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.