22.06.2020

What was the average speed of car D?

0.3 ft/s
2 ft/s
3 ft/s
12 ft/s

. 1

Step-by-step answer

09.07.2023, solved by verified expert
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Explanation:

1. this is not a social studies question

2. we are given no x or y value to figure it out

however this could be looked at as finding the slope. the formula to find the slope is What was the average speed of car D? 0.3 ft/s, №18010137, 22.06.2020 08:24 plug in the values and you will have your answer

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Social Studies
Step-by-step answer
P Answered by Master

Explanation:

1. this is not a social studies question

2. we are given no x or y value to figure it out

however this could be looked at as finding the slope. the formula to find the slope is \frac{Y2-Y1}{X2-X1} plug in the values and you will have your answer

Mathematics
Step-by-step answer
P Answered by Specialist

(a) 142 km trip requires 15.16 Liters of Gasoline

(b) The money spent is 69.34 euros or $87.37.

(c) The average speed of sprinter is 34.45 km/h.

(d) 4 lb of candy contains 0.559 kg of dietary fat.

Step-by-step explanation:

(a)

Given that;

Mileage = 22 mi/gal

Converting it to km/L

Mileage = (22 mi/gal)(1 gal/3.78 L)(1 km/0.6214 mi)

Mileage = 9.36 km/L

Now, the gasoline required for 142 km trip:

Gasoline Required = (Length of trip)/(Mileage)

Gasoline Required = (142 km)/(9.36 km/L)

Gasoline Required = 15.16 L

(b)

Given that;

Mileage = 30 mi/gal

Converting it to km/L

Mileage = (30 mi/gal)(1 gal/3.78 L)(1 km/0.6214 mi)

Mileage = 12.77 km/L

Now, the gasoline required for 142 km trip:

Gasoline Required = (Length of trip)/(Mileage)

Gasoline Required = (115 km/day)(7 days/week)/(12.77 km/L)

Gasoline Required = 63 L/week

Now, we find the cost:

Weekly Cost = (Gasoline Required)(Unit Cost)

Weekly Cost = (63 L/week)(1.1 euros/L)

Weekly Cost = 69.34 euros/week = $87.37

since, 1 euro = $1.26

(c)

Average Speed = (Distance Travelled)/(Time Taken)

Average Speed = 200 m/20.9 s

Average Speed = (9.57 m/s)(3600 s/1 h)(1  km/ 1000 m)

Average Speed = 34.45 km/h

(d)

22.7 g piece contains = 7 g dietary fat

(22.7 g)(1 lb/453.592 g) piece contains = (7 g)(1 kg/1000 g) dietary fat

0.05 lb piece contains = 0.007 kg dietary fat

1 lb piece contains = (0.007/0.05) kg dietary fat

4 lb piece contains = 4(0.007/0.05) kg dietary fat

4 lb piece contains = 0.559 kg dietary fat

Mathematics
Step-by-step answer
P Answered by Master

(a) 142 km trip requires 15.16 Liters of Gasoline

(b) The money spent is 69.34 euros or $87.37.

(c) The average speed of sprinter is 34.45 km/h.

(d) 4 lb of candy contains 0.559 kg of dietary fat.

Step-by-step explanation:

(a)

Given that;

Mileage = 22 mi/gal

Converting it to km/L

Mileage = (22 mi/gal)(1 gal/3.78 L)(1 km/0.6214 mi)

Mileage = 9.36 km/L

Now, the gasoline required for 142 km trip:

Gasoline Required = (Length of trip)/(Mileage)

Gasoline Required = (142 km)/(9.36 km/L)

Gasoline Required = 15.16 L

(b)

Given that;

Mileage = 30 mi/gal

Converting it to km/L

Mileage = (30 mi/gal)(1 gal/3.78 L)(1 km/0.6214 mi)

Mileage = 12.77 km/L

Now, the gasoline required for 142 km trip:

Gasoline Required = (Length of trip)/(Mileage)

