December 2020

A baseball fan sitting in the “cheap seats” is 150 m from home plate (Figure 6.53). How much time elapses between the instant the fan sees a batter hit the ball and the moment the fan hears the sound? for the function f(x)=x2-2x-8, find the two points x when f(x) = 7 the answer should […]

An electric hoist is used to lift a piece of equipment y = 1.7 feet. (see figure). The diameter of the drum on the hoist is x = 8 inches. Find the number of degrees through which the drum must rotate. (Round to the nearest integer.) Briefly describe the main points on what is known about the biology of

In a Joule’s Law experiment, the mechanical equivalent of heat is determined by using calorimetry methods to determine the amount of heat generated by an electric current passing through a resistor. What are the major sources of error? How could they be compensated for or eliminated? 

PS Assignment 1: Instagram PostOutline and RubricASSIGNMENT OBJECTIVE:For your first Photoshop assignment, you will be creating an Instagram post usingeverything we have learned including:• Elements of Design • Principles of Design• Design Tension • Colour Theory• Typography • Brush Tool• Eraser Tool • Shape Tool• Move Tool • Adjustment Layers• Gradient • Type/Text Tool (Horizontal/Vertical•

Antarctica has an area of 5,500,000 square miles. It is covered with ice, giving the continent an average elevation of 7500 feet. Without the ice, it is estimated the continent would have an average elevation of 1500 ft. The average density of the ice is 0.917 g/mL. How many tonnes of ice cover Antarctica? 1

ASSIGNMENT OBJECTIVE:For your second Photoshop assignment, you will be creating a promotional postcard usingPhotoshop tools and techniques we have learned so far including:• Elements of Design • Principles of Design• Design Tension • Colour Theory• Typography • Brush Tool• Eraser Tool • Shape Tool• Move Tool • Adjustments Layers• Gradient Tool • Type/Text Tool• Transform

For many purposes we can treat butane C4H10 as an ideal gas at temperatures above its boiling point of −1.°C. Suppose the pressure on a 830.mL sample of butane gas at 43.0°C is tripled. Is it possible to change the temperature of the butane at the same time such that the volume of the gas

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Draw the Lewis structure for BF−4. An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than cm3, then the sphere will sink in liquid mercury (density = 13.6

a. Plot a scatter plot and comment on a possible relationship between travel time and miles travelled.b. State the least squares regression model equation.c. Comment on model reliability (r).d. Is the independent variable significant, (F or t test)?