An new oven cooks a small cake with visible light. If a pan of food (area = 0.036 m2) is 0.475 m away from the 10.2-W light source, how many seconds will it take for the food to absorb 2.00 J of energy from the light?
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A: According to mirror formula 1/f =1/v+1/u
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- An object is placed at a distance of 49 cm in front of a concave lens of focal length 56 cm. Where is the image formed (in cm)?An object placed 20 cm from a concave mirror produces a real image 1.0 cm from the mirror. Find focal distance of the mirror. (Draw ray diagram)The image of the coin in the figure is magnified by a factor of M = 4.4 times, and is a distance d = 9.0 cm from the lens. What is the focal length (in cm) of the lens?
- A concave mirror has a focal length of 18 cm. A candle with a height of 5 cm is 9 cm away from the mirror. Find the location of the image. If the image is real give a positive answer and a virtual image should be a negative answer.For a converging lens, the object lies 13 cm from the lens and the image is 21 cm from the lens on the opposite side. What is the focal length of the lens? Your Answer:You place your friend 75 cm away from a convex mirror with a focal length of -1.5 meters. What does a diagram of this look like including the focal point, focal length, and person?
- For a converging lens, the object lies 15 cm from the lens and the image is 34 cm from the lens on the opposite side. What is the focal length of the lens?In the figure, the thin lens forms a real image of the object 94.0 cm from the object. What is the focal length of the lens? 9.70 mm Object 35.0 cm- Thin LensIf the distance of the object is 250 cm and the distance of the image is 140 cm, I say that the focal length is 390 cm. true or false
- A convex lens has a focal length of 13 cm. A candle with a height of 7 cm is 7 cm away from the lens. Find the location of the image. If the image is real give a positive answer and a virtual image should be a negative answer.What factor indicates if an image is upright or inverted?The image with the diagram serves as a reference for the second image with the actual question. Please answer the question on the image without the diagram.