Question To a swimmer under water, objects look blurry. When goggles are worn, however, the images are sharp. Why is this so? Contact with water makes the focal length of the eye change. The swimmer's eyes are adapted to refraction that takes place as light passes from the air into the cornea. The goggles maintain this. The blurriness is caused by the water irritating the swimmer's eyes. The goggles protect the swimmer's eyes. The goggles have a focal length that corrects the vision of the swimme

The magnetic field strength at the north pole of a 2.0-cm-diameter, 8-cm-long Alnico magnet is 0.10 T. To produce the same field with a solenoid of the same size, carrying a current of 1.9 A, how many turns of wire would you need? Express your answer using two significant figures. IVO AED ? For your senior project, you would like to build a cyclotron that will accelerate protons to 10% of the speed of light. The largest vacuum chamber you can find is 44 cm in diameter. Part A What magnetic field strength will you need? Express your answer to two significant figures and include the appropriate units. B- Value Units

A uniform magnetic field is given by B = btk, where b is a constant. Find an expression for the induced current due to the magnetic field in a rectangular loop of width w and length 1, and resistance R. The loop lies in the x - y plane. In what direction is the current, as viewed from the positive z-axis? Your expression should be in terms of the given variables. P linduced Direction Clockwise Anti-clockwise = Submit Answer Tries 0/6

QUESTION 27 Determine the reducing agent in the following reaction. 2 KC2H3O2(aq) + Cu(s) 2 K(s) + Cu(C2H302)2(aq) → Oo OKC2H302 O Cu(C2H302)2 Cu K

discovered about Adam's Lunch (AL), Pizza Tower (PT), and the Dining Hall (DH). 25 liked AL but not PT 15 liked AL only 60 liked AL 65 liked PT 29 liked DH 25 liked PT and AL but not DH 19 liked PT and DH Use the information to create a Venn diagram that represents the results of the survey. (1) Use the Venn diagram to answer the following questions. How discovered about Adam's Lunch (AL), Pizza Tower (PT), and the Dining Hall (DH). 25 liked AL but not PT 15 liked AL only 60 liked AL 65 liked PT 29 liked DH 25 liked PT and AL but not DH 19 liked PT and DH Use the information to create a Venn diagram that represents the results of the survey. (1) Use the Venn diagram to answer the following questions. How many students liked PT or DH? students How many students liked all three? students How many students liked only DH? students

A wire carrying 1.5 A passes through a 51-mT magnetic field. The wire is perpendicular to the field and makes a quarter-circle turn of radius 21 cm as it passes through the field region, as shown in (Figure 1) Part A Find the magnitude of the magnetic force on this section of wire. Express your answer in newtons. ΨΕΙ ΑΣφ ? Figure 1 of 1 F= N

6) A 1.2 cm high object is placed 4.5 cm from in front of a converging lens with a focal length of 8.00 cm. A diverging lens with focal length of -16.00 cm is placed 6.00 cm behind the converging lens. Determine the location and height of the final image and whether the image is real or virtual. (h’=1.36 𝑐𝑚) a 6) A 1.2 cm high object is placed 4.5 cm from in front of a converging lens with a focal length of 8.00 cm. A diverging lens with focal length of -16.00 cm is placed 6.00 cm behind the converging lens. Determine the location and height of the final image and whether the image is real or virtual. (h’=1.36 cm) [2 points]