Ch 28 hw exercise 28.10 8 of 9 constants a short current element dl⃗ = (0.500 mm)j^ carries a current of 4.60 a in the same direction as dl⃗ . point p is located at r⃗ = ( -0.730 m)i^+ (0.390m)k^. part a find the magnetic field at p produced by this current element. enter the x, y, and z components of the magnetic field separated by commas. dbxd b x, dby, dbz = nothing t request answer provide feedback

Select the correct answer. anna will wear a black dress when she attends het cousin's wedding. which color(s) does the dress absorb? a. all colors b. no colors c. red and green d. white

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?