PHYS 1 quiz 3

the distance through which the force acts

A hydraulic press multiplies a force by 100. This multiplication is done at the expense of

single breath

Assuming all the atoms exhaled by Julius Caesar in his last dying breath are still in the atmosphere, then we probably breathe one of those atoms with each

1.25 kg

At normal atmospheric pressure and temperature, 1 cubic meter of air has a mass of about

3

What is the total number of individual atoms in a water molecule?

pushed to the wall by the atmosphere

When a suction cup sticks to a wall it is

by a force equal to the weight of liquid displaced

When an object is partly or wholly immersed in a liquid, it is buoyed up

toward each other

When you blow air between a pair of closely-spaced Ping-Pong balls suspended by strings, the balls will swing

remains the same

a block of wood with a piece of iron tied to the top of it floats in a bucket of water. if the wood and iron are turned over so that the iron is submerged beneath the wood, the water level at the side of the bucket

water level drops

a large cube of ice containing an iron railroad spike floats in a rim full container of water. when the ice melts

10000kg

a metal block has a density of 5000kg per cubic meter and a volume of 2 cubic meters. what is the mass?

hold air in her lungs

a scuba diver losing her air supply while far beneath the water surface is advised when ascending to

no change in water levels

an ice cube with large air bubbles in it floats in a brim full container of water. when the ice cube melts

less

compared to the volume of a kilogram of feathers, the volume of a kilogram of lead is

less

eight little spheres of mercury form a single sphere. compared to combined surface area of 8 little spheres, the surface area of the big sphere is

astronaut and equal mass of planet would annihilate

if an astronaut landed on a planet conposed of antimatter, there will be an explosion and the

mittens

in cold weather your hands will be warmer if you wear

atmospheric pressure

in drinking soda or water through a straw, we make use of

electrons

the chemical properties of matter are due mostly to their

the sun

the energy responsible for molecular motion in earths atmosphere is

more time per pound is needed

the larger turkey cooked in a conventional oven at a given temp the

neon

two protons to an oxygen produces

plasma phase

when a common fluorescent lamp is lit, the mercury vapor inside is in

both

which has a greater density?

molecules are the smallest subdivisions of matter

which is true

feet

while standing your blood pressure is normally greatest in your