8. What is the density of an object with a mass of 290.5 g and volume of 83 cm 3?

A westbound section of freeway currently has three 12-ft wide lanes, a 6-ft right shoulder, and no ramps within 3 miles upstream

Tresset [83]

Answer:

•Estimated density = 39.685Pc/mi/en

•Level of service, LOS frequency = LOSC

Explanation:

We are given:

•Freeway current lane width,B = 12ft

• freeway current shoulder width,b = 6ft

• percentage of heavy vehicle, Ptb = 10℅

• peak hour factor, PHF = 0.9

Let's consider,

•Number of lanes N = 4

• flow of traffic V = 7500vph

• percentage of Rv = 0, therefore the freeflow speed in freeway FFS = 70mph

• cars equivalent for recreational purpose Er= 2

•cars to be used for trucks and busses Etb= 2.5

Let's first calculate for the heavy adjustment factor.

We have:

$F_H_v = \frac{1}{1+P_t_b(E_t_b-1)+Pr(Er-1)}$

Substituting figures in the equation we have:

$= \frac{1}{1+0.1(2.5-1)+0(2-1)}$

= 0.75

Let's now calculate equivalent flow rate of the car using:

$Vp = \frac{V}{(P_H_F)*N)*(F_H_v)*(F_p)}$

$= \frac{7500}{0.9*4*0.75*1}$

= 2777.7 pc/h/en

Calculating for traffic density, we have:

$D = \frac{Vp}{FFS}$

$D = \frac{2777.7}{70}$

D = 39.685 Pc/mi/en

Using the table for LOS criteria of basic frequency segment, the level of service LOS of frequency is LOSC

4 0

3 years ago

An artist is creating a gigantic mobile using old cars. On one end of the mobile, a 2100 lb Plymoth is suspended 30 feet from th

ozzi

Answer:

c 45 feet from the fulcrum

Explanation:

The moment at the fulcrum must be the same for each car. If the distance is d, then the artist must have ...

(2100 lb)(30 ft) = (1400 lb)(d)

2100·30/1400 ft = d = 45 ft

The Volkswagen should be 45 ft from the fulcrum.

7 0

3 years ago

Read 2 more answers

What purpose does the case of a rifle or handgun cartridge serve? A, To hold all of its components together To hold all of its c

Ivenika [448]

Answer:

D. To control the spread of the shot

7 0

2 years ago

Read 2 more answers

A microscope illuminator uses a transformer to step down the 120 V AC of the wall outlet to power a 12.0 V,50 W microscope bulb.

Anna35 [415]

Answer:2.88 ohms

Explanation:

R= V^2 / P

12^2/50

144/50

2.88 ohms

5 0

1 year ago

CPS 2231: Computer Organization and Programming Programming assignment #1 Concepts: Scanner, loops, input validation, array, met

agasfer [191]

Answer:

import java.util.*;

public class BarChart

{

public static void main(String args[])

{

int arr[]=new int[5];

Scanner sc=new Scanner(System.in);

for(int i=0;i<5;i++)

{

while(true){

System.out.println("Enter today's sale for store "+(i+1)+" (negative value not allowed)");

arr[i]=sc.nextInt();

if(arr[i]>0)

break;

}

System.out.println("SALES BAR CHART");

for(int i=0;i<5;i++)

{

System.out.println("Store "+(i+1)+": ");

for(int j=0;j<arr[i];j=j+100)

{

System.out.print("*");

}

System.out.println("");

}

3 0

2 years ago

8. What is the density of an object with a mass of 290.5 g and volume of 83 cm 3?​

8. What is the density of an object with a mass of 290.5 g and volume of 83 cm 3?