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A 75kg astronaut is holding a 5kg ball while in deepspace. He wants to use the ball to travel backwards towards his ship by throwing the ball foward. He estimates that he can throw the ball with velocity 20m/s. What velocity will he acquire? and how long will it take him if his ship is 20m away?
A circuit consists of a .15 microF capacitor, a 600 ohms resistor, and a 70mH inductor in series. Calculate the rms current flow
question forces with magnitude of 125 newtons and 300 newtons act on a hook. the angle between the two forces is 45
A circuit consists of a 259- resistor and a 0.260-H inductor. Determine the phase angle between the current and the voltage of the generator. Note: The ac current and voltage are rms values and power is an average value unless indicated otherwise
A child is riding a merry-go-round, which has an instantaneous angular speed of 1.25 rad/s and an angular acceleration of 0.745 rad/s2. What angle does the acceleration of the child make with the tangential direction
Assuming that air resistance exerts a 95 N force on the person during the fall, identify the person's velocity just before hitting the net.
The inside of the cylindrical can shown above has cross-sectional area 0.005 m^2 and length 0.15 m. The can is filled with an ideal gas and covered with the loose cap. The gas is heated to 363K and some is allowed to escape from the can so that re..
in the park powerful magnets accelerate a car and its riders from rest to 45msabout 100mih at a time of 7.0s. the
1 salt crystals will form saltwater as the water evaporates. a salt crystals is much more ordered than salt dissolved
You have a sample of Xenon in a rectangular container. The gas exerts a total force of 3.37 N perpendicular to one of the container walls, Calculate the pressure of your sample
The 40 kg wheel of an airplane flying at 248 m/s at an altitude of 7400 m falls off during a flight. If the wheel hits the ground at 377 m/s, how much work was done on the wheel by air resistance
You have carefully prepared the wave function of an electron to be in the first energy eigenstate of an infinite potential well spanning a length a. Now you decide to release the electron from the prison by turning off the infinite potential barri..
According to the law of universal gravitation, what will happen to Earth if the Sun were somehow replaced by the black hole of same mass.
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