Personalized Courses
Study Materials
and Homework Help

A mixture of at 1000 K contains the gases at the following concentrations: , , and . Is the reaction at equilibrium? If not which way will the reaction proceed to reach equilibrium?

What are the equations of the lines simultaneously tangent to both curves and ?

Assume if the shear stress in steel exceeds about 4.00 x 10⁸ N/m², the steel ruptures. Determine the shearing force necessary to (a) shear a steel bolt 1.00 cm in diameter and (b) punch a 1.00-cm-diameter hole in a steel plate 0.500 cm thick. 

A bicyclist notes that the pedal sprocket has a radius of while the wheel sprocket has a radius of . The two sprockets are connected by a chain which rotates without slipping. The bicycle wheel has a radius . When pedaling, the cyclist notes that the pedal rotates at one revolution every . When pedaling, the wheel sprocket and the wheel move at the same angular speed.

a)The pedal sprocket and the wheel sprocket have the same______.

1) Angular and tangential speed

2) Tangential speed at their outer edges

3) Centripetal acceleration

4) Radius

 

(b)Calculate the angular speed of the pedal sprocket , in radians per second.

 

(c)Calculate the linear speed of the outer edge of the pedal sprocket , in centimeters per second.

 

(d)Calculate the angular speed of the wheel sprocket , in radians per second.

 

(f)If the cyclist wanted to travel at a speed of , how much time, in seconds, should elapse as the pedal makes one complete

  

Choose the correct answer for the below:

Compared to coffee, we would expect the cross elasticity of demand for:

a. tea to be negative, but positive for cream.
b. tea to be positive, but negative for cream.
c. both tea and cream to be negative.
d. both tea and cream to be positive.

If you were to design an electric heater using Nichrome wire as the heating element, what parameters of the wire could you vary to meet a specific power output, such as 1 000 W?

Find the indefinite integral.

Which of the following aqueous solutions contains the greatest number of ions?

a) 400.0 mL of 0.10 M NaCl

b) 300.0 mL of 0.10 M CaCl₂

c) 200.0 mL of 0.10 M FeCl₃

d) 200.0 mL of 0.10 M KBr

e) 800.0 mL of 0.10 M sucrose

What is the key factor that determines the elasticity or inelasticity of a supply of goods?

Which of the following is the correct IUPAC name for the compound given below?

a. 2-methyl-4-pentyne

b. 4-methyl-2-pentyne

c. 2,4-methylpentyne

d. no correct response

(a) Estimate the value of the limit  to five decimal places. Does this number look familiar?

(b) Illustrate part (a) by graphing the function .