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If a lab student determines the coeffient of linear expansion of aluminum is 26.4 x 10-6, what is that student's percent error for the experiment?
A 40.6 kg keg of beer rolls down a 3.40 m long plank leading from the flatbed of a truck 0.880 m above the ground
A 380 kg piano slides 3.9 m down a 27 incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. Determine the work done by the man on the piano
When a certain spring is stretched by an amount x, it produces a restoring force of F(x) = ax=bx^2, where a and b are constants. How much work is done through an external force in stretching the spring by an amount D from its equilibrium length.
A microscope has a 12.0 x eyepiece and a 59.0 objective lens 20.0 cm apart. Calculate (a) the total magnification, (b) the focal length of each lens, and (c) where the object must be for a normal relaxed eye to see it in focus?
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. During the process, What is the tire pressure in pascals
A mass of 0.8kg is located at the end of a very light and rigid rod 50 cm in length. What is the rotational inertia of the system
A .32 caliber bullet fired from a revolver with a 3 in long barrel will have a relatively low muzzle speed of about 200 m/s. how long will whole trip take
A petite young woman distributes her 550{\rm N} weight equally over the heels of her high-heeled shoes. Each heel has an area of 0.650{\rm cm^2}. What pressure is exerted on the floor by each heel
A sphere of radius 3.09 cm and a spherical shell of radius 9.22 cm are rolling without slipping along the same floor. what should the ratio of the sphere\'s angular speed to the spherical shell\'s angular speed be
In heavy rush-hour traffic you drive in a straight line at 12 m/s for 1.5 minutes, then you have to stop for 3.5 minutes, and finally you drive at 15 m/s for another 2.5 minutes. compute the average velocity between t=0 and t=7.5 minutes.
The current in a 100 watt lightbulb is 0.900 A . The filament inside the bulb is 0.280 mm in diameter. What is the current density in the filament
An airfoil in a test chamber is exposed to air. Well ahead of the airfoil the pressure, temperature, and density are standard sea level conditions. Determine the velocity of the airflow
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