A hybrid car can travel 40 miles per gallon. Approximately how many gallons of fuel will the car need to travel 20 km?A. 0.3
B. 0.8
C. 2.5
D. 3.2
Answers
Answer:
correct option is A
20 km we need 0.3 gallon fuel
Explanation:
given data
gallon = 40 miles
distance = 20 km
to find out
how many gallons of fuel
solution
we know that 20 km = 12.4274 miles
and
we know here car is travel 40 miles per gallon
it mean here that
40 miles = 1 gallon
1 miles = 1/ 40 gallon
and
12.4274 miles = 1/40 × 12.4274 gallon
solve it to get gallon of 20 km or
12.4274 miles = 0.31 gallon
so in 20 km we need 0.3 gallon fuel
correct option is A
Answer:
The number of gallons are 0.3.
A is correct option.
Explanation:
Given that,
A hybrid car can travel 40 miles per gallon
We need to calculate the mile/gallon to km/gallon
Gallon is the unit of liquid and miles and kilometer are the unit of distance.
We need to calculate the number of gallons of fuel
Number of gallon
Hence, The number of gallons are 0.3.
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GPE = mgh
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h = height
For a given gpe of 20 J, the height can be calculated as follows:
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Whichever one has the greatest gain in speed during that time period has.
If I could see the picture or the rest of the information that goes with that
question, I could tell you exactly which one it is.
The dragster, which can accelerate at 26 m/s², is likely to have a higher acceleration between 10 to 15 seconds compared to a typical sports car with an Acceleration rate of 5 m/s².
To determine which car has the greatest acceleration between 10 seconds to 15 seconds, it is necessary to understand the concept of acceleration.
Acceleration is defined as the rate of change of velocity per unit of time. In this context, it refers to how quickly a car can increase its speed.
In the data provided, the sports car and the dragster are pointed out.
The dragster is capable of an acceleration of 26 m/s², whereas a typical sports car can only accelerate at about 5 m/s².
Therefore, it can be inferred that the dragster would have a higher acceleration in the time period given (10 seconds to 15 seconds), as compared to the sports car.
For a more specific comparison, speed or velocity data of the cars at the start (10 seconds) and end (15 seconds) of this period would be required.
The change in velocity divided by the time period gives the acceleration. Unfortunately, such data is not available in the provided context.
Learn more about Acceleration here:
#SPJ6
The probable question may be:
Which car has the greatest acceleration dragster or typical sports car during the time interval 10 seconds to 15 seconds.
Answers
Answer:
C. work function
Explanation:
In the photoelectric effect, the energy of the incident photon is used in part to extract the electron from the metal (and this energy is called work function) and the rest is converted into kinetic energy of the electron. In formula:
where
hf is the energy of the incident photon, which is the product between h (the Planck constant) and f (the photon's frequency)
is the work function
K is the kinetic energy of the photoelectron as it leaves the material