Physics-model paper 4
A metal block has a density of 5000 kg per cubic meter and a volume of 2 cubic meters. What is the block's mass?
10,000 kg
A metal block has a mass of 5 grams and a volume of 1 cubic centimeter. A piece of the same kind of metal with a volume of 2 cubic centimeters has a density of
5 g/cc
Which is the smallest particle listed below?
A quark.
What prevents satellites such as the space shuttle from falling?
Nothing; they continually fall all around the earth.
Which of these atoms has the most mass?
Radium
Which of the following statements is true?
There are only about 100 different kinds of atoms that combine to form all substances.
An atomic mass unit (amu) is 1/12 the mass of
a carbon atom.
The circular orbit of a satellite orbiting the Earth is characterized by a constant
acceleration. speed. radial distance.
If an astronaut landed on a planet made of antimatter, there would be an explosion as both the astronaut and
an amount of planet matter equal to that of the astronaut would annihilate.
A positron orbiting an antiproton would make up an atom of
anti-hydrogen.
Which has the greater density, a lake full of water or a cup full of lake water?
both have the same density
Stones and bricks are used in construction because they are stronger under
compression.
If a loaf of bread is compressed, its
density increases.
A molecule has
energy. mass. structure.
If the volume of an object were to double while its mass stays the same, its density would
halve.
If object A in your left hand and object B in your right hand both have the same weight density, then they
have equal mass densities.
If one neutron is added to a helium nucleus, the result is
helium.
An iron block is placed in a furnace where it is heated and consequently expands. In the expanded condition, its density
is less
Compared to the volume of a kilogram of feathers, the volume of a kilogram of lead is
less
An apparently "weightless" astronaut in an orbiting shuttle is
like the shuttle, pulled by Earth's gravitation.
The reason a granite block is mostly empty space is that the atoms in the granite are
mostly empty space themselves.
An Earth satellite is in an elliptical orbit. The satellite travels fastest when it is
nearest the Earth.
Atoms heavier than hydrogen were made by
nuclear fusion.
In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
orbital electrons.
A projectile is fired vertically from the surface of the Earth at 10 km/s. The projectile will
rise and fall back to the Earth's surface.
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
single breath.
If we doubled the magnifying power of the most powerful optical microscope in the world, we would
still not be able to see an atom.
What makes an element distinct?
the number of protons
Compared to the atoms that make up the body of an elderly person, the atoms that make up the body of a newborn baby are
the same age
Planets would crash into the sun if it weren't for
their tangential velocities
When a chocolate bar is cut in half, its density is
unchanged
Which of these atoms has the greatest amount of electrical charge in its nucleus?
uranium
Two cubes of the same size, one of solid hard wood and the other of pure rock salt, which one will be easier to smash by a hammer?
wood as it is fibrous intertwined irregular structure.
