Which of the following statements is true about scientific theories?
a. scientific theories...
Physics, 29.01.2020 23:52 kaysavage7674
Which of the following statements is true about scientific theories?
a. scientific theories are never proven.
b. scientific theories are proposed answers to questions.
c. scientific theories become hypotheses.
d. scientific theories summarize patterns found in nature.
Answers: 3
Physics, 22.06.2019 05:00
Which car has the most kinetic energy? a. a car of mass 1000 kg with a speed of 3 m/s b. a car of mass 2000 kg with speed 7 m/s c. a car of mass 1000 kg with speed 7 m/s d. a car of mass 2000 kg with speed 3 m/s
Answers: 1
Physics, 22.06.2019 06:40
Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?
Answers: 2
Physics, 22.06.2019 15:00
Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.
Answers: 3
Physics, 22.06.2019 15:50
Decreased sensitivity to an unchanging stimulus is known as
Answers: 3
Mathematics, 23.10.2020 01:01
Biology, 23.10.2020 01:01
Social Studies, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
English, 23.10.2020 01:01
Computers and Technology, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
French, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01
Mathematics, 23.10.2020 01:01