![Amazon.com: Bbox Single Sealed 15 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics Amazon.com: Bbox Single Sealed 15 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics](https://m.media-amazon.com/images/I/71zUXDTz4PL._AC_SX385_.jpg)
Amazon.com: Bbox Single Sealed 15 Inch Subwoofer Enclosure - Car Subwoofer Boxes & Enclosures - Premium Subwoofer Box Improves Audio Quality, Sound & Bass - Red & Black Spring Terminals - Charcoal : Electronics
![Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 10^3 N m^2/C . ( Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 10^3 N m^2/C . (](https://i.ytimg.com/vi/_kYiTuUGKwM/maxresdefault.jpg)
Careful measurement of the electric field at the surface of a black box indicates that the net outward flux through the surface of the box is 8.0 × 10^3 N m^2/C . (
![Shade: i) 1/2 of the circles in box (a) ii) 2/3 of the triangles in box (b) iii) 3/5 of the squares in box (c) Shade: i) 1/2 of the circles in box (a) ii) 2/3 of the triangles in box (b) iii) 3/5 of the squares in box (c)](https://d138zd1ktt9iqe.cloudfront.net/media/seo_landing_files/1566631561765113-q4-1566641017.png)
Shade: i) 1/2 of the circles in box (a) ii) 2/3 of the triangles in box (b) iii) 3/5 of the squares in box (c)
![The mass of a box measured by a grocer's balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17g are added to the box. What is (a) total mass The mass of a box measured by a grocer's balance is 2.3 kg. Two gold pieces of masses 20.15 g and 20.17g are added to the box. What is (a) total mass](https://doubtnut-static.s.llnwi.net/static/web-thumb/546227847_web.png)