Numerade

Questions asked

ANSWERED

Umar Sohail Qureshi

Numerade educator

What effect will each of the following have on the supply of auto tires? a. A technological advance in the methods of producing tires. b. A decline in the number of firms in the tire industry. c. An increase in the prices of rubber used in the production of tires. d. The expectation that the equilibrium price of auto tires will be lower in the future than currently. e. A decline in the price of the large tires used for semi trucks and earth-hauling rigs (with no change in the price of auto tires). f. The levying of a per-unit tax on each auto tire sold. g. The granting of a 50 -cent-per-unit subsidy for each auto tire produced.

View Answer

INSTANT ANSWER

(a) Consider a carbon atom in its ground state. Would such an atom offer a satisfactory model for the carbon of methane? If not, why not? (Hint: Consider whether a ground state carbon atom could be tetravalent, and consider the bond angles that would result if it were to combine with hydrogen atoms.) (b) Consider a carbon atom in the excited state: $$ C \frac{11}{1 s} \frac{1}{2 s} \frac{1}{2 p_{x}} \frac{1}{2 p_{y}} \frac{1}{2 p_{z}} $$ Excited state of a carbon atom Would such an atom offer a satisfactory model for the carbon of methane? If not, why not?

View Answer

ANSWERED

Umar Sohail Qureshi

Numerade educator

A $110-N$ force acting in a vertical plane parallel to the $y z$ plane is applied to the $220-$ mm-long horizontal handle $A B$ of a socket wrench. Replace the force with an equivalent force-couple system at the origin $O$ of the coordinate system. (Figure cant copy)

View Answer

ANSWERED

Oswaldo Jiménez

Numerade educator

Supply and Demand Suppose that the demand and price for a certain model of a youth wristwatch are related by $$p=D(q)=16-1.25 q$$ where $p$ is the price (in dollars) and $q$ is the quantity demanded (in hundreds). Find the price at each level of demand. a. 0 watches b. 400 watches c. 800 watches Find the quantity demanded for the watch at each price. d. $\$ 8 \quad$ e. $\$ 10 \quad$ f. $\$ 12$ g. Graph $p=16-1.25 q$ Suppose the price and supply of the watch are related by $$p=S(q)=0.75 q$$ where $p$ is the price (in dollars) and $q$ is the quantity supplied (in hundreds) of watches. Find the quantity supplied at each price. h. $\$ 0 \quad$ i. $\$ 10 \quad$ j. $\$ 20$ k. Graph $p=0.75 q$ on the same axis used for part g. I. Find the equilibrium quantity and the equilibrium price.

View Answer

INSTANT ANSWER

The charges and coordinates of two charged particles held fixed in an $x y$ plane are $q_{1}=+3.0 \mu \mathrm{C}, x_{1}=3.5 \mathrm{cm}, y_{1}=0.50 \mathrm{cm}$ and $q_{2}=-4.0 \mu \mathrm{C}, x_{2}=-2.0 \mathrm{cm}, y_{2}=1.5 \mathrm{cm} .$ Find the (a) magnitude and (b) direction of the electrostatic force on particle 2 due to particle $1 .$ At what $(\mathrm{c}) x$ and (d) $y$ coordinates should a third particle of charge $q_{3}=+4.0 \mu \mathrm{C}$ be placed such the net electrostatic force on particle 2 due to particles 1 and 3 is zero?

View Answer

ANSWERED

Chandan Gupta

Numerade educator

How would the following changes in price affect total revenue? That is, would total revenue increase, decrease, or remain unchanged? a. Price falls and demand is inelastic. b. Price rises and demand is elastic. c. Price rises and supply is elastic. d. Price rises and supply is inelastic. e. Price rises and demand is inelastic. f. Price falls and demand is elastic. g. Price falls and demand is of unit elasticity.

View Answer

ANSWERED

Stephen Ho

Numerade educator

Describe a method that could be used to separate each mixture. \begin{equation} \begin{array}{ll}{\text { a. iron filings and sand }} & {\text { c. the components of ink }} \\ {\text { b. sand and salt }} & {\text { d. helium and oxygen gases }}\end{array} \end{equation}

View Answer

ANSWERED

Spencer Bahr

Numerade educator

Refer to Table 1.6 . a. What is the average miles per gallon for city driving? b. On average, how much higher is the miles per gallon for highway driving as compared to city driving? c. What percentage of the cars have four-cylinder engines? d. What percentage of the cars use regular fuel?

View Answer

ANSWERED

Babita Kumari

Numerade educator

Finding a Limit In Exercises $47-62,$ find the limit. $$\lim _{x \rightarrow 0} \frac{[1 /(x+4)]-(1 / 4)}{x}$$

View Answer

ANSWERED

Darshan Maheshwari

Numerade educator

In Exercises $47-54$ , state whether the function is odd, even, or neither. Support graphically and confirm algebraically. $$f(x)=-x^{2}+0.03 x+5$$

View Answer

Teresa R.