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An airplane has an effective wing surface area of 14 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 270 m/s, while the air speed beneath the wings is 259 m/s. What is the weight of the plane? N
consider a merry-go-round in the shape of a uniform disc of mass 400 kg and radius 3 m. two children each of mass 20 kg
question1prairie dogs live in underground burrows with at least two entrances. one entrance is higher above ground and
A heat engine with an efficiency of 20.0% performs 2500 J of work. How much heat is discharged to the lower temperature reservoir
The helium atom has a volume of about 3 x 30^-30 (m^3). What fraction of a volume of helium gas at STP is actually occupied by atoms
A screen 1.8 m wide is located 3.6 m from a pair of slits illuminated by 620 nm laser light, Find the highest-order bright fringe that will appear on the screen of the slit spacing is .20 mm
A barge has vertical sides and a flat bottom of 320 ft^2 area. when partially filled, the barge is immersed in fresh water to a depth of 2 ft. upon removal of the load the barge rises 16.0 in.
For the fan powered glider moving along the track the equation of the motion is. for the exploration of sensors labs there many things to look at. One is the g sensor. what is the one of the bottons on that sensor?
A +6.00-µC charge is moving with a speed of 8.80 104 m/s parallel to a very long, straight wire. Find the magnitude and direction of the force on the charge
A hunter aims directly at a target (on the same level) 120 m away. If the bullet leaves the gun at a speed of 290 m/s, by how much will it miss the target
q1. radio amateurs are permitted to communicate on the 20-meter band. what frequency of radio waves corresponds to a
The length of a simple pendulum is 0.87 m and the mass of the particle (the "bob") at the end of the cable is 0.21 kg. What is the angular frequency of the motion
Light from a sodium light with wavelength 589 nm illuminates two narrow slits. The fringe spacing on a screen 180 cm from the slits is 5.00mm. what is the spacing d between the slits
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