Physics, 03.06.2021 14:00 aliciapinto13
Help please
Please read each question and the options carefully, select the best response or write your short answer.
1. What name is given to this principle?
A conservation of mass
B energy principle
C mass-energy theorem
D conservation of energy
2. Mechanical work done on a falling object causes what energy transformation?
A from kinetic energy to gravitational potential energy from thermal energy to gravitational potential energy
B
C D from gravitational potential energy to kinetic energy from gravitational potential energy to thermal energy
3. Which option gives the correct information for a falling object?
A maximum kinetic energy and maximum gravitational
potential energy is achieved at the same time
when kinetic energy is maximum, gravitational
B
potential energy is minimum minimum kinetic energy and minimum gravitational C
potential energy is achieved at the same time when kinetic energy is minimum, gravitational D
potential energy is minimum
4. Which equation is used by the light gate (photogate) to calculate the speed?
A 5 cm / elapsed time
B 5 m/ elapsed time
C D elapsed time / 5 cm elapsed time / 5 m
5. The main reason we repeat our measurements is
to decrease the reliability
ABCD to increase the precision
to increase the reliability
D to decrease the precision
Answers: 2
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Physics, 22.06.2019 21:30
Ineed this now one scientist feels that the changes in global climatic patterns may be good for the health of the biosphere. another scientist feels that sharp changes in climatic patterns could result in the extinction of the biosphere. which of these is the most likely reason the two scientists gave conflicting opinions on the impact of changes in the global climatic pattern? they do not have enough knowledge on the topic. they did not discuss the issue among themselves. they believe conflicting opinion strengthens science. they study different areas of science and have different scientific focuses.
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