESTION 5 Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider...
QUESTION 5 Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 70 kg, and the gauge pressure in the tires is 5.4 105 Pa Express your answer in cm2 with 3 or more significant figures. QUESTION 6 How tall must a water-filed manometer be to measure blood pressures as high as 206...
QUESTION 18 6 points Save Answer A large cooperation has quality control over its fertilizers. The...
QUESTION 18 6 points Save Answer A large cooperation has quality control over its fertilizers. The fertilizes are composed of nitrogen. The fertilizer requires 3 mg of nitrogen. The distribution of the percentage of nitrogen is unknown with a mean of 2.5 mg and a standard deviation of 0.1. A specialist randomly checked 100 fertilizer samples. What is the probability that the mean of the sample of 100 fertilizers less than 2 mg? QUESTION 19 10 points Save Answer A...
QUESTION 1 Which one of the following is a vector? Area Pressure Force Density QUESTION 2...
QUESTION 1 Which one of the following is a vector? Area Pressure Force Density QUESTION 2 Which one of the following is also the Sl unit for pressure? kgi(m.s2) kg.m/s2 kg.m/s kglm2 52 QUESTION 3 Gold is sold by the troy ounce (31.103 g) What is the volume of 14 troy ounce of pure gold? (Express your answer in cm with 3 or more significant figures) Density of gold 19.3 g/am QUESTION 4 The left side of the heart creates...
Assignment 4- Acrosols Note: Each question is worth 4 points. What is the diameter of a...
Assignment 4- Acrosols Note: Each question is worth 4 points. What is the diameter of a spherical particle if it has a volume of 1.96 m? What is its surface area? 2. Lycopodium spores are essentially monodisperse, being approximately 10 m in diameter. If these spores have a density of 1.7 gm/cm, how many spores are there in a 1 gram sample? 3. In smoking one, non-filtered cigarette, a smoker inhales 350 mL of acrosol containing 20 mg of tobacco...
Question 3 On 21 January 2018, Rocket Lab launched a 10 500 kg rocket from the...
Question 3 On 21 January 2018, Rocket Lab launched a 10 500 kg rocket from the Mahia Penin- sula. It carried a 250 kg payload that included the 8 kg Humanity Star, which is like a large disco ball in size and shape. (a) On the launchpad, the rocket has a mass of 10 500 kg and produces 160 kN of vertical thrust. Assuming that the acceleration is constant and motion is in a straight line, find the speed of...
Questions 7-10 refer to the following: The heights (in cm) of a sample of plants grown...
Questions 7-10 refer to the following: The heights (in cm) of a sample of plants grown with different fertilizers (or no fertilizer) are summarized in the side-by-side quantile boxplots shown below. A numerical summary of each 40 30 20 10 0 No Fertilizer GrowFast SuperPlant n min Q1 median Q3 max meand dev 30 3 14 21 25 28 18.8 6.1 GrowFast 25 12 18 23 28 35 23.2 4.3 SuperPlant 20 15 19 23 30 38 25.3 52 No...
QUESTION 6 How tall must a water-filled manometer be to measure blood pressures as high as 206 mm Hg? (Express your answer in Sl units with 3 or more significant figures) ( Phpg) Density of water = 1 g/cm? Density of mercury 136 g/cm? QUESTION 7 What force must be exerted on the master cylinder of a hydraulic in to support the weight of a 1.231 kg car resting on the slave cylinder? The master cylinder has a 27 cm...
QUESTION 5 Assuming bicycle tires are perfectly flexible and support the weight of bicycle and rider by pressure alone, calculate the total area of the tires in contact with the ground. The bicycle plus rider has a mass of 70 kg, and the gauge pressure in the tires is 5.4 105 Pa Express your answer in cm2 with 3 or more significant figures. QUESTION 6 How tall must a water-filed manometer be to measure blood pressures as high as 206...
QUESTION 18 6 points Save Answer A large cooperation has quality control over its fertilizers. The fertilizes are composed of nitrogen. The fertilizer requires 3 mg of nitrogen. The distribution of the percentage of nitrogen is unknown with a mean of 2.5 mg and a standard deviation of 0.1. A specialist randomly checked 100 fertilizer samples. What is the probability that the mean of the sample of 100 fertilizers less than 2 mg? QUESTION 19 10 points Save Answer A...
QUESTION 1 Which one of the following is a vector? Area Pressure Force Density QUESTION 2 Which one of the following is also the Sl unit for pressure? kgi(m.s2) kg.m/s2 kg.m/s kglm2 52 QUESTION 3 Gold is sold by the troy ounce (31.103 g) What is the volume of 14 troy ounce of pure gold? (Express your answer in cm with 3 or more significant figures) Density of gold 19.3 g/am QUESTION 4 The left side of the heart creates...
Assignment 4- Acrosols Note: Each question is worth 4 points. What is the diameter of a spherical particle if it has a volume of 1.96 m? What is its surface area? 2. Lycopodium spores are essentially monodisperse, being approximately 10 m in diameter. If these spores have a density of 1.7 gm/cm, how many spores are there in a 1 gram sample? 3. In smoking one, non-filtered cigarette, a smoker inhales 350 mL of acrosol containing 20 mg of tobacco...
Question 3 On 21 January 2018, Rocket Lab launched a 10 500 kg rocket from the Mahia Penin- sula. It carried a 250 kg payload that included the 8 kg Humanity Star, which is like a large disco ball in size and shape. (a) On the launchpad, the rocket has a mass of 10 500 kg and produces 160 kN of vertical thrust. Assuming that the acceleration is constant and motion is in a straight line, find the speed of...
Questions 7-10 refer to the following: The heights (in cm) of a sample of plants grown with different fertilizers (or no fertilizer) are summarized in the side-by-side quantile boxplots shown below. A numerical summary of each 40 30 20 10 0 No Fertilizer GrowFast SuperPlant n min Q1 median Q3 max meand dev 30 3 14 21 25 28 18.8 6.1 GrowFast 25 12 18 23 28 35 23.2 4.3 SuperPlant 20 15 19 23 30 38 25.3 52 No...
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Question 501 pts
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