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a cargo plane is moving with a horizontal velocity of v=+220 m/s at a height of y=970m above level ground as shown in figure below when it releases ba package. ignoring air resistance, how much time will it take the package to reach the ground?
A drag racer crosses the finish line doing 216 mi/h and promptly deploys her drag chute, What force must the drag chute exert on the 850 kg car to slow it to 45.2 mi/h in a distance of 161 m
Chromium is produced by reacting with its oxide with aluminium. If 304 g of Cr2O3 and 108 g of Al completely react to form 204 g of Al2O3 how many grams of Cr are formed.
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
The lowest note on a grand piano has a frequency of 27.5 Hz. The entire string is 2.00 m long, What tension is needed to tune this string properly
Suppose a small boat is at the crest of this wave, 1.5 {rm m} above the equilibrium position. Illustrate what will the vertical position of the boat be 5 seconds later?
A block in the shape of a rectangular solid has a cross-sectional area of 4.50 cm2 across its width, a front-to-rear length of 16.0 cm, Whats the conductivity of the material
A 0.20 kg aluminium plate with an initial temperature of 20 degrees c slides down a 15.00m long surface that is inclined at 30 degrees to the horizontal.
A galvanometer has a coil resistance of 100 ohms and gives a full scale deflection when the potential difference across it is 0.0005 V. What size resistor (with a value measured in ohms) is required
Carol and Robin share a house. To get to work Carol walks north 2.5{\rm km} , while Robin drives west 8.0{\rm km} . how far apart are there two workplaces
The interior of a refrigerator has a volume of 0.600 m3. The temperature inside the refrigerator in 282 K, what is the mass of air inside the refrigerator
A generator connected to an circuit has an rms voltage of 120V and an rms current of 34mA. what is the inductive reactance of the circuit
With brakes fully applied, a 1430kg car decelerates from a speed of 74km/hr. What is the work done by the braking force in bringing car to a stop.
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