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Problem:
Wine, beer, or spirits? Women as a group develop heart disease much later than men. We can improve the completely randomized design of Exercise 9.45 by using women and men as blocks. Your 300 subjects include 120 women and 180 men.
Required:
1. Outline a block design for comparing wine, beer, and spirits. Be sure to say how many subjects you will put in each group in your design.
A 5.20 g pop up toy is compressed 1.50 cm and pops up to the height of 50 cm the spring constant is 270 Nm. What is the loss of energy.
Use the ideal gas as a model to estimate the rms speed of a free electron in a metal at the 273 K temperatures
The engine of a model rocket accelerates the rocket vertically upward for 2.0 s as follows: At t = 0, the rocket's speed is zero; at t = 1.0 s, determine the instantaneous acceleration of the rocket at t = 1.5 s
A 0.50 kg ball that is tied to the end of a1.4 m light cord is revolved in a horizontal plane by the cord making a 30° angle, with the vertical. Decide the ball's speed.
a solid nonconducting sphere has a radius of 50.0 cm. it has a uniform charge density of 3.00times10-3 cm3. what is the
A monkey is swinging on a vine. The monkey's mass is 74kg and the tension in the vine when it is vertical is 800 N when the monkey is moving at 2.0 m/s. What is the length of the vine
The sun appears to move across the sky, because the earth spins on its axis. To a person standing on the earth, the sun subtends an angle of sun = 9.30 x 10-3 rad (see Conceptual Example 2). How much time (in seconds) does it take for the sun to move..
A muon is created by a cosmic ray high in Earth's atmosphere. It travels towards Earth at a speed v = 0.93c for a distance of 4.7km as gauged by an observer at rest with respect to Earth. The muon is unstable, and decays (self-destructs) into 3 other..
A diverging lens has a focal distance of -30.0 cm. If the lens projects a virtual image at a distance that is 1/2 of the object distance, a) what is the object distance and b) what is the magnification?
A man is pushing a heavy box across the floor. The box weighs 95 lbs. The man is pushing forward on it with a force of 56 lbs. What is the resultant horizontal force on the box
An X-ray beam of wavelength 0.01nm strikes a target containing free electrons. determine The change in wavelength of the scattered x-ray
when a charged particle moves at an angle of 13deg with respect to a magnetic field it experiences a magnetic force of
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