Physics, 03.12.2019 17:31 zaniyastubbs9
During an investigation, sam observes the number of hummingbirds that come to his large bird feeder at different times of day. he fills the feeder to the top the first day and counts the number of birds at 6 a. m., noon, and 6 p. m. over ten days. what are the independent and dependent variables in sam’s investigation?
the number of birds is the independent variable, and time is the dependent variable.
time is the independent variable, and the number of birds is the dependent variable.
the type of bird food is the independent variable, and the number of birds is the dependent variable.
the number of birds is the independent variable, and the type of bird food is the dependent variable.
Answers: 2
Physics, 21.06.2019 21:20, mmaglaya1
Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented. b)scientists had not completely finalized their results, which took 30 years. c)cigarettes were cheaply available and media channels were very inefficient. d)cigarette manufacturers were trying hard to bring an alternative into the market
Answers: 3
Physics, 21.06.2019 22:30, jadalysrodriguez
The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force
Answers: 1
During an investigation, sam observes the number of hummingbirds that come to his large bird feeder...
Mathematics, 14.07.2019 16:30
Mathematics, 14.07.2019 16:30