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Concept Simulation 7.1 illustrates the physicsprinciples in this problem. An astronaut in his space suit and witha propulsion unit (empty of its gas propellant) strapped to hisback has a mass of 147 kg. During a space-walk, the unit, which hasbeen filled with propellant gas, ejects some gas with a velocity of+31.0 m/s. As a result, the astronaut recoils with a velocity of-0.247 m/s. After the gas is ejected, the mass of the astronaut(now wearing a partially empty propulsion unit) is 163 kg. What percentage of the gas propellant in the completely filledpropulsion unit was depleted?
A diverging lens has a focal length of 40.7 cm. If an object is 31 cm from the lens, what is the image distance? Answer in units of cm. Also, What is the magnitude of the magnification for this lens?
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 32000 V. find the electron speed just before the electron strikes the screen
A spherical Balloon is inflated at the rate of 144pie cubic inches per minute (in^3/min). How fast is the radius of the balloon changing when the radius is 4 inches? Recall the formula for volume of sphere: V(4/3) pieR^3?
A vertical straight wire carrying an upward 30?Acurrent exerts an attractive force per unit length of 5.5×10?4N/m, What current (magnitude) flows in the second wire
an electric field of 12.4 nc directed due north is superposed on an existing electric field of 16.5 nc directed due
a circuit consists of an ideal ac generator a 25nbspmicrof capacitor and an 65?nbspresistor all connected in series.
A 62 N force acts at 30 degrees and a second 62 N force acts at 60 degrees. What is the magnitude and direction of the force that produces equilibrium
A 2.9cm --diameter parallel-plate capacitor has a 1.6mm spacing. The electric field strength inside the capacitor is 8.0×104 V/m. How much charge is on each plate
A 50.8 kg box is resting on ahorizontal floor. A force of 250 N directed at an angle of32.6° below the horizontal isapplied to the box. What is the force of friction on the box
for n2 at 25oc and 1.00 atm calculate the number of collisions per second made by one molecule the number of collisions
A small glass bead has been charged to 60.0 . A metal ball bearing 2.70 above the bead feels a 1.50×10?2 downward electric force. What is the charge on the ball bearing
A lead fishing weight with a mass of 57.0g absorbs 146cal of heat. If its primary temperature is 50 C, what is its final temperature.
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