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You are interested in obtaining information about the performance of students in your statistics class and seeing how this performance is affected by several factors such as sex. To do this you are going to give a questionnaire to all students in the class. Give two questions for which the response is categorical and two questions for which the response is quantitative. For the categorical variables, give the possible values.
A heat engine does 180J of work per cycle while exhausting 440J of waste heat. What is the engine's thermal energy
A bat can detect very small objects, such as an insect whose length is about equal to one wavelength of the sound the bat makes. If a bat emits chirps at a frequency of 61.0 kHz, and if the speed of sound in air is339 m/s, what is the smallest insect..
Two blocks are placed in contact on a horizontal frictionless surface. The smaller box has less mass than the larger box. A force F is applied to the small box as shown so that the boxes accelerate to the right.
An ideal gas is compressed from a volume of 400 cm^3 to a volume of 150 cm^3 slowly and isothermally in a piston-cylinder system. If the final pressure is 100 kPa, determine a) the work done on the gas and b) the heat transfer (specify whether the..
You are listening to a pure tone of A440 (440. Hz). Without realizing it, you are doing this by noticing the time interval between the firing of the hair cells in your basilar membrane, What is this interval
The Physics of Radiology shows the MTF of a screen film for mammography and the MTF of a high-speed screen-film (curves C and D, panel b). Give two physical reasons why the mammography screen-film has a higher geometric resolution.
You are travelling on a two-lane highway 30 m behind a slow truck. You and the truck are initially moving at 20 m/s/ you reach a passing zone and at t=0 start to pass the truck with constant acceleration. What is your speed when you complete your pas..
What are the strength and direction of an electric field that will balance the weight of a 1.2 g plastic sphere that has been charged to -2.9 nC
A 3.0 uF capacitor is put across a 12 V battery. What is the initial current through the resistor when the switch is closed
A rectangle with a length L, and width L/2 has a surface charge density of 3.1mC/m^2. Determine the integral that would give you the electric field at a height h above the middle of the long edge.
In this simulation you can choose between seven possible circuits by clicking on one of the small circuit diagrams shown at the upper right. What is the maximum possible total current that can be obtained in this simulation
A bicycle wheel (with very light spokes) of mass M and radius R is mounted on a light axel through its center. Write a statement of conservation of energy for this system
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