39. Which of the following is true regarding the structure of atoms? A. The amount of charge on a proton is greater than
Posted: Sun Feb 13, 2022 8:54 am
39. Which of the following is true regarding the
structure of atoms?
A. The amount of charge on a proton is greater than the amount
of charge on an electron.
B. Isotopes of an element differ in the number of protons in the
nucleus.
C. The mass of each electron is the same as the mass of each
proton.
D. The neutrons make up a significant part of the atomic
mass
47. A student is assigned the task of measuring the mass
of one tennis ball using a scale for which the zero adjustment on
the balance is not working. The student is given three balls and
the can in which they were packaged. Which of the following
strategies will provide the best determination of the correct
mass?
A. Weigh each ball separately and average the results.
B. Weigh the empty can; weigh the can with a ball in it and compute
the difference between the two.
C. Weigh the three balls together and divide by three.
D. Weigh each ball separately, adjusting the beam weights from
below first and then from above. Then, average the results.
49. A researcher writes a grant proposal to repeat an
experiment that was recently published by another researcher. Which
of the following statements best supports the grant
proposal?
A. Funding this grant proposal will allow this laboratory to
continue to study this topic.
B. Funding this important research will benefit science in the long
term.
C. Repeating the published work will provide independent
confirmation of the results.
D. Repeating published work with changed variables will extend the
previous results.
50. At the instant that an elastic falling object strikes
the ground and becomes compressed, which of the following energy
transformations occurs?
A. Gravitational to electric
B. Potential to kinetic
C. Electric to gravitational
D. Kinetic to potential
structure of atoms?
A. The amount of charge on a proton is greater than the amount
of charge on an electron.
B. Isotopes of an element differ in the number of protons in the
nucleus.
C. The mass of each electron is the same as the mass of each
proton.
D. The neutrons make up a significant part of the atomic
mass
47. A student is assigned the task of measuring the mass
of one tennis ball using a scale for which the zero adjustment on
the balance is not working. The student is given three balls and
the can in which they were packaged. Which of the following
strategies will provide the best determination of the correct
mass?
A. Weigh each ball separately and average the results.
B. Weigh the empty can; weigh the can with a ball in it and compute
the difference between the two.
C. Weigh the three balls together and divide by three.
D. Weigh each ball separately, adjusting the beam weights from
below first and then from above. Then, average the results.
49. A researcher writes a grant proposal to repeat an
experiment that was recently published by another researcher. Which
of the following statements best supports the grant
proposal?
A. Funding this grant proposal will allow this laboratory to
continue to study this topic.
B. Funding this important research will benefit science in the long
term.
C. Repeating the published work will provide independent
confirmation of the results.
D. Repeating published work with changed variables will extend the
previous results.
50. At the instant that an elastic falling object strikes
the ground and becomes compressed, which of the following energy
transformations occurs?
A. Gravitational to electric
B. Potential to kinetic
C. Electric to gravitational
D. Kinetic to potential