Ques: Q: The electronic components in electronic devices, used to transmit and change electricity are made of? Read this paragraph and choose the correct option from the provided answers: Electronic components are the parts used in electronic devices such as computers. The components transmit and change electric current. They are made of materials called semiconductors. Choices: - resistors - inverters - microchips - semiconductors A:
Ans: semiconductors

Ques: Q: What is defined as the amount of force acting on a given area? Read this paragraph and choose the correct option from the provided answers: Pressure is defined as the amount of force acting on a given area. It measures how concentrated a force is. Choices: - resistance - density - power - pressure A:
Ans: pressure

Ques: Q: In vascular plants, do primary roots grow downward or to the side? Read this paragraph and choose the correct option from the provided answers: Roots are important organs in all vascular plants. Most vascular plants have two types of roots: primary roots that grow downward and secondary roots that branch out to the side. Together, all the roots of a plant make up a root system . Choices: - to the side - neither - it depends - downward A:
Ans: downward

Ques: Q: Magnetic force is always perpendicular to what? Read this paragraph and choose the correct option from the provided answers: So does the magnetic force cause circular motion? Magnetic force is always perpendicular to velocity, so that it does no work on the charged particle. The particle's kinetic energy and speed thus remain constant. The direction of motion is affected, but not the speed. This is typical of uniform circular motion. The simplest case occurs when a charged particle moves perpendicular to a uniform B -field, such as shown in Figure 22.20. (If this takes place in a vacuum, the magnetic field is the dominant factor determining the motion. ) Here, the magnetic force supplies the centripetal force F c = mv 2 / r . Noting that sin = 1 , we see that. Choices: - speed - sunlight - length - velocity A:
Ans:
velocity