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timama [110]
1 year ago
12

A standard drink is a unit of measurement. in the united states, a standard drink contains 0.6 fluid ounces of alcohol.which of

these drinks represents a standard drink?
Physics
1 answer:
lora16 [44]1 year ago
6 0

The example of an alcohol that represents standard drink is 1.5 oz liquor.

<h3>What is standard drink?</h3>

A standard drink is a measure of alcohol consumption representing a hypothetical beverage which contains a fixed amount of pure alcohol.

A standard drink is also a unit of measurement.

In the United States, a standard drink contains 0.6 fluid ounces of alcohol.

Thus, it is the amount of any beverage that contains about 14 grams/0.6 oz of pure alcohol.

Examples of standard drinks:

  • 12 oz beer/hard seltzer,
  • 5 oz wine,
  • 1.5 oz liquor (like vodka or rum)

Thus, the example of an alcohol that represents standard drink is 1.5 oz liquor.

Learn more about standard drinks here: brainly.com/question/17645986

#SPJ1

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The Total Mechanical Energy

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In complete sentences describe the energy flow between the Sun, the Earth, and space
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On the basis of the above explanation is:
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2 years ago
A loaded ore car has a mass of 950 kg. and rolls on rails ofnegligible friction. It starts from rest ans is pulled up a mineshaf
stiks02 [169]

(a) 10241 W

In this situation, the car is moving at constant speed: this means that its acceleration along the direction parallel to the slope is zero, and so the net force along this direction is also zero.

The equation of the forces along the parallel direction is:

F - mg sin \theta = 0

where

F is the force applied to pull the car

m = 950 kg is the mass of the car

g=9.8 m/s^2 is the acceleration of gravity

\theta=30.0^{\circ} is the angle of the incline

Solving for F,

F=mg sin \theta = (950)(9.8)(sin 30.0^{\circ})=4655 N

Now we know that the car is moving at constant velocity of

v = 2.20 m/s

So we can find the power done by the motor during the constant speed phase as

P=Fv = (4655)(2.20)=10241 W

(b) 10624 W

The maximum power is provided during the phase of acceleration, because during this phase the force applied is maximum. The acceleration of the car can be found with the equation

v=u+at

where

v = 2.20 m/s is the final velocity

a is the acceleration

u = 0 is the initial velocity

t = 12.0 s is the time

Solving for a,

a=\frac{v-u}{t}=\frac{2.20-0}{12.0}=0.183 m/s^2

So now the equation of the forces along the direction parallel to the incline is

F - mg sin \theta = ma

And solving for F, we find the maximum force applied by the motor:

F=ma+mgsin \theta =(950)(0.183)+(950)(9.8)(sin 30^{\circ})=4829 N

The maximum power will be applied when the velocity is maximum, v = 2.20 m/s, and so it is:

P=Fv=(4829)(2.20)=10624 W

(c) 5.82\cdot 10^6 J

Due to the law of conservation of energy, the total energy transferred out of the motor by work must be equal to the gravitational potential energy gained by the car.

The change in potential energy of the car is:

\Delta U = mg \Delta h

where

m = 950 kg is the mass

g=9.8 m/s^2 is the acceleration of gravity

\Delta h is the change in height, which is

\Delta h = L sin 30^{\circ}

where L = 1250 m is the total distance covered.

Substituting, we find the energy transferred:

\Delta U = mg L sin \theta = (950)(9.8)(1250)(sin 30^{\circ})=5.82\cdot 10^6 J

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