Physics 4 Review Guide

Denote by the average heights for males and females, respectively. Here are the two hypotheses:

We are trying to find the weight of 5 hay bales. The bales were weighed in pairs. The pairs for the bales are bales 1 and 2, 1 and 3, 1 and 4, 1 and 5, 2 and 3, 2 and 4, and 2 and 5 and so on. The weights are 80, 82, 83, 84, 85, 86, 87, 88, 90, and 91 measured in kilograms. What are the individual weights of the bales? Is the answer I found the only possible sets of weights? Explain how you know.

Paired comparisons may be from one individual – before and after samples - or from different individuals who have been matched for some characteristic, e.g. sex, age, height etc. In this question, we are looking at “healthcare workers”. The needle-stick observations of healthcare workers share a link that makes them similar to one another and allows the researcher to “compare” needle-stick injuries in various settings, e.g. “all healthcare facilities” including in community and tertiary-care hospitals.

Chapter 31 32. The red scare of 1919–1920 was provoked by a. the wartime migration of rural blacks to northern cities. b. the strict enforcement of prohibition laws. c. evolutionary science’s challenge to the biblical story of the Creation. d. the public’s association of labor violence with its fear of revolution.

In this case, the F is a dihybrid with AB on one chromosome and ab on the other

4. Connect the Newton Scale to the cart and then drag the cart up the ramp, across the 30cm difference at a steady rate.

First, we will set up the force table. The table comes in three separate pieces the base, stand and table once we connect and fasten all three parts we must use a circular level to make sure the table is balanced. If the force table isn’t balanced then we must adjust the base’s feet to the appropriate levels on each leg till the bubble on the level is centered. We must then assign where the positive & negative x, y axis are on the force table as a point of reference and label them with tape .Then for part I we must apply 1.96 N in the positive x – direction, and 2.94 N in the positive y-direction then we must balance the two with a third force and record the magnitude and direction of it and a draw a diagram showing all three forces. Part II

Load acts over outer circumference of on end of the cylinder, while the other end remains against a

13) Suppose that the production manager has an additional 100 pounds of material 1. What impact will this have on the

The magnitude of the forces exerted in the horizontal and vertical directions can be calculated using trigonometry. The total magnitude of the force multiplied by the cosine of its angle with the horizon will calculate the horizontal force. Conversely, the total magnitude of the force multiplied by the sine of its angle with the horizon will calculate the vertical force.

Step 9: Because we measured the lengths in centimeters rather than meters, we need to calculate are ‘g’ value into m/s2 so we can compare it to the SI unit for acceleration due to gravity. (Eg. 981.4/100 = 9.81 m/s2)

As a result of trail and error method we find the angle for the third pulley and the mass that should had be suspended from it. This will balance the forces deployed on the strings due to the other two masses. While the third force is defined as the equilibrant (������⃗������) Since it is the force that establishes the equilibrium. It is also the negative of the resultant -������⃗������ = ������⃗������ = ������⃗ ������ + ������⃗������. We gathered and recorded the mass and the angle required for the third pulley to enable to put the system into the equilibrium in table 1.

Purpose: The purpose of this Physics Lab is to investigate what factors determine the amount of flexion of the cantilever. Hence, the objective is to establish a relationship between the length of a cantilever, which may give some insight into the physics of cantilevers.

If the load is applied at the mid- length a=b=L/2 then mid span deflection is:

Table 1 & 2: First, find the mass of the wooden block and record the data. Then place the wooden block on the inclined plane (at 0o) with the wide side down. The height of the pulley should be the same height as the screw location on the wooden block. Then hang a weight on the opposite side of the hanger and add weights until block starts to move with a constant velocity (push block to overcome fs¬). Then record the resulted weight of the hanger in Table 1 (as F). Add 500 g to the wooden block and repeat the process. Replace 500 g with 1 kg on the wooden block. Repeat the process described above.