Gasoline Required = (115 km/day)(7 days/week)/(12.77 km/L)

Gasoline Required = 63 L/week

Now, we find the cost:

Weekly Cost = (Gasoline Required)(Unit Cost)

Weekly Cost = (63 L/week)(1.1 euros/L)

Weekly Cost = 69.34 euros/week = $87.37

since, 1 euro = $1.26

(c)

Average Speed = (Distance Travelled)/(Time Taken)

Average Speed = 200 m/20.9 s

Average Speed = (9.57 m/s)(3600 s/1 h)(1  km/ 1000 m)

Average Speed = 34.45 km/h

(d)

22.7 g piece contains = 7 g dietary fat

(22.7 g)(1 lb/453.592 g) piece contains = (7 g)(1 kg/1000 g) dietary fat

0.05 lb piece contains = 0.007 kg dietary fat

1 lb piece contains = (0.007/0.05) kg dietary fat

4 lb piece contains = 4(0.007/0.05) kg dietary fat

4 lb piece contains = 0.559 kg dietary fat

Physics
Step-by-step answer
P Answered by PhD

a) The equation is (m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

b) Your velocity after collision is 2.64 m/s

c) The force you felt is 7392 N

d) you and your brother undergo an equal amount of acceleration

Explanation:

Your mass m_{y} = 60 kg

your brother's mass m_{b} = 30 kg

mass of the car m_{c} = 80 kg

your initial speed u_{y} = 0 m/s (since you've not started moving yet)

your brother's initial velocity u_{b} = 3 m/s

your final speed v_{y} after collision = ?

your brother's final speed v_{b} after collision = ?

a) equations you need to use to figure out how fast you and your brother are moving after the collision is

(m_{y}+m_{c} )u_{y} + (m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

but u_{y} = 0 m/s

the equation reduces to

(m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

b) if your little brother reverses with velocity of 0.36 m/s it means

v_{b} = -0.36 m/s (the reverse means it travels in the opposite direction)

then, imputing values into the equation, we'll have

(m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

(30 + 80)3 = (60 + 80)v_{y} + (30 + 80)(-0.36)

330 = 140v_{y} - 39.6

369.6 = 140v_{y}

v_{y} = 369.6/140 = 2.64 m/s

This means you will also reverse with a velocity of 2.64 m/s

c) your initial momentum = 0  since you started from rest

your final momentum = (total mass) x (final velocity)

==>  (60 + 80) x 2.64 = 369.6 kg-m/s

If the collision lasted for 0.05 s,

then force exerted on you = (change in momentum) ÷ (time collision lasted)

force on you = ( 369.6 - 0) ÷ 0.05 = 7392 N

d) you changed velocity from 0 m/s to 2.64 m/s in 0.05 s

your acceleration is (2.64 - 0)/0.05 = 52.8 m/s^2

your brother changed velocity from 3 m/s to 0.36 m/s in 0.05 s

his deceleration is (3 - 0.36)/0.05 = 52.8 m/s

you and your brother undergo an equal amount of acceleration. This is because you gained the momentum your brother lost

Physics
Step-by-step answer
P Answered by PhD

a) The equation is (m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

b) Your velocity after collision is 2.64 m/s

c) The force you felt is 7392 N

d) you and your brother undergo an equal amount of acceleration

Explanation:

Your mass m_{y} = 60 kg

your brother's mass m_{b} = 30 kg

mass of the car m_{c} = 80 kg

your initial speed u_{y} = 0 m/s (since you've not started moving yet)

your brother's initial velocity u_{b} = 3 m/s

your final speed v_{y} after collision = ?

your brother's final speed v_{b} after collision = ?

a) equations you need to use to figure out how fast you and your brother are moving after the collision is

(m_{y}+m_{c} )u_{y} + (m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

but u_{y} = 0 m/s

the equation reduces to

(m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

b) if your little brother reverses with velocity of 0.36 m/s it means

v_{b} = -0.36 m/s (the reverse means it travels in the opposite direction)

then, imputing values into the equation, we'll have

(m_{b}+m_{c} )u_{b} = (m_{y}+m_{c} )v_{y} +  (m_{b}+m_{c} )v_{b}

(30 + 80)3 = (60 + 80)v_{y} + (30 + 80)(-0.36)

