A speedboat traveling at a constant velocity of 20 m/s passes a police boat at rest. The police boat decides that this is much too fast and starts his boat 8 seconds
after the speedboat passes. The police boat accelerates at 2.3 m/s2 for 10 s, then
travels at a constant velocity. When and where does the cop catch the speedboat?

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation