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Superwoman is hovering above the ground when a parachutist in free-fall goes by her at terminal velocity of 140km/h. the parachute does not open and it takes Superwoman 1.9 s to realize the person is in trouble, and then from a height of 1000 m she must catch the parachutist before they hit the ground. What must her minimum acceleration be to catch the parachutist right at the ground?
Transform the given sinusoids into phasor form and draw a phasor diagram. Use the additive property of phasors to find v1(t) + v2(t).
A very early, simple satellite consisted of an inflated spherical aluminum balloon 30 m in diameter and of mass 20 kg. What is the gravitational force on the meteor from the satellite at the closest approach
Suppose it was launched form a launch pad in a space vacuum. Would it work? Illustrate what changes would we observe? Explain
A professional boxer hits his opponent with a 1000 N (225 lb) horizontal blow that lasts for 0.15 s. Calculate the impulse imparted by his blow
Two boat landings are 1.0 km apart on the same bank of a stream that flows at 1.8 km/h. What is the speed of the boat relative to the water
You are looking straight down on a magnetic compass that is lying flat on a table. A wire is stretched horizontally under the table, parallel to and a short distance below the compass needle.
A truck with a mass of 14000 kg is pushed with a force of 9200 N. If the frictional force is 2150 N, What is the truck's acceleration
What is the magnitude of the external force essential to hold a 2 kg cart motionless at the top of a 2m high incline which is 30 degrees.
A glass optical fiber (n= 1.50) is submerged inwater(n=1.33). What is the critical angle for light to stay inside the fiber
You are to build a box whose height is 0.280 times its length. what should be the ratio of the width of the box to its length
A solid sphere of weight 8.00 lb rolls up an incline with aninclination angle of 30.0 degrees. How far does the sphere travel up the incline
A race car starts from rest on a circular track of radius 690 meter. The car's speed increases at the constant rate of 0.400 m/s2, estimate the elapsed time
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