330 = 140v_{y} - 39.6

369.6 = 140v_{y}

v_{y} = 369.6/140 = 2.64 m/s

This means you will also reverse with a velocity of 2.64 m/s

c) your initial momentum = 0  since you started from rest

your final momentum = (total mass) x (final velocity)

==>  (60 + 80) x 2.64 = 369.6 kg-m/s

If the collision lasted for 0.05 s,

then force exerted on you = (change in momentum) ÷ (time collision lasted)

force on you = ( 369.6 - 0) ÷ 0.05 = 7392 N

d) you changed velocity from 0 m/s to 2.64 m/s in 0.05 s

your acceleration is (2.64 - 0)/0.05 = 52.8 m/s^2

your brother changed velocity from 3 m/s to 0.36 m/s in 0.05 s

his deceleration is (3 - 0.36)/0.05 = 52.8 m/s

you and your brother undergo an equal amount of acceleration. This is because you gained the momentum your brother lost

Social Studies
Step-by-step answer
P Answered by PhD
The climate of India is described as C. Seasonally rainy monsoonsReasoning: A monsoon is a seasonal change in the direction of the prevailing, or strongest, winds of a region. The summer monsoon and the winter monsoon determine the climate for most of India and Southeast Asia.
Also, India is home to an extraordinary variety of climatic regions, ranging from tropical in the south to temperate and alpine in the Himalayan north, where elevated regions receive sustained winter snowfall. The nation's climate is strongly influenced by the Himalayas and the Thar Desert.
Social Studies
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P Answered by Master

secret explanation

Explanation:

i think it will help you

Social Studies
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P Answered by Master
Being responsible is owning up the possible consequences of your decision whether these consequences are right or wrong. Communication is a two way process wherein there is a messenger (one who talks) and receiver (one who listens). One of the ways that a person could be responsible is by saying ‘I’ in all the things he would say, instead of ‘we’. Example, ‘We don’t like the way you act a while ago.’ Change it to ‘I don’t like the way you act awhile ago’. Here, you are establishing ownership on the things you want to say to the person.  
Social Studies
Step-by-step answer
P Answered by Master
Answer and Explanation:

Risky behavior defines that behavior which is riskier to the life of people

As if you want to choose a career in a Nurse or a Doctor you want to judge the risk.

As a doctor, if the doctor gives the high dosage to the patient to recover from illness but even less dosage also works still the doctor gives which affect the kidney, liver of the patient, etc

Well, it is a great career as a doctor you can help many poor people by giving them free medical treatment in return you get the blessings which surely worked.

But there are many hospitals who are taking extraordinary charges even they do transplants, surgeries where there is no need just to earn the money but this is not acceptable and in one day everyone knows about it what they are doing

Therefore do not play with the life of the people as it is precious for them.[youtube=5j29EeDG4iw]
Social Studies
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P Answered by PhD

Taken from the poem “Abuelito Who” by Sandra Cisneros, the author has used the figurative language of “coins” and “rain” in lines 1, 20, and 21 in order to describe her memories about her grandfather. Cisneros has used simile, which is a figure of speech, throughout the poem. The main function of simile is to make a comparison to show the similarities between two different things. Moreover, simile is usually accompanied by words such as “as” and “like”. In the text, there are two examples of this figure of speech: “Abuelito who throws coins like rain” (line 1)/ “is the rain on the room that falls like coins” (line 21). Simile has helped the author develop the meaning of the poem, that is, to narrate about particular memories she has of her grandfather or “abuelito”, an affectionate term for a grandfather in Spanish. For instance, Cisneros used figurative language and simile in line 1 to describe how her grandfather played with her making coins fall like raindrops from above.

[youtube=9WyzHdtN9bw]

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