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You (mass 55 kg) are riding your frictionless skateboard (mass 5.0 kg) in a straight line at a speed of 4.7m/s when a friend standing on a balcony above you drops a 2.7kg sack of flour straight down into your arms.
A. What is your new speed, while holding the flour sack?
Two particles of mass m1= 2.6 kg and mass m2 = 4.8 kg that are free to move on a horizontal track are initially held at rest so that they compress a spring, Find the final velocities of the two particles
A regulation soccer field for international play is a rectangle with a length between 90.0m and 111mand a width between 57.0m and 70.0m
A football coach in hopes of improving his kicker's performance fills a .9 kg football with helium rather than air. what change in relative weight of the football (change in weight divided by weight) is to be expected
A circuit containing a 4.5 H inductor has an alternating current supplied to it. If Irms is 6.9 A and Vp is 61 V, find the frequency of the signal
A person with mass m1 = 60 kg stands at the left end of a uniform beam with mass m2 = 91 kg and a length L = 3.2 m, What is the location of the center of mass of the system
A copper container of mass 0.300kg contains 2.0 kg of lemonade at 33degree Celsius. What is the final temperature of the lemonade
A girl jumps on bike and exerts torque of 25.0 N-m perpendicular to the pedal. Moment of inertia of bike wheel is I = 0.045kg-m^2. What is angular velocity of bike wheel at end of this time
An observer in frame S standing at the origin observes two flashes of colored light separated spatially by ?x = 2980 m, Find the magnitude and direction of v.
If the current in the solenoid is ramped at a constant rate from zero to Is= 1.20 A over a time interval of 79.0 ms, What is the mutual inductance between the solenoid and the short coil
A helium-neon laser of the type often found in physics laboratories has a beam power of 4.00 mW at a wavelength of 633 nm. Calculate the force exerted on this sphere
In response to a stimulus, membrane can become permeable to Na ions. As Na ions rush into the cell, the interior of the cell reaches an electric potential of about 40 rm mV.
The output piston of a hydraulic press has a cross-sectional area of 0.20 cm2. What force is applied to the input piston if that piston has a diameter of 5.0 cm
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