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A rescue plane wants to drop supplies to isolated mountain climbers on a rocky ridge 235 m below if the plane is traveling horizontally by a speed of 250 km / h (a) how far in advance of the recipients should the goods be dropped
a projectile is launched with an initial speed of 40 ms at an angle of 20deg above the horizontal. the projectile lands
While a woman stands with two feet on a scale, the scale reads 490 N. When she lifts one foot, scale reads more or less.
An AC generator has 80 rectangular loops on its armature. Eachloop is 13 cm long and 6 cm wide. The armature rotates at 1500 rpmabout an axis parallel to the long side.
Each surface exerts a force on the bottle that is perpendicular to the surface. What is the magnitude of each of these forces.
A 0.26- rock is thrown vertically upward from the top of a cliff that is 32m high. When it hits the ground at the base of the cliff, find the initial speed of the rock
a carnot engine absorbs 53.2 kj as heat and exhausts 33.0 kj as heat in each cycle. calculate a the engines efficiency
A hot air balloon rises from the ground with a velocity of 1.8 m/s.A champagne bottle is opened to celebrate takeoff, expelling thecork horizontally with a speed of 4.0 m/s. How long does the cork remain in the air
A proton enters a uniform electric field by an initial velocity of 6x105 m/s in the x direction. The field has strength of 900 N/C, and is in the -y-direction, pointing from one plate to another as shown. If the plates are 10 cm long, how far is the ..
question what is the wavelength in nm of radiation that has an energy content of 1.81x103 kjmol?in which region of the
What is the highest rms voltage that can be supplied to this component while staying below the voltage limit in the warning
During a testing process, a worker in a factory mounts a bicycle wheel on a stationary stand and applies a tangential resistive force of 120 N to the tire's rim. what force must be applied to the chain
Two metal rods, one silver and the other gold, are attached to each other. The free end of the silver rod is connected to a steam chamber, How much heat flows through the two rods in 60 s
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