A Tesla Model 3 uses about 32 kW of power to hold a steady speed of...
A Tesla Model 3 uses about 32 kW of power to hold a steady speed of 30 m/s .
a) What average force does the Tesla's engine generate while running at this speed?
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A Tesla Model 3 uses about 32 kW of power to hold a steady speed
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Pictured below is a model for a train that is traveling at the steady speed of 50 m/s through standard air at sea level. The cross section of the train will be modeled as a semicircle so that the...
Pictured below is a model for a train that is traveling at the steady speed of 50 m/s through standard air at sea level. The cross section of the train will be modeled as a semicircle so that the train itself is half of a circular cylinder. Neglect the effects of any airflow beneath the train. The engine car drives the train with a propulsive thrust, and there is a coupling connecting the engine car to the passenger car. Assume...
Using supply analysis, explain how is supply applied in the article below about Tesla.? Thank you...
Using supply analysis, explain how is supply applied in the article below about Tesla.? Thank you so much for your help. Factors Affecting Supply (Tesla) The Cost of Production and Cutting Off Unprofitable Vehicle Models In January of 2019, Tesla cut 7% of its workforce to ramp up production of its Model 3 sedans, reducing the price of its products and boosting margins. At the same time, the company discontinued the cheapest versions of its Model S sedans and Model...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 2.20...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2....
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
In CIty A, the average wind speed is known to be about 4.72 m/s, while the...
In CIty A, the average wind speed is known to be about 4.72 m/s, while the average wind speed in city B is known to be about 8.19 m/s. Consider the power output given by Pout=1/2 ηρAv3. What is the ratio of energy output of the wind turbine in City B to City A? Select one: a. 0.58 b. 3.01 c. 5.22 d. 1.74 e. 0.19
At high speed, the main retarding force on an automobile is air drag. We haven’t specifically...
At high speed, the main retarding force on an automobile is air drag. We haven’t specifically studied air drag yet, because it’s quite simple. The drag force is very well approximated as Fdrag = γv^2 where γ depends on the shape and size of the car. Consider a car with γ = 1.9N/ (m/s)^2 and an engine that develops a maximum power s of 75 kW. (Remember, this means that the engine does 75 kJ of work per second.) (a)...
The average speed of a nitrogen molecule in air is about 6.70 ✕ 102 m/s, and...
The average speed of a nitrogen molecule in air is about 6.70 ✕ 102 m/s, and its mass is about 4.68 ✕ 10-26 kg. (a) If it takes 2.90 ✕ 10-13 s for a nitrogen molecule to hit a wall and rebound with the same speed but moving in an opposite direction (assumed to be the negative direction), what is the average acceleration of the molecule during this time interval? m/s2 (b) What average force does the molecule exert on...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the aisle to her seat at a speed of 3 m/s. What frequency does she hear when the note A (440 Hz) is played by an instrument of stage if the speed of sound in the concert hall is 343 m/s? 2. A fire engine with a 600 Hz siren approaches then passes a stationary observer. If the engine is traveling at 20 m/s on...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the aisle to her seat at a speed of 3 m/s. What frequency does she hear when the note A (440 Hz) is played by an instrument of stage if the speed of sound in the concert hall is 343 m/s? 2. A fire engine with a 600 Hz siren approaches then passes a stationary observer. If the engine is traveling at 20 m/s on...
MIET 2480-Renewable Energy Systems-15 Jun 2019 Quiz 2: Wind Power Adeol Summanleknl Name: Student ID: 1....
MIET 2480-Renewable Energy Systems-15 Jun 2019 Quiz 2: Wind Power Adeol Summanleknl Name: Student ID: 1. You have a wind site with average wind speed of 8.2 m/s over 1 year, how the average power density in the wind is calculated, given density of the wind as 1.225 kg/m3? a. (1.225) (8.23) -338 W/m2 b. The estimated value closest to the actual average power density is calculated knowing the wind speed frequency distribution fi for each wind speed vi measured...
Pictured below is a model for a train that is traveling at the steady speed of 50 m/s through standard air at sea level. The cross section of the train will be modeled as a semicircle so that the train itself is half of a circular cylinder. Neglect the effects of any airflow beneath the train. The engine car drives the train with a propulsive thrust, and there is a coupling connecting the engine car to the passenger car. Assume...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the aisle to her seat at a speed of 3 m/s. What frequency does she hear when the note A (440 Hz) is played by an instrument of stage if the speed of sound in the concert hall is 343 m/s? 2. A fire engine with a 600 Hz siren approaches then passes a stationary observer. If the engine is traveling at 20 m/s on...
Solve the following Doppler Shift problems. Show your work. 1. A concert goer hurries down the aisle to her seat at a speed of 3 m/s. What frequency does she hear when the note A (440 Hz) is played by an instrument of stage if the speed of sound in the concert hall is 343 m/s? 2. A fire engine with a 600 Hz siren approaches then passes a stationary observer. If the engine is traveling at 20 m/s on...
MIET 2480-Renewable Energy Systems-15 Jun 2019 Quiz 2: Wind Power Adeol Summanleknl Name: Student ID: 1. You have a wind site with average wind speed of 8.2 m/s over 1 year, how the average power density in the wind is calculated, given density of the wind as 1.225 kg/m3? a. (1.225) (8.23) -338 W/m2 b. The estimated value closest to the actual average power density is calculated knowing the wind speed frequency distribution fi for each wind speed vi measured...
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