A body on the surface of the earth weighs 400 lb. The radius of the earth is about 4,000 miles. If this same body were placed on a 4,000 mile high tower, its weight would be __________.
Fill in the blank(s) with correct word
[Ques. 2] The proton is made of two up quarks and a down quark. What three quarks form a lambda (baryon number +1, strangeness -1, and electric charge 0)?
a. sdd
b. sud
c. suu
d. uud
e. udd
[Ques. 3] The shapes of planetary orbits are __________.
Fill in the blank(s) with correct word
[Ques. 4] What is an unusual theoretical characteristic of quarks?
a. They have fractional charges.
b. They are outside the concept of electric chargeit just does not apply to them.
c. Even the electron is composed of quarks.
d. Even in quantum mechanical terms, quark momentum is not conserved.
e. They combine to form leptons.
[Ques. 5] As the radius of the orbit of an artificial satellite increases, its orbital period __________.
Fill in the blank(s) with correct word
[Ques. 6] Which of these are the flavors of quarks?
a. Spin, and strangeness, and force they participate in.
b. Charge, mass, and kinetic energy.
c. Up, down, strange, charm, bottom, and top.
d. Up, down, and strange.
e. Neutron, proton, and electron.
[Ques. 7] As you go higher and higher above the surface of the earth, the acceleration of a freely falling body __________.
Fill in the blank(s) with correct word
[Ques. 8] What is a quark?
a. A hypothetical building block for a hadron.
b. A hypothetical building block for a lepton.
c. A hypothetical building block for a neutrino.
d. A hypothetical building block for a positron.
e. A hypothetical exchange particle for the strong nuclear force.
[Ques. 9] As you go higher and higher above the surface of the earth, the mass of a body __________.
Fill in the blank(s) with correct word
[Ques. 10] What makes a particle strange?
a. It can spontaneously change its charge.
b. Its mass is too small to compare to other particles.
c. Its mass is too large to compare to other particles.
d. It decays at an inexplicably fast speed.
e. It lasts much longer than expected.
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