Aradio operating at 3.0 volts and a constant
temperature draws a current of 1.8 × 10^−4 ampere.
what is the resistance of the radio circuit?
(1) 1.7 × 10^4 ω (3) 5.4 × 10^−4 ω
(2) 3.0 × 10^1 ω (4) 6.0 × 10^−5 ω

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

Can anybody me with this? ? (picture included.)

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0