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Discuss the humidity in an air conditioned room and in a heated room in the winter. Why must we use a dehumidifier and humidifier? If the outside temperature is 41o F and room temperature is 68o F should we utilize dehumidifier why or why not
Two elastic particles, each with mass m, collide head on. Initially they have speeds v1 and v2. What are their speeds after the collision
Some object moves 220.0 m at an angle of 42° north of west. During this motion, a 68.0 N force acts on the same object, doing +5460.0 J of work on the object. what is this force's orientation
A hypothetical 40cm long arm is assumed to be weightless. What is the maximum weight that can be held in the hand if the muscle is attached 1 cm from the below
A 72 kg man stands on a spring scale in an elevator. Starting from rest, elevator ascends, attaining its maximum speed of 1.20 m/s in 0.80 s.
A 740 N diver drops form a board 9m above the waters surface. The acceleration of gravity is 9.81m/s^2. Find the diver's speed 4.7m above the water's surface
If a 60.0 kg person slides down an incline angled 25%u02DA below the horizontal and friction IS present with a coefficient of kinetic friction equal to k = 0.450. What is the person's acceleration
In a non-uniform gas, the equation of state is valid locally, as long as the density does not change too rapidly with position. Find the density as a function of height
q1. the critical angle for a special type of glass in air is 41.8. the index of refraction for water is 1.33. what is
Whenever two Apollo astronauts were on the surface of the Moon, a third astronaut orbited the Moon. Determine the period of the orbit
Your friend needs advice on her newest "acoustic sculpture." She attaches one end of a steel wire, of diameter 3.98 mm and density 7860 kg/m3, to a wall. What weight (in newtons) should she hang from the wire if the temperature is 17.5°C
A 747 with a wingspan of 60 m is flying across an area of the earth where the earth's magnetic field is 5 x 10 -4 T. how much potential difference is induced between the wing tips
A 1000N beam is loaded with a 2000N filing cabinet and supported by two cables. If the beam is 8 meters long and the filing cabinet is 2 meters from the left cable, what is the tension force in each cable? total of both tension? tension in left cable..
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