The light intensity (3.431x10^2) cm from a point source is (1.3730x10^0) kW/m². What is the intensity (2.32713x10^2) m away from the same source? Express your result with four significant figures in W/m². Note: Your answer is assumed to be reduced to the highest power possible.
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- Please help. This problem involves finding the radius and volume of a platinum atom using its density. Thank you.The electrical power, P (in watts), transformed by an electrical appliance is given by P = f(i) = 9i2 , where i is the electrical current flowing through the appliance, in amps. Find f(10) and f'(10), and interpret them in the context of this problem.In laser eye surgery, each laser pulse has power of 70 kW. The beam focuses on a circle of 0.6 mm radius. The laser beam intensity is GW/m?.
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- The sonar unit on a boat is designed to measure the depth of fresh water (p = 1.00 x 103 kg/m³, Bad = 2.20 x 109 Pa). When the boat moves into salt water (p = 1025 kg/m³, Bad = 2.37 x 109 Pa), the sonar unit is no longer calibrated properly. In salt water, the sonar unit indicates the water depth to be 8.87 m. What is the actual depth (in m) of the water? Number i ! Units mGiven u = −7i − 5j and v = −10i − 9j, what is projvu? a −9.937i − 8.943j b −6.956i − 4.968j c −6.354i − 5.718j d −4.448i − 3.177jHullo! Physics student here! I'm struggling to figure out how to go about answering this question ): In one study of an adult bat, with a mass of 3.3 g and a wingspan of 111 mm, scientists found that this bat emitted a high-pitched sound that travelled 25.5 m in 78.7 ms. Calculate the speed of sound (in m/s) in this situation. Hint: Enter only the numerical part of your answer rounded to the nearest integer.