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1. The drag coefficient for a newly designed hybrid car is predicted to be 0.21. The cross-sectional area of the car is 30 ft2. Determine the aerodynamic drag on the car when it is driven through still air at 55 mph.
2. A 5-m-diameter parachute of a new design is to be used to transport a load from flight altitude to the ground with an average vertical speed of 3 m/s. The total weight of the load and parachute is 200 N. Determine the approximate drag coefficient for the parachute.
find the phase change undergone by its electric vector
A proton of mass mp and charge qp =e, deuteron of mass 2mp and charge qd =e, Find the velocities and derive the radii of the paths for deuteron and alpha particle in term of the mass and charge of proton
A cube of mass m = 7.25 kg is placed on an inclined plane of mass M = 12.47 kg, which makes an angle ? = 39.80° with the horizontal. What is the normal force on the inclined plane
The circuit in figure 32-34 consists of switch S, a 20.0MΩ resistor, a 12.0V ideal battery, and an air filled capacitor. The capacitor has parallel circular plates of radius 5.00 cm, separated with 3.00 mm. At time t =0, switch S is closed to begin c..
An electron (mass: 9.11x10-31 kg; charge:1.60x10-19 C) moves from location A to location B solely under the influence of conservative forces, what is the speed of the electron at this point
A linear accelerator produces a pulsed beam of electrons. The pulse current is 0.55 A, and the pulse duration is 0.14 μs. How many electrons are accelerated per pulse?
for an initial velocity of 15 m/s and a launch of 55 degrees, where will the projectile strike the side of the hill
A 5.4kg object is suspended by a string from the ceiling of anelevator. The acceleration of gravity is 9.8m/s^2. Determine the tension in the string if it is accelerating upward at a rate of 3.8m/s^2.
A cubic box of volume = 0.34300m^3 is filled with air at atmospheric pressure at 20.000*C. What is the net force on one side of the box
A bullet is fired horizontally at 800 m/s and strikes a target that is 160 m from the gun. If the marksman hears the sound of the impact on the target 0.67 s after he fires the gun, what is the speed of sound?
A girl of mass m = 54 kg is pulling a sled up a slippery slope. The coefficient of friction between the boots of the girl and the slope is u_s = 0.157 kg. what is the mass of the sled
the string in the figure below is l 148 cm long has a ball attached to one end and is fixed at its other end. the
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