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Two ships are moving along a line due east. The trailing vessel has a speed of 16 km/h relative to a land-based observation point, and the leading ship has a speed of 59.5 km/h relative to the same station. The trailing ship transmits a sonar signal at a frequency of 1140 Hz. What frequency is monitored by the leading ship? Use 1410 m/s as the speed of sound in ocean water.
Based on the graph of kinetic energy given (gray curve in the graphing window), sketch a graph of the baseball's gravitational potential energy
7.22 x1013 electrons flow through a transistor in 3.55 ms. What is the current (in mA) through the transistor
The magnitude of the electrostatic force between two identical ions that are separated by a distance of 0.90 nmis 4.103×10-8 N, How many electrons are missing from (or have been added to) each ion
Water is being sprayed from a nozzle at the end of a garden hose of diameter 2.0 cm. what is the speed of the water inside the hose
Observer S detects two flashes of light. A big flash occurs at x1 = 1242 m and, 6.06 ?s later, a small flash occurs at x2 = 802 m. what is the time interval between the flashes
q1. a lighthouse that rises 49 above the surface of water sits on a rocky cliff that extends 19 from its base. a sailor
A heat pump has a coefficient of performance of 3.85 and operates with a power consumption of 7.14 103 W. How much energy does it extract from the outside air
an electron in an x-ray machine is accelerated through a potential difference of 1.00 X 10^4 V, What is the kinetic energy of the electron
A ball rolls off a table and falls 0.70 m to the floor, landing with a speed of 4.3 m/s. What is the magnitude of the acceleration of the ball just before it strikes the ground
Two lightbulbs operate on the same potential difference. What is the ratio of the current in bulb A to the current in bulb B
A guitar string is 108 cm long and has a mass of 3.4 g. From the bridge to the support post (L) is 70 cm, What is the frequency of the first overtone
A 31.0-kg crate rests on a horizontal floor, and a 72.5-kg person is standing on the crate. Determine the magnitude of the normal force that the crate exerts on the person
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