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Stephanie suspects that her employees are stealing paperclips a few at a time from the storage room. Stephanie asks scott to count the paperclips in the storage room in each of the 70 boxes at hand. each box is supposed to contain a mean of 250 with some variability, and a SD of 5 paperclips. Scott reports that he counted a mean number of 232 from the 70 boxes. Are employees stealing paperclips? And how do we know?
Lead has a greater density than iron, and both are denser than water. Is the buoyant force on each one the same? Explain
Visible light passes through a diffraction grating that has 900 slits per centimeter, and the interference pattern is observed on a screen that is 2.40 m from the grating, What is the difference between these wavelengths
The thickness of the bubble is 115nm and the bubble is illuminated by white light at normal incidencewhat colors(wavelengths) are transmitted throug the bubble
Under certain conditions, the human body can withstand an acceleration of 10 g's. What is the net force (in Newtons) acting on a person
A barber's chair with a person in it weighs 2100N. The output plunger of a hydraulic system begins to lift the chair when the barber's foot applies a force of 55N to the input piston. Neglect any height difference between the plunger and the piston. ..
A number of people are riding in a hot-air balloon. The combined mass of the people and balloon is 281 kg. The balloon is motionless in the air, since the downward-acting weight of the people and balloon is balanced by an upward-acting 'buoyant' f..
two parallel infinite sheets carry positive unifrom surface charge densities sigma and 3 sigma. what is the magnetude of electrci field between the sheets
A block of mass 20m can move without friction on a horizontal table. find the magnitude of the acceleration of the descending block
What is the speed of the large cart after the impact.
You drop a stone into a deep well and hear it hit the bottom 1.80 s later. This is the time it takes for the stone to fall to the bottom of the well, plus the time it takes for the sound of the stone hitting the bottom to reach you. Sound travels ..
Two police cars have identical sirens that produce a frequency of 560 Hz. Find the speed of the approaching police car
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. How long was the ball in flight
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