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A sample of air at a temp of 298K has a relative humidity of 10%. If the temp of 1.00L of this air is decreased to 273K, what will the relative humiduty be at the lower temp? The vapor pressure of air at 298K is 24.0 torr and 4.5 torr at 273K. Please show work.
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
A thin film of oil (n = 1.24) is located on a smooth, wet pavement. When viewed perpendicular to the pavement, How thick is the oil film
Water flows at a speed of 1.7 m/s throughout a horizontal pipe having a circular cross section 5 cm in diameter. The pipe widens to a diameter of 14 cm. Treat the water as an idea fluid.
A normal electric power cord consists of two parallel conductors about 4 mm apart. Estimate the magnetic field strength (in N/C) about 30 cm from a linear 25 m power cord connected to a 100 W lamp
A 75-m long train begins unknown uniform acceleration from rest.The front of the train has a speed of 23 m/s when it passes arailway worker who is standing 180m from where the front of the train started. What will the speed of the last car be as i..
A 1.20 liter flask contains a certain quantity of ideal gas at 305 K. next an equal number of molecules of the same gas are added to the flask, after which the absolute pressure is 1.30 times its original value. What is the final temperature.
A sonar echo returns to a submarine 1.40 s after being emitted. What is the distance to the object creating the echo
An oil drop carries one excess electron and weighs 9.3 x10-15 N. What electric field strength is needed to suspend the drop so it is motionless.
A car is traveling with a constant speed 80 miles per hour a road that makes half a circle. What is the velocity of the car
Bacteria vary somewhat in size, but a diameter of 2.00?m is not unusual, What would be surface area (in square millimeters) of such a bacterium, assuming that it is spherical
In which collision is the impulse on the cart greater. The magnitude of the charge on an electron is 1.6e-19 C
An 8.7 hour trip is made at an average speed of 73 km/hr. If the first third of the trip (chronologically) was driven at 96.5 km/hr, what was the average speed for the rest of journey.
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