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At the end of most landing runways in airports, an extension of the runway is constructed using a special substance called form Crete. Form Crete can support the weight of cars, but crumbles under the weight of airplanes to slow them down if they run off the end of a runway. g=9.8m/s^2
If a plane of mass1.60×105 kilogram is to stop from a speed of 24.0 m/s on a 150 meter long stretch of form Crete, Find the magnitude of the average force exerted on plane by the form Crete?
An aircraft takes off at 203 km/h after accelerating from rest at 2.14 m/s2. What is the minimum runway length required
A 300-m-wide river flows due east at a uniform speed of 4.4 m/s. A boat with a speed of 7.6 m/s relative to the water leaves the south bank pointed in a direction 25o west of north. How long does it take for the boat to cross the river
To test the quality of a tennis ball, you drop it onto the floor from a height of 4.00 m. What is the magnitude of its average acceleration during the contact with the floor
q. a 12.0 kg bucket of water of is suspended by a rope wrapped around a windlass which is the solid cylinder 0.500 m in
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×106 N, one at an angle 12.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
The images of astronomical and terrestrial telescopes are colored around the edges. Explain that. How can this "chromaticaberration" be avoided in practice?
A bucket of water with a mass of 6.0 kg is attached to a rope that is wound around a cylinder. What is the acceleration of the bucket
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
A car is driven east for a distance of 47 km, then north for 25 km, and then in a direction 29° east of north for 29 km. find (a) magnitude (in km) of car's total displacement from its starting point and (b) the angle (from east) of the car's total..
The plates of a parallel-plate capacitor have a separation of 2.28mm , and each has an area of 15.4cm2. find the magnitude of the electric field between the plates
1. if the frequency is variable and the length of the closed at both ends tube is fixed at 45 cm sketch the plastic
If 350 J of heat are added to 63 moles of a monatomic gas at constant volume, how much does the temperature of the gas increase
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