Corrosive substances are rarely harmful to human skin.

True False

Most problems addressed by the technological design process have only one solution.

True False

Many phenomena can be modeled as simple harmonic oscillation. For instance, consider water level at a certain beach on a certain day. Suppose high tides occur at 8:00am and 8:00pm, at which times the water level is 1 m above sea level.

A glass marble is rubbed against a piece of silk. As a resultthe piece of fabric acquires extra electrons. What happens to theglass marble? a) The marble has lost the same number ofelectrons acquired by the piece of silk.

A wave has a wavelength of 2.30 m and a frequency of 370.0 Hz. What is the speed of the wave? m/s

What is the wavelength in nm of a light whose first order bright band forms a diffraction angle of 19.0°, and the diffraction grating has 600.0 lines per mm?

Which of the following is NOT a popular home fitness equipment purchase? a. steam room b. treadmill c. free weights d. elliptical trainer

Double the resistance of the resistor by changing it from 10 Ω to 20 Ω. What happens to the current flowing through the circuit?

Who would most likely be required to work with sodium hydroxide? A: a plumber B: a gardener C: a bricklayer D: a mechanic

A roller coaster is entering a vertical loop which has a radius of 25.0 m. If the coaster is traveling at 45.0 m/s as it enters the loop, how much is the centripetal force that you experience? (Assume your mass to be 75.

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

At the beach, describe where or when you would see wave fronts. How are wave fronts useful to surfers?