4. 5.10 from textbook the dynamic behavior of the liquid level in a leg of a manometer tube, responding to a change in pressure, is given by where h′(t) is the level of fluid measured with respect to the initial steady-state value, p′(t) is the pressure change, and r, l, g, rho, and μ are constants. (a) rearrange this equation into standard gain-time constant form and find expressions for k, τ, ζ in terms of the physical constants. (b) for what values of the physical constants does the manometer response oscillate? (c) would changing the manometer fluid so that rho (density) is larger make its response more oscillatory, or less? repeat the analysis for an increase in μ (viscosity).

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

What is the relationship between atmospheric pressure and the density of gas particles in an area of increasing pressure? (2 points) as air pressure in an area increases, the density of the gas particles in that area decreases. as air pressure in an area increases, the density of the gas particles in that area increases. as air pressure in an area increases, the density of the gas particles in that area remains constant. as air pressure in an area increases, the density of the gas particles in that area increases and decreases in an alternating pattern. 3. which of the following correctly describes a way in which earth's atmosphere interacts with the geosphere? (2 points) it contains gases that living organisms breathe. it contains gases that trap incoming solar radiation. it provides a medium for cycles that provide nutrients to living organisms. it provides a medium for water to move between earth's surface and the air. 4. which of the following is considered a drawback to using wind energy as a source of power? (2 points) wind energy is nonrenewable. wind energy produces large amounts of air pollution. wind turbines can kill birds that fly through the rotors. wind turbines are built too close to major population centers. 5. a meteorologist predicts that the weather in a region will soon change from clear skies to probable thunderstorms. prior to making this prediction, what did the meteorologist most likely observe on a barometer? (2 points) the barometer fell slightly. the barometer fell substantially. the barometer rose slightly. the barometer rose substantially. 6. which of the following do meteorologists not typically use weather balloons to record? (2 points) atmospheric pressure cloud types humidity temperature 7. during which step in the can crush lab did water vapor force air from the can? (2 points) the can was filled nearly to the top with water. the can was placed on the hot stove top burner for several minutes. the can was removed from the hot stove top burner. the can was placed upside-down in the water-filled pan.

According to newton’s first law of motion, which force is expected to cause a body to accelerate?