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The drone shown schematically in the Figure is planned to use for package delivery. The combined...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel test in a large wind tunnel. The wind speed is60 mih 00 km/h (60 mi/h) and the drag force measured on a scale as shown in the adjacent drawing is 302 N (68 lbf). The frontal area of the car is 2.068 m2 (22.26 ft2) Neglect any ground effect due to the floor not moving relative to the car (a) Calculate the drag coefficient...
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass...
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass of the bicycle plus woman is 50 kg. She is riding into a 20-km-per hour wind. The only forces acting on the woman are drag force and weight. If the woman and bicycle together have a projected area of 1.0 m2, and the coefficient of drag is 1.1, how fast is the bicycle going relative to the ground? The density of air is 1.23...
Figure 5b. Open Cabriolet. Ca= 0.45 b). A pump in fig.6 is required to pump water...
Figure 5b. Open Cabriolet. Ca= 0.45 b). A pump in fig.6 is required to pump water at 60 L/s from point 1 to 2. The water is pumped using a 0.1 m diameter pipe. Taking the overall pump effi- ciency to be 70%, determine the power required by the pump and the pressure values at point Land M. Consider the density of water to be 1000 kg/m3 and express your answers for pressure in kN/m2. 4. a) A drag coefficient...
A car travels at a constant velocity of 90 km/h along an expressway under-ambient temperature and...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
Could someone help me by answering all of this questions from Q7) A to D and...
Could someone help me by answering all of this questions
from Q7) A to D and Q8) A to C. Thank You
Q.C7 An 80 kg cyclist is riding her 15 kg bicycle down a hill with a slope of 12 degrees without pedalling or braking. The cyclist has a frontal area of 0.45 m and a drag coefficient of 1.1 in the upright position. Taking air density to be 1.25 kg/m2, and neglecting bearing friction and rolling resistance (a)...
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the fi...
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the figure below. Air enters the compressor at 1 bar and 4°C and is compressed to 3 bar. Part of the air exiting the compressor enters the refrigeration cycle and remaining enters the power cycle. The air supplied to the refrigeration cycle from the compressor is cooled to the 55°C at constant pressure in a heat exchanger and then expands in a turbine to 1...
A car weighing 13 kN has an engine with performance characteristics as shown in Figure 1...
A car weighing 13 kN
has an engine with performance characteristics as shown in Figure 1
below. The car equipped with a 5-speed manual transmission system
with 90% efficiency, final drive gear ratio (final drive) is 3.0.
The equivalent weight of the rotating parts of driveline at 3500
rpm is 300 N with a radius of gyration of 10.1 cm. Each tyres is 66
cm in diameter with a radius of gyration of 25.2 cm and weighs
220.4 N. Each...
N9M.2 and N9B.8 the ground WI time will pass before it returns to he g resistance.) 85 N9B.7 Estimate the terminal speed for a ping-pong bal so whose diameter is 1.5 in. and whose mass is 2.5 g....
N9M.2 and N9B.8
the ground WI time will pass before it returns to he g resistance.) 85 N9B.7 Estimate the terminal speed for a ping-pong bal so whose diameter is 1.5 in. and whose mass is 2.5 g. (For P a sphere, C is roughly 0.5.) N9B.8 A person's terminal speed in air is typically about 60 m/s. If so, what is the value for CA for a falling person? (Assume that m 60 kg.) N9 Modeling N9M.1 Estimate the...
To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design...
To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side rearview mirrors has changed drastically in recent decades from a simple circular plate to a streamlined shape. Determine the amount of fuel and money saved per year as a result of replacing a 13-cm-diameter flat mirror by one with a hemispherical back, as shown in the figure. Assume the car is driven 21,200 km a year at an average speed of 80...
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...
The drag coefficient of a car is to be determined experimentally with a full scaleWind tunnel test in a large wind tunnel. The wind speed is60 mih 00 km/h (60 mi/h) and the drag force measured on a scale as shown in the adjacent drawing is 302 N (68 lbf). The frontal area of the car is 2.068 m2 (22.26 ft2) Neglect any ground effect due to the floor not moving relative to the car (a) Calculate the drag coefficient...
A woman rides a bicycle down a hill with a 15% slope (rise/run). The combined mass of the bicycle plus woman is 50 kg. She is riding into a 20-km-per hour wind. The only forces acting on the woman are drag force and weight. If the woman and bicycle together have a projected area of 1.0 m2, and the coefficient of drag is 1.1, how fast is the bicycle going relative to the ground? The density of air is 1.23...
Figure 5b. Open Cabriolet. Ca= 0.45 b). A pump in fig.6 is required to pump water at 60 L/s from point 1 to 2. The water is pumped using a 0.1 m diameter pipe. Taking the overall pump effi- ciency to be 70%, determine the power required by the pump and the pressure values at point Land M. Consider the density of water to be 1000 kg/m3 and express your answers for pressure in kN/m2. 4. a) A drag coefficient...
A car travels at a constant velocity of 90 km/h along an
expressway under-ambient temperature and pressure conditions. The
width of the car is 1.5 m while its height is 1.2 m. The wheelbase
(length between the front and rear wheels) is 2.5 m. The drag
coefficient is 0.22.
[Use
air, ambient density of the air = 1.12 kg/m3 and,
fuel, density of the fuel = 930 kg/m3. You may neglect
any energy contained in the exhaust gases and any...
Could someone help me by answering all of this questions
from Q7) A to D and Q8) A to C. Thank You
Q.C7 An 80 kg cyclist is riding her 15 kg bicycle down a hill with a slope of 12 degrees without pedalling or braking. The cyclist has a frontal area of 0.45 m and a drag coefficient of 1.1 in the upright position. Taking air density to be 1.25 kg/m2, and neglecting bearing friction and rolling resistance (a)...
3. Consider a dual-loop cycle utilizing air as the working fluid is shown schematically in the figure below. Air enters the compressor at 1 bar and 4°C and is compressed to 3 bar. Part of the air exiting the compressor enters the refrigeration cycle and remaining enters the power cycle. The air supplied to the refrigeration cycle from the compressor is cooled to the 55°C at constant pressure in a heat exchanger and then expands in a turbine to 1...
A car weighing 13 kN
has an engine with performance characteristics as shown in Figure 1
below. The car equipped with a 5-speed manual transmission system
with 90% efficiency, final drive gear ratio (final drive) is 3.0.
The equivalent weight of the rotating parts of driveline at 3500
rpm is 300 N with a radius of gyration of 10.1 cm. Each tyres is 66
cm in diameter with a radius of gyration of 25.2 cm and weighs
220.4 N. Each...
N9M.2 and N9B.8
the ground WI time will pass before it returns to he g resistance.) 85 N9B.7 Estimate the terminal speed for a ping-pong bal so whose diameter is 1.5 in. and whose mass is 2.5 g. (For P a sphere, C is roughly 0.5.) N9B.8 A person's terminal speed in air is typically about 60 m/s. If so, what is the value for CA for a falling person? (Assume that m 60 kg.) N9 Modeling N9M.1 Estimate the...
To reduce the drag coefficient and thus to improve the fuel efficiency of cars, the design of side rearview mirrors has changed drastically in recent decades from a simple circular plate to a streamlined shape. Determine the amount of fuel and money saved per year as a result of replacing a 13-cm-diameter flat mirror by one with a hemispherical back, as shown in the figure. Assume the car is driven 21,200 km a year at an average speed of 80...
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...
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