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An airplane maintains a speed of 573 km/h relative to the air it is flying through as it makes a trip to a city 689 km away to the north.
(a) What time interval is required for the trip if the plane flies through a headwind blowing at 38.1 km/h toward the south? h
(b) What time interval is required if there is a tailwind with the same speed? h
(c) What time interval is required if there is a crosswind blowing at 38.1 km/h to the east relative to the ground?
Students in a physics lab are to determine the specific heat of copper experimentally. They place 0.150 kg of copper shot into boiling water, what is the specific heat of copper
A pendulum is 1.20 metres long. What is the speed of the bob when it passes by its equalibrium position if it is pulled aside until it makes an angle of 25 degrees to vertical.
A planet of mass m = 8.15 Ã? 1024 kg is orbiting in a circular path a star of mass M = 6.05 Ã? 1029 kg. What is the orbital period (in earth days) of the planet Tplanet
A 500g ball swings in a vertical circle at the end of a 1.5-m-long string. When the ball is at the bottom of the circle, the tension in the string is 12N
What minimum coefficient of kinetic friction is required to bring the crate to a stop over a distance of 5.0 m along the lower surface.
A subway train starts from rest at a station and accelerates at a rate of 1.50m/s2 for 14.2s . It runs at constant speed for 69.6s and slows down at a rate of 3.51m/s2 until it stops at the next station. find total distance covered? express answer..
a long horizontal wire carries a current of 48 amps. A second wire, made of 2.5 mm diameter copper wire, determine direction of the current in the lower wire
Find the von Mises stress (in MPa) at the location of the strain gages.
Janet jumps off a high diving platform with a horizontal velocity of 1.55 m/s and lands in the water 1s later. How high is the platform? The acceleration of gravity is 9.80 m/s2.
Two children carry a lightweight 2.4m -long horizontal pole with a water bucket hanging from it. How far is the bucket from the older child
Water at a pressure of 3.00*10^5 Pa flows through a horizontal pipe at a speed of 1.00 m/s. The pipe narrows to one-fourth its original diameter
Calculate the period of a satellite orbiting the Moon, 94km above the Moon's surface. Ignore effects of the Earth
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