Homework Answers
1. A pinhole camera is made in a 16 x 16 x 40 cm shoebox, with...
1. A pinhole camera is made in a 16 x 16 x 40 cm shoebox, with an aperture made in the 16 cm x 16 cm side. What is the closest you could stand to completely capture the image of your 1.83 m tall physics instructor? 2. A hallway is 6 m long with 3 m high ceilings. There is a very large mirror on the ceiling. What angle should you shine a laser beam from the floor of one...
Problem #2: 25 points A 24m long, horizontal beam is attached to a wall by a...
Problem #2: 25 points A 24m long, horizontal beam is attached to a wall by a hinge. A support cable, 26 m long, is attached to the other end of the beam and attached to the wall 10m above the hinge, forming a 5, 12, 13 right triangle (HINT: leave sin and cos as a simple ratio of integers). The load hanging from the very end of the beam is 1000 Kg and the beam has a mass of 300Kg....
(8%) Problem 2: Two flat mirrors are connected to each other such that they make an...
(8%) Problem 2: Two flat mirrors are connected to each other such that they make an angle of w. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of 0 = 138 degrees with respect to the initial beam (see figure). Randomized Variables m 0= 138 degrees m Otheexpertta.com A 50% Part (a) Write an expression for the angle. v. between the mirrors. W= Grade...
Deep in the physics and astronomy basement storeroom, you find a very large concave spherical mirror from an old telescope. The mirror is 2 m across, and has a radius of curvature of 14.0 m. Because...
Deep in the physics and astronomy basement storeroom, you find a very large concave spherical mirror from an old telescope. The mirror is 2 m across, and has a radius of curvature of 14.0 m. Because this is just a small piece of such a large sphere, the angle of incidence for on-axis rays will always be below 5°, minimizing spherical aberration You try out the mirror for use as a full-length wall mirror. If you look at yourself in...
3) (40 pts) The EXTERNAL 35 kN force P is applied to the end of a 2 m long cantilever beam with t...
3) (40 pts) The EXTERNAL 35 kN force P is applied to the end of a 2 m long cantilever beam with the given cross section. The force acts through the shear center, forming an angle of 35 with the horizontal axis. The x, y axes pass through the centroid C. The y-axis can be assumed to coincide with the right- hand edge of the vertical section. Determine (a) the normal bending stress at Point A, (b) normal bending stress...
(6%) Problem 2: A 0.9 m long section of cable carrying current to a car starter...
(6%) Problem 2: A 0.9 m long section of cable carrying current to a car starter motor makes an angle of 60° with the Earth's 5 × 10 T magnetic field Randomized Variables 1=0.9 m B=5×10-5 T F1 = 9.5 × 10-3 N Δ 50% Part (a) What is the current in A when the wire experiences a force of 9.5 x 10-3 N? Grade Summary 0% 100% Potential sin cotan0asin0 atan0acotan s coshOtanhO) cotanh0 tan() acos) sinhO Submissions Attempts...
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions....
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions. (2) You must use blank 8"x11" printer paper. (3) Begin each problem on a new page, and put your name on each page. Staple your pages together. 4) Only write on one side of the page. (5) You must write up your solutions independently (i.e. don't copy anyone else's solutions), using your own words and thought process. You must show all of your work....
6. An astronaut ona distant planet wants to determine its acceleration due to gravity. The astronaut...
6. An astronaut ona distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +15 m/s and measures a time of 20.0 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to gravity on this planet? See Diagram below: 20.0s v,15 m/s Show your work below: 7. Problem using vectors: A sailboat sails for 1 hr at 4 km/hr (relative to the...
I need help to write a nice introduction for experiment 6 please ( no hands write ) typing Thank you HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Ef...
I need help to write a nice introduction for experiment 6
please ( no hands write ) typing
Thank you
HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Effect of Cooling Rate One of the most convenient methods for controlling the properties of a given steel, i.e., a steel whose composition is already fixed, consists of austenizing the steel and ten cooling to room temperature at some predetermined rate. A variation of cooling rates...
