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1 year ago

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Two balls are at the same height and released at the same time. One ball is dropped and hits the ground 5s later. The 2nd ball i

s pushed out so it moves horizontally. When does the second ball hit the ground? How far does the 2nd ball travel horizontally?

1 answer:

ASHA 777 [7]1 year ago

5 0

Answer:

The second ball hits at the same time.

Distance travelled is 65 meters

Explanation:

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A polycondensation reaction takes place between 1.2 moles of a dicarboxylic acid, 0.4 moles of glycerol (a triol) and 0.6 moles

katrin2010 [14]

Answer:

A) i) using statistical theory of floxy

(Pa)c = 0.816

(Pb)c = 0.816

ii) using Carothers theory

( Pc ) = 0.917

B) To Obtain the measured value of critical extent of reaction ( 0.866) 1 mol of Glycerol will react with 1 mol of dicarboxylic acid, but the same can not be applied to our obtained value because our stoichiometry is different

Explanation:

Given data :

Polycondensation reaction takes place between : 1.2 moles of dicarboxylic acid , 0.4 moles of glycerol and 0.6 moles of ethylene glycol

A) Calculate the critical extents of reaction for gelation

i) using statistical theory of floxy

(Pa)c = 0.816

(Pb)c = 0.816

ii) using Carothers theory

( Pc ) = 0.917

attached below is the detailed solution

B) To Obtain the measured value of critical extent of reaction ( 0.866) 1 mol of Glycerol will react with 1 mol of dicarboxylic acid, but the same can not be applied to our obtained value because our stoichiometry is different

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3 years ago

Which pair of scientists should Elizabeth write instead of X

ASHA 777 [7]

Answer:

O Hooke and Leeuwenhoek

Explanation:

O Hooke and Leeuwenhoek discovered the existence of micro organisms between 1665 and 1683

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3 years ago

Read 2 more answers

You are sitting in your car at rest at a traffic light with a bicyclist at rest next to you in the adjoining bicycle lane. As so

Alexxandr [17]

Answer:

A. 2.63 s B. 12.38 m

Explanation:

A. For what time interval (in s) after the light turned green is the bicycle ahead of your car?

The time interval at which the bicycle is ahead of the car is the time it takes for the car to reach the bicycle's speed of 21.0 mi/h.

So, using v = u + at where u = initial speed of car = 0 mi/h, v = final speed of car = 21.0 mi/h, a = acceleration of car = 8.00 mi/h/s and t = time taken for acceleration.

So, v = u + at

t = (v - u)/a

substituting the values of the variables into the equation, we have

t = (21.0 mi/h - 0 mi/h)/8.00 mi/h/s

= 21.0 mi/h ÷ 8.00 mi/h/s

= 2.63 s

B. By what maximum distance does the bicycle lead the car?

To find this distance, we find the distance moved by both the car in this time of t = 2.63 s

So, using s = ut + 1/2at² where u = initial speed of car = 0 mi/h = 0 m/s, t = time = 2.63 s, a = acceleration of car = 8.00 mi/h/s = 8.00 × 1609 m/3600 s = 3.58 m/s/s = 3.58 m/s² and s = distance moved by car.

So, substituting the values of the variables into the equation, we have

s = ut + 1/2at²

s = 0 m/s × 2.63 s + 1/2 × 3.58 m/s² × (2.63 s)²

s = 0 m + 1/2 × 3.58 m/s² × (2.63 s)²

s = 1.79 m/s² × 6.9169 s²

s = 12.38 m

which is also the maximum distance with which the bicycle leads the car.

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2 years ago

Which describes the motion of the box based on the resulting free-body diagram?

Anuta_ua [19.1K]

Answer:

D. (static equilibrium)

Explanation:

I just took the test and made a 100 with that answer.

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2 years ago

You are on the CHS football team. You want to know if drinking water or drinking Gatorade during a game is more hydrating. The t

shutvik [7]

Answer:

Independent variables ; Water and Gatorade

Dependent variable ; You ( sport person )

Explanation:

The independent variables are ; Water and Gatorade

This is because these are the variables the team will always alternate in other to determine which has more hydrating effect on the user in the long run

while

The dependent variable here is You

This is because your level of hydration depends on the Drinking water or Gatorade been fed to you in the next 6 games.

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2 years ago