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iris [78.8K]
3 years ago
13

What are the three uses of a screw?​

Computers and Technology
2 answers:
inysia [295]3 years ago
7 0

Answer:

fasten things, hold/pull things, amplify force

Explanation:

A screw is a type of simple machine.

It can be used to fasten 2 or more things together (ex planks of wood). It can also be used to pull something by screwing into the material and staying there (ex corkscrew for opening wine bottles). It can also be used to magnify force. You can tighten a wingnut by hand and get a significant amount of vertical holding power.

elena-s [515]3 years ago
5 0
- they are used to fasten two pieces of wood or metal.
- screw jack is used for lifting one side of a car or a truck, in order to change the punctured wheel.
- a cork screw is used for pulling out cork from the bottles of wine or ketchup.
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What is contrast (in Photography)?
kozerog [31]

Answer:

Contrast is a tool that photographers use to direct viewers' attention to their subject. There are two types: Tonal Contrast and Color Contrast. TC refers to the difference in tones from the lightest tone to the darkest tone, in other words, the difference in tones from white to gray to black.

Explanation:

heheh there you go

3 0
3 years ago
Write the class RoadSegmet. The class inherits from Transportation Class. The Class have a vector hourlySpeeds data field which
OLEGan [10]

Answer:

The length of time on the road segment is calculated by taking it's distance and dividing by the speed at the time of departure. This length of time is then added to the departureTime parameter to get the arrivalTime.

Define a RiverSegment class that inherits from the base TransportationClass from above. This class will have a vector<double> scheduledDepartureTimes data field that will keep track of the departure time (e.g. 10.5 represents the time 10:30) of all ferries on the river. You can assume these are sorted. Additionally, there is a _speed value that is the speed of the ferry at all times (ferries tend to be consistently slow). There is a setSpeed function to change the _speed value. Additionally, there is an addDepartureTime(double hour) function to add a departure time to the vector. Make sure the time are sorted

Computing the arrival time for the RiverSegment is a little more complicated since you need to wait for the next available departure time. Once you find the next available departure time (after the departure time passed in), you need to add the length of time on the river segment. This is done by dividing the _distance by the _speed. Add the time on the river to the departure time (from the vector of departure times) and this will give you the arrive time.

note: If there is no departure time scheduled for after your planned departure, you need to take the first available departure the following day. Our solution assumes the departure times are the same every day.

TransportationLink.h

#include <string>

using namespace std;

#ifndef __TRANSPORTATIONLINK_H__

#define __TRANSPORTATIONLINK_H__

const int HOURS_PER_DAY = 24;

const int MINS_PER_HOUR = 60;

const int MINS_PER_DAY = MINS_PER_HOUR * HOURS_PER_DAY; //24 * 60

class TransportationLink {

protected:

string _name;

double _distance;

public:

TransportationLink(const string &, double);

const string & getName() const;

double getDistance() const;

void setDistance(double);

// Passes in the departure time (as minute) and returns arrival time (as minute)

// For example:

// 8 am will be passed in as 480 (8 * 60)

// 2:30 pm will be passed in as 870 (14.5 * 60)

virtual unsigned computeArrivalTime(unsigned minute) const = 0;

};

5 0
3 years ago
Tamara is writing a program to organize students in a class and needs to use operators to organize student grades, then compare
VMariaS [17]

Answer:   you said "Tamara needs to use

operators to organize the students' grades, then

operators to compare the results."

i think your right

Explanation:

sounds right.

3 0
3 years ago
How to study program ?
CaHeK987 [17]
I don’t understand how this question can u explains more or be a little more specific please.
6 0
3 years ago
(Financial application: compound value) Suppose you save $100 each month into savings account with an annual interest rate of 5%
Nostrana [21]

Solution:

initial = float(eval(input('Enter the monthly saving amount: ')))

x = (1 + 0.00417)

month_one = initial * x

month_two = (initial + month_one) * x  

month_three = (initial + month_two) * x  

month_four = (initial + month_three) * x

month_five = (initial + month_four) * x  

month_six = (initial + month_five) * x  

print('The sixth month value is: '+str(month_six))  

Don't forget the saving amount, and initialize the balance with that amount. Inside the loop, work out and add the interest and then add the saving amount for the next month.

balance = 801

for month in range(6):

  balance = balance * (1.00417)

print(balance)

7 0
3 years ago
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