Match the following: 2. Adam Smith 3. Karl Marx 4. John Maynard Keynes Choices: (2 are...
Match the following: 2. Adam Smith 3. Karl Marx 4. John Maynard Keynes Choices: (2 are not used.) a. invented capitalism b. invented socialism c. founder of modern macroeconomics d. founder of modern market economics e. predicted the end of capitalism 5. If a firm has trouble selling its good, it can a. lower price. b. increase demand. c. decrease supply. d. both a) and b) are correct. 6. People often pay too much for goods because they are not...
1. A pinhole camera is made in a 16 x 16 x 40 cm shoebox, with an aperture made in the 16 cm x 16 cm side. What is the closest you could stand to completely capture the image of your 1.83 m tall physics instructor? 2. A hallway is 6 m long with 3 m high ceilings. There is a very large mirror on the ceiling. What angle should you shine a laser beam from the floor of one...
Problem #2: 25 points A 24m long, horizontal beam is attached to a wall by a hinge. A support cable, 26 m long, is attached to the other end of the beam and attached to the wall 10m above the hinge, forming a 5, 12, 13 right triangle (HINT: leave sin and cos as a simple ratio of integers). The load hanging from the very end of the beam is 1000 Kg and the beam has a mass of 300Kg....
(8%) Problem 2: Two flat mirrors are connected to each other such that they make an angle of w. A laser enters the system and first reflects off the bottom mirror, then the top mirror. When the beam exits it makes an angle of 0 = 138 degrees with respect to the initial beam (see figure). Randomized Variables m 0= 138 degrees m Otheexpertta.com A 50% Part (a) Write an expression for the angle. v. between the mirrors. W= Grade...
Deep in the physics and astronomy basement storeroom, you find a very large concave spherical mirror from an old telescope. The mirror is 2 m across, and has a radius of curvature of 14.0 m. Because this is just a small piece of such a large sphere, the angle of incidence for on-axis rays will always be below 5°, minimizing spherical aberration You try out the mirror for use as a full-length wall mirror. If you look at yourself in...
3) (40 pts) The EXTERNAL 35 kN force P is applied to the end of a 2 m long cantilever beam with the given cross section. The force acts through the shear center, forming an angle of 35 with the horizontal axis. The x, y axes pass through the centroid C. The y-axis can be assumed to coincide with the right- hand edge of the vertical section. Determine (a) the normal bending stress at Point A, (b) normal bending stress...
(6%) Problem 2: A 0.9 m long section of cable carrying current to a car starter motor makes an angle of 60° with the Earth's 5 × 10 T magnetic field Randomized Variables 1=0.9 m B=5×10-5 T F1 = 9.5 × 10-3 N Δ 50% Part (a) What is the current in A when the wire experiences a force of 9.5 x 10-3 N? Grade Summary 0% 100% Potential sin cotan0asin0 atan0acotan s coshOtanhO) cotanh0 tan() acos) sinhO Submissions Attempts...
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions. (2) You must use blank 8"x11" printer paper. (3) Begin each problem on a new page, and put your name on each page. Staple your pages together. 4) Only write on one side of the page. (5) You must write up your solutions independently (i.e. don't copy anyone else's solutions), using your own words and thought process. You must show all of your work....
6. An astronaut ona distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +15 m/s and measures a time of 20.0 s before the rock returns to his hand. What is the acceleration (magnitude and direction) due to gravity on this planet? See Diagram below: 20.0s v,15 m/s Show your work below: 7. Problem using vectors: A sailboat sails for 1 hr at 4 km/hr (relative to the...
I need help to write a nice introduction for experiment 6
please ( no hands write ) typing
Thank you
HEAT TREATMENT OF STEELS EXPERIMENT 6 EXPERIMENT 6 HEAT TREATMENT OF STEELS THEORY The Effect of Cooling Rate One of the most convenient methods for controlling the properties of a given steel, i.e., a steel whose composition is already fixed, consists of austenizing the steel and ten cooling to room temperature at some predetermined rate. A variation of cooling rates...
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