An ultrasound wave vibrates 30,000 times per second. what is the frequency

What happens to the water in a confined aquifer if a well or fracture intersects it? its depth in the ground will sink downward. it may flow upward to produce an artesian well. it will stay confined between rock layers.

A plane has a takeoff speed of 89.3m/s and requires 1465m to reach that speed determine the acceleration of the plane and the time required to reach this speed

A wave oscillates 5.0 times a second and has a speed of 4.0m/s what is the frequency of this wave

Which would increase the reaction rate? Check all that apply. A. Raising the temperature B. Stirring the reaction C. Raising the activation energy D. Adding a catalyst

Ho Chi Minh led the Communist forces in Indochina and in North Vietnam. a. True b. False Hitler and Mussolini headed two of the Axis powers of World War II. a. True b. False

Most of an atom is empty space. a. True b. False

Two ice skaters, Skater X and Skater Y, are at rest on a horizontal surface made of ice. The friction between the ice and the skaters is negligible.

Hiker goes distance of 4km east start time 9:00am end time 9:45am. what was hike rs velocity

A hot saucepan is placed on a cold bench. Heat will flow from the saucepan to the bench until ... A. the bench is as hot as the saucepan was. B. the saucepan and bench are at the same temperature. C. the saucepan has lost all of its heat. D.

Temperature measures: a. the kinetic energy of the random motion of molecules in an object. b. the kinetic energy of the average motion of molecules in an object. c. the potential energy of an object. d. the motion of an object.