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You are assigned to design a ride for an amusement park. The ride drops riders from the top of a tall tower and let's them free fall for a short time before bringing them to a stop. For the riders' safety, you must make sure the riders do not experience an acceleration greate than 2g. Assume the riders have a constant acceleration while they slow down and come to a stop. If the riders are to free fall for 2.5 seconds, what is the minimum height of the tower?
Two violins are supposed to be playing concert A, at 440 Hz [{\rm Hz}], What beat frequency do the violinists hear
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
Calculate the rms speed of a molecule of O gas O2 at 20C. Atomic weight of O= 16u
You have no information about the angle or velocity of the ball, but you decide to make some calculations. Ignore air drag, and assume constant gravitational acceleration equal to 9.8 m / s2. Which choice best represents the speed of the ball when..
An ocean liner leaves New York City and travels 37.0° north of east for 171 km. How far east and how far north has it disappeared? In other words, what are the magnitudes of the components of the ship's displacement vector in the directions.
The coefficient of kinetic friction for wood sliding on wood is 0.20. What is the final speed of the bullet
A 0.06-kg lead bullet traveling 298 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs, what is its temperature change
q1. dennis driving his 600 kg car makes a 90 degree turn. his speed before the turn is 15.0 ms and after the turn are
A Carnot refrigerator is driven by a small motor whose output of mechanical power is 100W. how much heat will be removed from the cool reservoir in one hour
A 0.710 m long solenoid is formed by wrapping 450 turns of wire around a hollow cylinder with a radius of 0.280 m. Calculate the energy stored in the field
When white light is incident on asheet of transparent material, it is found that the emerging lightis red, What is the work function of the material
a describe internal normal shear force and moment inside a member of a frame. what causes these questions ?b describe
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