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A skydiver jumps out of a helicopter and falls freely for 6.4 s before opening the parachute.
(a) What is the skydiver's downward velocity when the parachute opens?
(b) How far below the helicopter is the skydiver when the parachute opens?
A spherical shell is formed by taking a solid sphere of radius 25.0cm and hollowing out a spherical section from the shell's interior. What is the ratio of the outer area to the inner area of the shell
A detector placed perpendicular to a streaming sound wave has an active area of 10.0 cm2 and recoreds energy incident at at rate of 25.0 uJ/s. What is the intensity of the wave?
An airplane takes off at sea level and climbs to a height of 480 m. Estimate the net outward force on a passenger's eardrum assuming the density of air is approximately constant
Two cars of equal mass collide at right angles to each other in an intersection. Which car had the greater velocity before the collision
A spacecraft traveling out of the solar system at a speed of .9c sends back information at a rate of 300 Hz. At what rate do we receive this information
If the rod is being pulled at a constant velocity of 37 cm/s, and there is a uniform magnetic field coming up through the rails vertically of strength 1.5T, what current is induced in the loop formed by the rod, the rails and the resistor? What di..
53.3-cm-long uniformly charged rod is sealed in a container. the total electric flux leaving the container is
A 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. Calculate the image position
A telescope has an objective with a refractive power of 1.35 diopters, What is the angular magnification of the telescope
A physicist visits a wealthy friend (marketing major) who has aswimming pool. The physicist (a theoretician) accidentally spills afew drops of suntan lotion and a thin oil film (n =1.23) spreads over the water.
Calculate the classical momentum of a neutron traveling at 0.997c, neglecting relativistic effects
An insulated thermos contains 138.0 cm3 of hot coffee at a temperature of 80.0 °C. You put in 11.0 g of ice cube at its melting point to cool the coffee. What is the temperature of the coffee once the ice has melted and the system is in thermal eq..
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