Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. The blue car accelerates uniformly at a rate of 3.6 m/s² for 4.4 seconds. It then continues at a constant speed for 8.1 seconds, before applying the brakes such that the car

A pen contains a spring with a spring constant of 208 N/m. When the tip of the pen is in its retracted position, the spring is compressed 5.60 mm from its unstrained length. In order to push the tip out and lock it into its writing position, the spring must be compressed an additional 6.90 mm. How much work is done by the spring force to ready the pen for writing? Be sure to include the proper algebraic sign with your answer.

Given the class below, which answer choice would be an implementation of the default constructor (without an initialization list)?

class MyInteger {
    private:
       int num;
    public:
       MyInteger();
       MyInteger(int newint);
       void setInt(int newint);
       int getInt();
       int operator[](int index);
};

MyInteger::MyInteger(int newNum) { num = newNum; }

MyInteger::MyInteger() { num = 0; }

MyInteger::MyInteger(int newNum = 0) { num = newNum; }

MyInteger::MyInteger(int newNum) : num{0} {;}

MyInteger::MyInteger(int newNum = 0) : num{0} {;}

MyInteger::MyInteger() : num{0} {;}

MyInteger::MyInteger(newNum) { num = newNum; }

Prepare a flowchart for the separation of Pb2+, Zn2+, Ba2+, Mn2+, and Al3+
.

Let x and y denote the amount of goods X and Y. Find the demand functions of X (do not need to find that of Y) when your preferences are represented by the utility function U = x + xy + y. Is X normal good? Can you confirm law of demand for X? What is the relationship of X with Y? Answer all of them by using the demand curve you derived.

Create a Factorial application that prompts the user for a number and then displays its factorial. The factorial of a number is the product of all the positive integers from 1 to the number. For example, 5! = 5*4*3*2*1. I also need an algorithm and pseudocode in java please

Menlo Company distrubutes a single product. The company's sales and expenses for last month follow: Sales $316, 000, per unit $20 Variable expenses 221,200 and 14 per unit Contribution margin 94,800 $6 Fixed expenses 74,400 Net operating income 20,400 1.what is the monthly break even point in unit sales and in dollar sales?2.Without resorting to computations, what id the total contribution margin at the break ever point? 3) How many units have to be sold each month to attain a target profit of $ 39,600? 4.Verify your answer by preparing a contribution format income statement at the target sales level. 5) what is the company's CM ratio? If sales increase by 81,000 per month and there is no change in fixed expense. by how much would expect monthly net operating income to increase?

Starting from the expression for the total differential of enthalpy, H, express (δH/δP)_T in terms of C_p and the Joule-Thompson coefficient.

1. What is the weight of a 87.4 kg object? w=?

2.What was the average speed in km/h of a car that travels 798 km in 6.1h?

3. What net force is needed to give a 22 kg grocery cart an acceleration of 2.3 m/s² ?

4.Suppose a radio signal travels from Earth and through space at a speed of 3.0 × 10⁸ m/s. How far into space did the signal travel during the first 38.7 minutes?

5. How far away was a lightning strike if thunder is heard 5.23 seconds after seeing the flash? Assume that sound traveled at 350.0 m/s during the storm.

6.What is the acceleration of a car that moves from rest to 19.1 m/s in 10.0 s?

7. How long will be required for a car to go from a speed of 15.6 m/s to a speed of 26.7 m/s if the acceleration is 3.0 m/s²?

do you think free trade is really free? What are the likely costs of adopting a free trade regime? Do you think governments should play any role in reducing these costs? Why or Why not?

X is a continuous uniform (0,8) random variable. Define Y=X^2.

What is the mean square error of the estimate of μY based on 40 independent samples of X?

e_n = ?

A gas mixture with a total pressure of 755 mmHg contains each of the following gases at the indicated partial pressures: 126 mmHg CO2, 205 mmHg Ar, and 192 mmHg O2. The mixture also contains helium gas. What mass of helium gas is present in a 10.4-L sample of this mixture at 265 K ?.

Ref: Yang

Suppose a firm the following production function: f(x1,x2)=x_1^(1/2) x_2^(1/2)

This firm purchases inputs and sells output in competitive markets. The price of output is $10 per unit and the prices of the inputs x1 and x2 are $10 and $2 respectively. In the short run x2 is fixed and equal to 16. The marginal product for input 1 is: MP1=4/(x_1^(1/2) )

a) What is the profit maximizing level of input 1 for this firm to hire?
b) What is the profit maximizing level of output and the associated level of profits?
c) Derive a function describing isoprofit lines for this firm. Calculate and describe the slope of an isoprofit line for this firm.
d) Suppose the price of input 1 increases to $20. Use your isoprofit function to find the optimal amount of input 1 for this firm to hire.

A box with mass m is dragged across a level floor having a coefficient of kinetic friction ?k by a rope that is pulled upward at an angle ? above the horizontal with a force of magnitude F.

Part A

In terms of m, ?k, ?, and g, obtain an expression for the magnitude of force required to move the box with constant speed.

Part B

Knowing that you are studying physics, a CPR instructor asks you how much force it would take to slide a 90-kg patient across a floor at constant speed by pulling on him at an angle of 25? above the horizontal. By dragging some weights wrapped in an old pair of pants down the hall with a spring balance, you find that ?k=0.35. Use the result of part A to answer the instructor's question.