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Question1
An airplane is flying horizontally with speed 1000 (280) while an engine falls off. Neglecting air resistance, suppose it takes 27 for the engine to hit the ground.
a. Find out altitude of the airplane. (Use g=9.8m/s^2.)
b. Find out horizontal distance the airplane engine falls.
c. If the airplane somehow continues to fly as if nothing had happened, where is an engine relative to the airplane at the moment the engine hits the ground?
Question2
A car travels due east with a speed of 36.0 km/h. Raindrops are falling at a constant speed vertically with respect to Earth. The traces of the rain on side windows of the car make an angle of 46.0° with the vertical. Find out the velocity of the rain with respect to following reference frames. (Enter magnitude of the velocity.)
The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
Block B in the figure below weighs 730 N. The coefficient of static friction between block and table is 0.24. Find the maximum weight of block A for which the system will be stationary
A liquid of density 1.13 × 103 kg/m3 flows steadily through a pipe of varying diameter and height. At location 1 along the pipe the flow speed is 9.89 m/s and the pipe diameter is 10.1 cm
A 7.80-g bullet moving at 610 m/s penetrates a tree trunk to a depth of 5.80 cm, Use work and energy considerations to find the average frictional force that stops the bullet
A certain particle has the life time of 10^-7 s, while measured at rest. How far does it go before decaying if its speed is 0.99 c when it is created.
A centrifuge in a medical laboratory rotates at an angular speed of 3400 rev/min. Find the constant angular acceleration of the centrifuge
Jeffrey is driving his Toyota Prius the freeway and reaches his exit. The exit has a radius of curvature of 25m and is banked 38°. How fast can Jeffrey travel around the curve on a dry day
Find the maximum weight for the car if the springs should be compressed no more than 4.2 cm when the car is at rest
A block with mass m = 4.6 kg is attached to two springs with spring constants kleft = 37 N/m and kright = 51 N/m. What is the effective spring constant of the two springs
An ideal spring with a stiffness of 379N/m is attached to a wall, and its other end is attached to a block that has a mass of 16-kg. The spring/block system is then stretched away from the spring's relaxed position until 59J of mechanical potentia..
An 84 kg skier is being pulled by a boat with a force of 240 N causing the skier to accelerate at 1.4 m/s^2. Find out the drag force on the skier.
You can launch the proton from the surface of a sphere of with charge Q and radius R, from the center of a ring of charge Q and radius R, or from the center of a disk of charge Q and radius R. Which is the best choice.
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