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A parachutist jumps out of an airplane and acceleratea with gravity to a maximum velocity of 58.8 m/s in 6.o seconds. He puiis the parachute cord and decelerates for 4 seconds. He then descents at 10.0 m/s for 60 .0 second, reaching the ground. From what height did the parachutist jump?
A standing wave on a 0.8 m string is described by the relation y = 0.02 sin 5nx cos 100 nt Si units, What are the amplitude, frequency, and wavelength
Using the medium p model of the line, Find the current, voltage, reactive power, real power, & power factor at the sending end of the line.
The lens and mirror are separated by d = 1.00 m and have focal lengths of +80 cm and -50 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.
How several meters away is a cliff if an echo is heard 0.587 s after the original sound? Assume that sound traveled at 343 m/s on that day.
Two speakers, one directly behind the other, are each generating a 275 Hz sound wave. What is the smallest separation distance between the speakers that would produce destructive interference at a listener standing in front of them? Assume that th..
How much time does the object take to reach the ground.
A guitar string is 90.0 cm long and has a mass of 3.27g . From the bridge to the support post (=?) is 60.0 cm and the string is under a tension of 514 N
You are trying to slide a refrigerator across a horizontal floor. The mass of the refrigerator is 188kg, and you require to exert a force of 347N to make it just begin to move. What is the coefficient of static friction between floor and refrigera..
How to find the magnetic field
If a curve with a radius of 85 m is properly banked for a car travelling 68 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 97 km/h.
An 86 Kg person stands on a uniform ladder 4m long, that weighs 70N. The floor is rough; hence, it exerts both a normal force, and a frictional force, on ladder. The wall, on the other hand, is frictionless; it exerts only the normal force. What a..
Two gravitational forces act on a particle, in perpendicular directions. To find the net force, can we add the magnitudes of those two forces?
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