Ultrasound of intensity 1. 50\times 10^2~\mathrm{w/m^2}1. 50×10 2 w/m 2 is produced by the rectangular head of a medical imaging device measuring 3. 00 by 5. 00 cm. What is its power output?.

Abookcase has a mass of 38 kg and the coefficient of friction between it and the floor is 0.82 what is the maximum force of friction between the bookcase and the floor a 372n b 305n c 412n d 449n

Which of the following is not a physical property of mattera. melting pointb.heat of combustionc. viscosityd. boiling point

Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.