Which portion of the electromagnetic spectrum is used in a microscope?

a. infrared waves

c. visible light

b. gamma rays

d. ultraviolet light?

What submatomic particles participate in chemical bonding?

Ellus Three horizontal forces are pulling on a ring, at rest. F1 is 12.0 N at a 0° angle, and F2 is 18.0 N at a 90° direction. What is the x-component of F3?

Which best describes tropical continental climate during the summer? A. clear, dry weather, B. cloudy, wet weather, C. cold, dry weather, D. hot, dry weather

All the following statements about DC current are true except: 1. Flows bidirectionally 2. Grabs hold of the recipient making it difficult for them to get away from the shock source 3. Dry batteries are one source example 4.

The descendants of a plant or animal considered as a group. A. offspring B. parents C. ancestors D. species

Which best explains why the acoustics underwater affect the Doppler effect? Sound waves can not transfer energy through water. Sound waves can not travel through water. The speed of sound is less in water than in air.

What is the part of the cell that stores food?

2. A circuit consists of a 10.0-ohm resistor, a 15.0-ohm resistor, and a 20.0-ohm resistor connected in parallel across a 9.00-volt battery. What is the equivalent resistance of this circuit? (1) 0.200 12 (3) 4.62 1 (2) 1.95.22 (4) 45.012

What technology makes up the transducer? a. A phased array c. A PET scan b. An x-ray d. A laser

Explain how birthrates and death rates influence the size of population.