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An engineer is designing a runway for a new airport. Of the planes which will use the airport, the lowest acceleration rate will be 3 m/s2. The takeoff speed of this plane will be 65 m/s.
a) Assuming the minimum acceleration, what is the minimum allowed length for the runway?
b) The runway is constructed to 150% of the minimum allowed length. An airplane accelerates down the new runway at 3.2 m/s2 for 25.5 s until it finally lifts off. Determine the distance traveled by the airplane before takeoff, and the distance between the airplane's takeoff point and the end of the runway.
Several vectors in the x-y plane are shown in the figure with their tails at the origin of the coordinate system and with a label at their heads
A 10.3 kg block is dragged over a rough, horizontal surface by a 63.6 N force acting at 21° above the horizontal. Find the total change in the block's kinetic energy
A laboratory vacuum pump can reduce the pressure to 1.0 × 10^-7 Pa. If the volume of the chamber is 0.500m^3 and the temperature is 27°C
Two identical 30 {rm g} particles each carry 3 {rm mu C} of charge. One is held fixed, and the other is located 1 {rm mm} away and released. Find the speed of the moving charge when it's 1{rm cm} from the fixed charge.
As part of a safety investigation, two 1900 {rm kg} cars travelling at 19 {rm m/s} are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 {rm s} to stop, and (b) car that hits a..
A pitcher throws a fastball horizontally at a speed of 150 km/h toward home plate, 18.4m away. If the batters combined reaction and swing times total 0.37s, how long can batter watch the ball after it has left the pitcher's hand before swinging? In t..
Heather and Jerry are standing on a bridge 51 above a river. Heather throws a rock straight down with a speed of 12. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Ignore air resistance.
Electric bees. As they fly through the air, honeybees can pick up a small amount of electric charge, Find the magnitude of the electric force on the bee in the electric field just above Earth's surface, 130N/C directed vertically downward
the position of a cart that is oscillating on a spring is given by the equation x= 12.3 cm cos [(1.26 s-1)t], velocity and acceleration of the cart
For a short time, the path of the plane is described by If the plane is rising with a constant velocity of 10 m/s, determine the magnitudes of the velocity and acceleration
A physics demo launches a ball horizontally while dropping a second ball vertically at exactly the same time. [Delayed Feedback] 1) Which ball hits the ground first?
The diameters of the main rotor and tail rotor of a single-engine helicopter are 7.53 m and 1.03 m, respectively. The respective rotational speeds are 449 rev/min and 4147 rev/min. Compute the speeds of the tips of both rotors.
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