Answer: Choice A) 0.44 miles
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Work Shown:
1 hour = 60 minutes
1 minute = 60 seconds
1 hour = 60*60 = 3600 seconds
40 seconds = 40*(1/3600) = 40/3600 = 1/90 hours
The car travels 1/90 of an hour. Let t = 1/90.
The initial velocity is vi = 30 mph.
The final velocity is vf = 50 mph.
Apply one of the kinematics equations as given below.
x = distance traveled
x = 0.5*(vi+vf)*t
x = 0.5*(30+50)*(1/90)
x = 0.44444444444444 which is approximate
x = 0.44
The car traveled roughly 0.44 miles. This matches with choice A.
I'm assuming choice A is supposed to say 0.44 instead of 0.442; otherwise, I think your teacher made a typo by putting that 2 in there. Each of the other answer choices are accurate to 2 decimal places, so it would make sense that choice A is also accurate to 2 decimal places as well.
If 0.442 was intended by your teacher, and it's not a typo, then the answer would be E) None of the choices given.
Answer:
they would fall at different speeds
Explanation:
The speed at which each falls is dependent on air resistance
Answer:
#See details below.
Explanation:
-An electronic oscillator is an electronic circuit that produces a periodic, oscillating electronic signal, often a sine wave or a square wave.
-They produce continuous, repeated, alternating waveform without any input.
-Oscillators convert <em>unidirectional </em> direct current (DC) from a power supply to an alternating current (AC) signal of the desired frequency as determined by the circuit components.
Answer:
C) Initial velocity and angle
Explanation:
The path of the projectile motion is a parabolic path. The motion of a projectile motion is studied by splitting the motion into 2 mutually perpendicular components; one along the horizontal x axis and other vertical y axis.
The position of the projectile at any time 
is given as:
Where,
From the above equations, we conclude that,
The projectile motion depends on two factors:
i. Initial velocity (
)
ii. Angle of projection (
)
Option C is correct.
Answer:
Output varies
Explanation:
Here the outputs of gallons of gasoline and flight fuel is mentioned of two refineries namely Refinery EM and Refinery CG. The output has been mentioned with respect to one barrel of crude oil. So, one barrel of crude is used by both the refineries.
So, here the output (gallons of gasoline and flight fuel) varies while the input (one barrel of crude oil) remains constant.
