Which branch of physics deals with the study of force, energy, and motion?

A

acoustics

B. mechanics

C.

optics

D. geophysics

Find the pressure exerted by a 3000 N crate that has an area of 2m squared

In a food chain, which trophic level contains the greatest amount of energy? A. decomposers B. producers C. herbivores D. carnivores

Technician A says that the two types of dial indicator faces are balanced and continuous read out. Technician B says that a balanced dial indicator face will have a plus or minus reading. Which technician is correct?

Which of the following is not found in the form of waves? A. Geothermal energy B. Radiant energy C. Sound energy D. Seismic energy

A uniform ladder of length l and mass m1 rests against a frictionless wall. the ladder makes an angle θ with the horizontal.

During a medical condition screening lung capacity testing is a standard procedure. True of false

Which of the following is a unit of energy found in food? a). vitamin b) calorie c) nutrient d) water

As one goes from left to right in a period, which of the following is true? A. The number of protons decreases. B. The number of valence electrons increases. C. both A and B D. none of the above

Which of the following surfaces reflects the most light A yellow cloth B. tree trunk C aluminum foil D. Concrete sidewalk

Which part of an atom has a mass approximately equal to 1/2000 of the mass of a common hydrogen atom? A. nucleus B. electron C. proton D. electron cloud