Physics, 03.07.2020 18:01 mdndndndj2981
A light string is wrapped around a solid uniform disk of radius 25.0 cm and mass 0.500 kg. The pulley is initially rotating at 5.00 rad/s. A constant force of 30.0 N is applied to the string, which does not slip, causing the pulley to rotate and the string to unwind. The torque exerted by friction at the axle has a magnitude of 5.00 N-m. Part A Find the angular acceleration of the disk. Express your answer with the appropriate units. Part B Determine the angular velocity of the disk after a time of 0.300 S. Express your answer with the appropriate units. Part C In radians, find the angular displacement of the disk in that time. Input your numerical answer.
Answers: 2
Physics, 21.06.2019 22:00
To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .
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Physics, 22.06.2019 18:30
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Physics, 22.06.2019 18:30
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Physics, 22.06.2019 23:00
Acommon technique in analysis of scientific data is normalization. the purpose of normalizing data is to eliminate irrelevant constants that can obscure the salient features of the data. the goal of this experiment is to test the hypothesis that the flux of light decreases as the square of the distance from the source. in this case, the absolute value of the voltage measured by the photometer is irrelevant; only the relative value conveys useful information. suppose that in part 2.2.2 of the experiment, students obtain a signal value of 162 mv at a distance of 4 cm and a value of 86 mv at a distance of 5.7 cm. normalize the students' data to the value obtained at 4 cm. (divide the signal value by 162.) then calculate the theoretically expected (normalized) value at 5.7 cm.
Answers: 2
A light string is wrapped around a solid uniform disk of radius 25.0 cm and mass 0.500 kg. The pulle...
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