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A 6500 kg helicopter accelerates upward at 0.59 m/s2 while lifting a 1210 kg car.(a) What is the lift force exerted by the air on the rotors?______________ N(b) What is the tension in the cable (ignore its mass) that connects the car to the helicopter?_________ N
A highway is to be built between two towns, one of which lies 44.0 km south and 71.0 km west of the other. at what angle would this highway be directed
q1. an electron starts from rest 75.5 cm from a fixed point charge with q -0.150 microc. how fast will the electron be
Light precedes through three polarizing sheets. Unpolarized light enters the 1st sheet and the resultant vertically polarized beam continues through the 2nd and 3rd. What percent of the original intensity emerges from filter #1
q1. the flywheel of an engine has a moment of inertia 2.80 rm kg cdot rm m 2 about its rotation axis. what is its
Three liters (3000 cm3) of oil is spilled onto a smooth lake. If the oil spreads out uniformly until it makes a circular oil slick just one molecule thick, estimate the diameter of the oil slick
A satellite of mass 5400kg orbits the Earth and has a period of 6580s, determine the magnitude of the Earth's gravitational force on the satellite
he catapult on an aircraft carrier can take an aircraft weighing 300,000 N from 0 to 84.1 m/s in 9.3 seconds, What is the acceleration of the aircraft when it launches
To get the top spinning, its string is pulled with a tension of 0.30. Explain how long does it take for the top to complete the first five revolutions? The string is long enough that it is wrapped around the top more than five turns.
Petrus takes a cold glass of cola from fridge. He puts 3 cubes of ice into it. He laeves the glass on a table in a warm room for 5 minutes. He notices that the ice cubes have become smaller. The outside of the glass is now wet. What is the reason ..
Two long, parallel wires separated by 3.00 cm carry currents in opposite directions. The current in one wire is 1.20 A, Is the force attractive or repulsive
One of the attempts to contain the spill involved pumping drilling mud into the well to balance the pressure of escaping oil against a column of fluid (drilling mud) having a density significantly higher than that of seawater and oil.
An extreme skier, starting from rest, coasts down a mountain that makes an angle 25.0° with the horizontal. How fast is she going just before she lands
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