Taking the density of air to be 1.29 kg/m3, what is the magnitude of the linear momentum of a cubic meter of air moving with the following wind speeds? (a) 35 km/h b) 74 mi/h—the wind speed at which a tropical storm becomes a hurricane
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Taking the density of air to be 1.29 kg/m3, what is the magnitude of the linear momentum of a cubic meter of air moving with the following wind speeds?
(a) 35 km/h
b) 74 mi/h—the wind speed at which a tropical storm becomes a hurricane
A numerical problem based on linear momentum, which is to be accomplished.
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- Taking the density of air to be 1.29 kg/m3, what is the magnitude of the linear momentum of a cubic meter of air moving with the following wind speeds? (a) 48 km/h kg · m/s(b) 74 mi/h—the wind speed at which a tropical storm becomes a hurricane kg · m/sWhat is the acceleration due to gravity at a location where a 15-kilogram mass weighs 45 newtons? (A) 675 m/s? 8.7 Q: (B) 9.81 m/s? (C) 3.00 m/s? (D) 0.333 m/s?(a) Normally the human body can endure a temperatureof 105°F for only short periods of time without permanentdamage to the brain and other vital organs. What is thistemperature in degrees Celsius? (b) Ethylene glycol isa liquid organic compound that is used as an antifreezein car radiators. It freezes at −11.5°C. Calculate itsfreezing temperature in degrees Fahrenheit. (c) Thetemperature on the surface of the sun is about 6300°C.What is this temperature in degrees Fahrenheit?
- Calculate the kinetic energy of a ×9.41012kg comet moving at a speed of 39.0kms .Round your answer to 2 significant digits.A sample of volume 270 cm³ has a mass of 0.645 kg. (a) What is the density of the sample? (b) Is the material gaseous or condensed? g/cm3the net force on a vehicle that is accelerating at a rate of 1.5m/s2 is 1,800 newton’s . what is the mass of the vehicle to the nearest kilogram
- smoke particles in air typically have masses of the order of 10^-16 kg. The rapid, irregular motions of these particles caused by collisions with air molecules can be observed with a microscope. Assume a particular type of smoke particle has a mass of 3.00 x10^-16 kg and is in a room with a temperature of 300 K. a) if instead you were considering a hydrogen gas molecule (m= 3.34x10^-26 kg) at 300 K, would the average translational kinetic energy be larger than, smaller than or equal to that of the smoke particle? b) would the rms speed of the hydrogen atom be larger than, smaller than, or equal to that of the smoke particle?5) How many minutes is required for sunlight to travel from the Sun to Mars? (Assume the Sun is 1.14 x 10^8 km from Mars and that sunlight travels at 2.99 x 10^5 km/s.)(a) 0.00437 minutes (b) 0.157 minutes(c) 6.35 minutes (d) 381 minutes(e) 22,900 minutes Step by step use the conversion factors with starting point and put lines in between the numbers and cancel the units 6) Platinum is one of the most dense elements (d = 21.5 g/cm^3). What is the volume of a 10.0 g sample of the metal?(a) 0.465 cm^3(b) 2.15 cm^3(c) 21.5 cm^3(d) 215 cm^3(e) 465 cm^3 Step by step, use the conversion factors with starting point and put lines in between the numbers and cancel the units 7) A rare metal alloy is a superconductor at 77 K. What is the temperature in °C ?(a) -350°C (b) -196°C(c) -77°C (d) 196°C(e) 350°C Step by step use the conversion factors with starting point and put lines in between the numbers and cancel the units 8) The average distance from the Earth to the Sun is 1.50 x 10^8km.…Temperature differences on the Rankine scale are identical to differences on the Fahrenheit scale, but absolute zero is given as 0°R. (a) Find a relationship converting the temperatures TF of the Fahrenheit scale to the corresponding temperatures TR of the Rankine scale. TR = (b) Find a second relationship converting temperatures TR of the Rankine scale to the temperatures TK of the Kelvin scale. TK =
- 5) How many minutes is required for sunlight to travel from the Sun to Mars? (Assume the Sun is 1.14 x 10^8 km from Mars and that sunlight travels at 2.99 x 10^5 km/s.)(a) 0.00437 minutes (b) 0.157 minutes(c) 6.35 minutes (d) 381 minutes(e) 22,900 minutes Step by step use the conversion factors with starting point and put lines in between the numbers and cancel the units 6) Platinum is one of the most dense elements (d = 21.5 g/cm^3). What is the volume of a 10.0 g sample of the metal?(a) 0.465 cm^3(b) 2.15 cm^3(c) 21.5 cm^3(d) 215 cm^3(e) 465 cm^3 Step by step, use the conversion factors with starting point and put lines in between the numbers and cancel the units 7) A rare metal alloy is a superconductor at 77 K. What is the temperature in °C ?(a) -350°C (b) -196°C(c) -77°C (d) 196°C(e) 350°C Step by step use the conversion factors with starting point and put lines in between the numbers and cancel the units 8) The average distance from the Earth to the Sun is 1.50 x 10^8km.…A jogger runs at an average speed of 5.9 mi/h. (a) How fast isshe running in m/s? (b) How many kilometers does she run in98 min? (c) If she starts a run at 11:15 am, what time is it aftershe covers 4.75x10^4ft?A graduated cylinder (measuring cylinder) contains 27 mL of water at 25 °C and the mass of the water is 26.92 g. A sphere of iron with a diameter of 18.0 mm is added to the water in the graduated cylinder. The total mass of the water and the iron is 50.92 g. (The volume of a sphere is given by the expression: V = (4/3)ar³). (i) Calculate the total volume of the water and the iron in the graduated cylinder. (ii) Determine the density of iron at 25 °C? Show your calculations. (iii) Without doing any calculations, what do you think the density of 48.00 g of iron is at the same temperature? Explain your answer.