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A swimmer climbs onto an 11.6-kg Styrofoam float (density 158 kg/m3). The top of the float ends up just at the water surface. What's the swimmer's mass?
If the radius of Earth decreased, with no change in mass, your weight would......?
Two masses m1 and m2 are connected by an ideal spring and placedon a horizontal frictionless surface as shown. they are pulledapart so that the spring is stretched an amount x0 and then theyare released simultaneously. the constant for the spring ..
A simple harmonic oscillator consists of a block of mass 2.00 kg attached to a spring of spring constant 110 N/m. What is the amplitude of the oscillations
a convex mirror has a focal length of magnitude 1.92cm.a if the image is virtual what is the object location for which
Soft drinks are commonly sold in aluminium containers. How a lot of such containers are thrown away or recycled each year by U.S. consumers.
A proton is located at a distance of 0.435 m from a point charge of +8.46 μC. The repulsive electric force moves the proton until it is at a distance of 1.80 m from the charge. Assume that the electric potential energy lost with the system is carried..
A two-stage rocket moves in space at a constant velocity of +4300 m/s. The two stages are then separated by a small explosive charge placed between them. Immediately after the explosion the velocity of the 1130-kg upper stage is +5810 m/s. What is..
when light of wavelength 450 nm is shone on potassium photoelectrons with stopping potential of 0.52 v are emitted. if
The electric potential at x = 3.0 m is 120 V, and the electric potential at x = 5.0 m is 190 V. What is the electric field in this region, assuming it's constant? -140 N/C 140 N/C -35 N/C 35 N/C 75 N/C.
If the average rate of energy consumed by the house was instead diverted to lift a 2130 kg car 12.3 m into the air, how long would it take
A discus thrower (with arm length of 1.2 m) starts from rest and begins to rotate counterclockwise with an angular acceleration of 2.4 rad/s2. What is the tangential acceleration of the discus thrower at this point
A 52dB sound wave strikes an eardrum whose area is 5.0×10?5m^2 . a)How much energy is received by the eardrum per second? b)At this rate, how long would it take your eardrum to receive a total energy of 7.0J?
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