Physics, 04.09.2020 06:01 patricklcc07777
A theory is an important part of science because it can be used to A. Create better questions B. Create better experiments C. Test a hypothesis D. Make predictions A student designed an experiment to test the affect of salt on the number of plants that live in water. What is the dependent variable in this experiment? A. The water B. Water temperature C. The number of plants living in the water D. The amount of salt in the water What is an appropriate way to analyze the results of an experiment A. Creating a graph B. Creating a data table C. Making observations D. Asking questions What is a control group used for? A. Making an observation B. Making a comparison C. Designing an experiment D. Making a hypothesis
Answers: 3
Physics, 21.06.2019 22:00, penaabel6202
Which units can be used to measure length or distance? check all that apply. gram meter kilometer liter inch
Answers: 1
Physics, 21.06.2019 22:30, ayoismeisjjjjuan
An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)
Answers: 1
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
A theory is an important part of science because it can be used to A. Create better questions B. Cre...
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