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1) What is the density of water vapor in g/m3 on a hot dry day in the desert when the temperature is 40.0°C and the relative humidity is 16.0%? 2) If the relative humidity is 84.0% on a muggy summer morning when the temperature is 20.0°C, what will it be later in the day when the temperature is 30.0°C, assuming the water vapor density remains constant? 3) On a certain day, the temperature is 30.0°C and the relative humidity is 88.0%. How many grams of water must condense out of each cubic meter of air if the temperature falls to 15.0°C. Such a drop in temperature can, thus, produce heavy dew or fog. 4) Rubbing your hands together warms them by converting work into thermal energy. If a woman rubs her hands back and forth for a total of 22 rubs, at a distance of 7.00 cm per rub, and with an average frictional force of 48.0 N, what is the temperature increase? The mass of tissues warmed is only 0.110 kg, mostly in the palms and fingers. 5) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. a) How many kilocalories per gram are there in a 3.03-g walnut if the energy from burning it is transferred to 0.420 kg of water held in a 0.092-kg aluminum cup, causing a 45.7°C temperature increase? b) If a serving of walnut consists of 16.0-g, how many kcal is consumed per serving? (Note: Food packaging energy content is labeled as "Cal" which is equivalent to "kcal".)
A tube of radius 5cm is connected to tube of radius 1 cm as shown above. Water is forced through the tube at a rate of 10 liters/min. The pressure in the 5 cm tube is 1×10^5 Pa. The density of water is 1000kg/m3. Suppose that the water is no visco..
A ferromagnetic metal at very low temperatures has a specific heat capacity given by c(T)= zT+yT^3+zT^(3/2). find the entropy increase due to this process
A 16000kg airplane lands with a speed of 92m/son a stationary aircraft carrier deck that is 115 mlong. Find the work done by nonconservative forces in stopping the plane
What is the terminal speed for an 84.00 skier going down a 38.0 degree snow-covered slope on wooden skis = 0.06? Assume the skier is 1.70 m tall and 0.500 m wide.
Racing drivers like to warm up the tyres of their car as soon as possible. One reason is that warm tyres grip the road better but the temperature also affects the pressure of the air into he tyres.
An equipotential surface that surrounds a point charge q has a potential of 585 V and an area of 1.27 m2. Determine q
A charge q = +929 ?C is uniformly distributed on a thin nonconducting ring of mass m = 0.60 g and radius r = 2.60 cm. What is the final angular velocity of the ring
An electric heater carries a current of 16.5 A when operating at a voltage of 1.50 102 V. What is the resistance of the heater
Light of intensity 2.5W/m2 passes through the pupil of one of your eyes and eventually falls on your retina. The radius of the pupil is controlled by the iris.
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.64s, What is the mass of the grapes
What is the maximum tension. The gastrocnemius muscle, in the back of the leg, has two portions, known as the medial and lateral heads. Assume that they attach to Achilles tendon. The cross-sectional area of each of these two muscles is typically f..
A Cadillac of mass2240 kg going east collides with a Geo of mass1250 kg headed north at 25 km/h on a level highway. How fast was the Cadillac moving before the collision
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