Physics, 27.11.2019 01:31 luisdavidflores
Amodel airplane of mass 1.2 kg is attached to a horizontal string and flies in a horizontal circle of radius 6.5 m, making 1.6 revolutions every 8 s. (the weight of the plane is balanced by the upward "lift" force of the air on the wings of the plane.) the accelaration due to the gravity is 9.81 m/s2 . find the speed of the plane. answer in units of m/s.
Answers: 1
Physics, 22.06.2019 03:00
Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system
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Physics, 22.06.2019 04:30
Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?
Answers: 2
Physics, 22.06.2019 04:30
The image shows the positions of a car on a roller coaster track. arrange the cars in order based on their gravitational potential energy. begin with the lowest potential energy and end with the highest.
Answers: 1
Physics, 22.06.2019 05:00
Unpolarized light falls on two polarizer sheets whose transmission axes are at right angles. a third polarizer is placed between the first two so that its axis makes a 52-degree angle with the axis of the first polarizer. a) what fraction of the incident light intensity is transmitted through the first polaroid? b) what fraction of the incident light intensity is transmitted through the second polaroid? c) what is the angle of polarization of the light that enters the third polaroid? d) what fraction of the incident light intensity is transmitted through the third polaroid. e) what happens if the middle polaroid is removed?
Answers: 3
Amodel airplane of mass 1.2 kg is attached to a horizontal string and flies in a horizontal circle o...
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