A capacitor of capacitance 8.1x10-6 F is discharging through a 1.3 M Ω resistor. At what time will the energy stored in the capacitor be half of its initial value? Answer in seconds and upto 1 decimal place.

Which describes an image that can be produced by a concave lens? the image is real and smaller than the object. the image is virtual and larger than the object. the image is virtual and smaller than the object. the image is real and larger than the object.

What best describes a sonar wave? transverse and electromagnetic transverse and mechanical longitudinal and electromagnetic longitudinal and mechanical

How does the entropy of steam compare to the entropy of ice?