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A child is in danger of drowning in the Merimac river. The Merimac river has a current of 3.1 km/hr to the east. The child is 0.6 km from the shore and 2.5 km upstream from the dock. A rescue boat with speed 24.8 km/hr (with respect to the water) sets off from the dock at the optimum angle to reach the child as fast as possible. How far from the dock does the boat reach the child? d = km
A 8500 kg boxcar traveling at 16.8 m/s strikes a second boxcar at rest. What is the mass of the second car
A train engineer blows a whistle that has a frequecy of 4.0 X 10^2 hz as the train approaches a station. if the speed of the train id 25 m/s, what frequency will be heard by a person at station.
A ladder 5.8 m long leans against a wall inside a spaceship. From the point of view of a person on the ship, the base of the ladder is 2.4 m from the wall, Find the angle the ladder makes with the floor
questiona 5kg block at first has a speed of 1.5ms at the top of a 30?nbspincline and slides a distance of 5.0m down
80 pF capacitor and a 320 pF capacitor are both charged to 2.8 kV. They are then disconnected from the voltage source and are connected together, Find the resulting potential difference across each capacitor
Two identical conducting small spheres are placed with their centers 0.395 m apart. Find the electric force exerted by one sphere on the other
Airplane emf A Boeing KC-135A airplane has a wingspan of 39.9 m and flies at constant altitude in a northerly direction with a speed of 840 km/hr. what is the induced emf between the wing tips
An airplane with a speed of 87.7 m/s is climbing upward at an angle of 35.1 ° with respect to the horizontal. determine the angle of the velocity vector of the package
PSI (x) is the wave function for a particle moving along the x axis. Write the mathematical that will allow us to calculate the probability that the particle is detected in the inteval X=A to X=B
In a series R-L-C circuit, R = 280? , XC = 240?and XL = 600? . The average power consumed in the resistor is 60.0W, What is the power factor of the circuit
A soccer player kicks a rock horizontally off a 34.0-m-high cliff into a pool of water. what was the initial speed given to the rock
You somehow manage to get a gold ring with inner diameter 2.19 cm stuck on your finger, even though your knuckle has a diameter of 2.2 cm. To what temperature would you have to heat the ring
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