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Part A) Sand dunes in a desert move over time as sand is swept up the windward side to settle in the lee side. Such as "walking" dunes have been known to walk 19.3 ft in a year and can travel as much as 94.4 ft in particularly windy times. Calculate the average "walking" speed in normal times in units of m/s. Also calculate the average "walking" speed in windy times.
Part B) Fingernails grow at the rate of drifting continents, about 10.9mm per year. Approximately how long did it take for North America to seperate from Europe, a distance of about 3146mi? 1 mile is 1609 m. Answer in units of y.
what would the g-force kinetic energy and overall force a human head would absorb if they were broadside t-boned by an
At a crime scene, the forensic investigator notes that the 8.2 g lead bullet that was stopped in a door frame apparently melted completely on impact. assuming the bullet was fired at room temperature (20 C) what does the investigator calculate as the..
A 1.33kg dense mass is on the end of 4.50m "string", What Would be the period of the pendulum on earth
A barber's chair with a person in it weighs 2100N. The output plunger of a hydraulic system begins to lift the chair when the barber's foot applies a force of 55N to the input piston. Neglect any height difference between the plunger and the piston. ..
A 50kg box is placed on an inclined plane making an angle of 30 degrees with the horizontal, what is the resultant force on the box
A +19nC charge is located at the origin. What is the electric field at the position (x1,y1)=(5.0cm,0cm)? Write electric field vector in component form
If alpha particles are caused to fall through a potential difference of 1500 volts, determine their final speed if they were initially at rest. An alpha particle has mass 6.68*10^-27kg and charge of +2e. Alpha particles are Helium nuclei.
In an EM wave the electric field oscillates 4 X 10^14 HZ at in the North - South direction. In what direction is the magnetic field oscillating
A horizontal force of 100 N is applied to move a 45-kg cartacross a 9.0-m level surface. What work is done by the 100-N force
A rectangular loop of wire of dimensions 12 cm × 25 cm faces a long straight wire. The two long sides of the loop are parallel to the wire, What translational force does the straight wire exert on the loop
A 785 Hz sound wave travels through a gas. If the wavelength of the sound is 0.6 m, what is the speed of sound in the gas
A steel cable with a total length of 27.7 m and total mass of 91 kg is connected to two poles. Calculate the wavelength of the resulting wave on the cable
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