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An airplane maintains a speed of 630 km/h relative to the air it is flying during as it makes a trip to a city 750 km away to the north. (a) What time interval is needed for the trip if the plane flies through a headwind blowing at 35.0 degrees km/h toward the south? (b) What time interval is required if there is a tailwind with the same speed? (c) What time interval is needed if there is a crosswind blowing 35.0 km/h to the east relative to the ground?
A 55.0 kg ice skater is moving at 4.00 m/s when she grabs theloose end on a rope, the opposite end of which is tied to a pole. Determine the force exerted by the horizontal rope on her arms
2.0A current in 560 turns primary coil of a transformer causes 14 A to flow in the secondary coil. How many turns are in the secondary coil
A firefighter at a distance d from a burning building directs a stream of water from a fire hose at angle θi above the horizontal as shown in Figure. If the initial speed of the stream is vi. At what height h does the water strike the building?
Attached to each end of a thin steel rod of length 1.10 m and mass 6.00 kg is a small ball of mass 1.02 kg. The rod is constrained to rotate in a horizontal plane about a vertical axis through its midpoint. At a certain instant, it is rotating at ..
An infinite plane of charge (see figure below) has a charge perunit area of σ = 2.7 µC/m2. What is the change in the electric potential between points that are2.3 m (initial) and 4.6 m (final) from the plane?
Find the ground state energy of an electron confined to a 1 D box of length 0.1 nm. Show an energy level diagram showing the first 5 levels. Calculate the wavelengths of the photons corresponding to transitions between the third level and the ground ..
What is the mass of the liquid in the vat.
Two children seat themselves on a seesaw. The one on the left has a weight of 360 N while the one on the right weighs 480 N. The fulcrum is at the midpoint of the seesaw. If the child on the right is not at the end however is 1.25 m from the fulcrum ..
Compare 900 on the AM dial to 90 on the FM dial. Which has the longer wavelength? By what factor is it larger
Two in-phase speakers 2.0 m apart in a plane are emitting 1800 Hz sound waves into a room where the speed of sound is 340m/s . Is the point 4.0m in front of one of the speakers, perpendicular to the plane of the speakers, a point of maximum constr..
a 25 micro f c1 and a 40 micro f capacitor c2 are charged by being connected across separate 70v batteries. the caps
a projectile is fired with an initial velocity of 35 m/s at an angle of 30 degrees above horizontal of a 30 feet tall building. find the velocity of the projectile at the ground
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