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An object hanging in air, as in Figure A below, caused the scale to balance at 0.420 kg. When the object was submerged in water, as in Figure B, the scale balanced at 0.22 kg. The density of water is equal to 1000 kg/m3. The density of air is so small that it can be ignored.
what is the volume of the object?
what is the density of the object?
A 80 pF capacitor is charged to a potential difference of 140 V, and the charging battery is disconnected. what is the capacitance of this second capacitor
A moth at about eye level is 5.9 cm in front of a plane mirror; you are behind the moth, 17.8 cm from the mirror. At what distance must you focus your eyes to see the image of the moth in the mirror, that is, what is the distance between your eyes..
A student throws a water balloon vertically downward from the top of a building, What is the magnitude of its velocity after falling 10.1m and What is its speed after falling for 2.20s
A generator has a square coil consisting of 356 turns. The coil rotates at 91.5 rad/s in a 0.211-T magnetic field. What is the length of one side of the coil
One thousand kilocalories of heat are added to three moles of a monatomic ideal gas as it expands, What was the temperature change for this gas
The transverse displacement (y) of a wave is given as a function of position (x in meters) and time (t in seconds) by the expression to the right. Determine the wavelength, frequency, period, and phase constant of this waveform.
A parachutist descending at a speed of 10.0 m/s loses a shoe at an altitude of 30.0 m. (Assume the positive direction is upward.). Explain when does the shoe reach the ground? What is the velocity of the shoe just before it hits the ground?
What, in your opinion after reading the chapter, constitutes "abnormal" behavior. How would you qualify what is outside of the "norm"
How much work is completed by the system in this process. Determine the increase in entropy produced by the parachutist; assume the air temperature is 21 degrees C. How much work is completed by the system in this process.
If the police car accelerates uniformly at 3.00m/s^2 and overtakes the speeder after accelerating for 9.00 s, illustrate what was the speeder's speed?
A jumper in the long-jump goes into the jump with a speed of 12 m/s at an angle of 20 deg. above the horizontal
What friction torque is required to reduce angular speed
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