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An aluminum-alloy rod has a length of 10.008 cm at 16.400°C and a length of 10.020 cm at the boiling point of water.
(a) What is the length of the rod at the freezing point of water? (Answer to the nearest 0.001 cm.)
(b) What is the temperature if the length of the rod is 10.017 cm? Please show all work.
Oxygen has a molar mass of 32.0g/mol. What is the root-mean-square speed of an oxygen molecule at a temperature of 298K
A 38.0 kg wheel, essentially a thin hoop with radius 2.40 m, is rotating at 460 rev/min. It must be brought to a stop in 23.0 s. (a) How much work must be done to stop it? (b) What is the required average power? Give absolute values for both parts.
The position of an object as a function of time is (3.2t + 1.8t^2)i + (1.7t + 2.4t^2) , where is the time in seconds. Find the magnitude and direction of the object.
A 650kg elevator starts from rest and moves upwards for 3sec with aconstant acceleration until it reaches a cruising speed of1.75m/s. What is the average power of elevator motor duringthis period
A dipole is located at the origin, with charges +3 nC and -3 nCseparated by 4 μm. Consider a spherical Gaussian surfacecentered on the origin of radius 80 μm.
An early .75 caliber rifle fires a 12 gram spherical ball at 800 ft/sec with a spin of 1 revolution per 114 mm. How much energy is in the rifle ball
A 9.0 kg cylinder rolls withoutslipping on a rough surface. At an instant when its center ofgravity has a speed of 8.0 m/s. Determine its total kinetic energy
In shot putting, many athletes elect to launch the shot at an angle that is smaller than the theoretical one (about 42 degrees) at which the distance of a projected ball at the same speed and height is greatest.
The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
A parallel plate capacitor has a potential difference between the plates of 80 V. If the charge on one of the plates of the capacitor is +8.0 ?C, what is the electrical energy stored by this capacitor
Two resistors A and B are connected in series to a 9.0 V battery; the voltage across resistor A is 6.0 V. What are the resistances of A and B
A wire is formed into a circle having a diameter of 10.6 cm and is placed in a uniform magnetic field of 2.73mT. Find the maximum torque on the wire
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