Betty was enjoying the warm sunshine in a park. After a few minutes, it became windy. Betty felt cold and put on her jacket. Which component helps a robot detect such a change in its environment? A. Sensor
B. Motor
C. Actuator
D. Manipulator

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water