PkW = 0.85 (230 V) (10 amps) / 1000 = 1.96 kW. Php = 0.85 (230 V) (10 amps) / 746 = 2.62 hp. Electrical power is in general rated in watt (W) or horsepower (HP). A horsepower is a unit of power equal to 746 watts or 33,000 lb.ft per minute (or 550 lb.ft per second). A watt is equal to the power produced by a current of 1 amp across the potential difference of 1 volt. A watt is 1/746 of 1 horsepower. Even if the watt is the base unit of electrical power, it is common to rate motor power in either horsepower or kilowatts.
A sonogram of a fetus. A sonogram is used by physicians to observe the growth of a fetus, to calculate their age and due date, and to see the presence of multiple fetuses. It is also used to diagnose internal problems such as pelvic bleeding, and to locate cancerous cells. Ultrasound is used to produce a sonogram. It is also used in industry to measure the purity or uniformity of liquid, to measure the depth of water, and to search for underwater objects such as submarines. Whales and dolphins use ultrasound to communicate.
Sonography (ultrasonography) is widely used in medicine. It is possible to perform both diagnosis and therapeutic procedures, using ultrasound to guide interventional procedures (for instance biopsies or drainage of fluid collections).