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A thin ceramic plate is heated in a kiln, raising its temperature from 28°C to 580°C.
a) The area of the plate increases by 0.65 percent during the heating. Determine alpha for this material.
b) We cut a strip of length 16.05 centimeter at this high temperature. Determine how long will the strip be if we cool it to -100°C?
The plate in the problem above has a mass of 2.04 kilogram and a specific heat of 1200 J/kg°C.
c) Determine how much heat energy is needed to heat the plate from 28°C to 580°C?
d) The plate is located in ice to cool it down to 28°C. Evaluate the minimum amount of ice needed to do this.
A model rocket is launched from rest with an upward acceleration of 6.00 m/s^2 and, due to a strong wind, a horizontal acceleration of 1.50 m/s^2. How far is the rocket from the launch pad 6.00s later when the rocket engine runs out of fuel?
Why were the relative intensities of an element's spectral lines NOT all the same? The next corresponding hydrogen line in the Balmer series shouldbe due to the n=7 to n=2 transition. Calculate the wavelength of this line and offer an explanation ..
a person with a mass of 50 kg is standing on a scale in an elevator that is accelerating upwards at a rate of 3.2 ms2.
The amount of charge that passes through the filament of a certain lightbulb in 2.00 s is 1.67C. find the current in the lightbulb
A charged capacitor is connected to a resistor and a switch as in the figure below. The circuit has a time constant of 2.5 s. After the switch is closed, the charge on the capacitor is 90% of its initial charge.
When jumping straight down, you can be seriously injured if you land stiff-legged. In a stiff-legged landing he comes to a halt in 2.5 ms. Find the average net force that acts on him during this time
Sirius is about 9.0 light-years from Earth. How far is the trip according to you and How long would the trip take according to an Earth-based observer
A 4.25 bullet traveling horizontally with a velocity of magnitude 375 is fired into a wooden block with mass 1.10 , initially at rest on a level frictionless surface. The bullet passes by the block and emerges with its speed reduced to 110 .
A light beam strikes a piece of glass at a 72.00^\circincident angle. The beam contains two wavelengths, 450.0{\rm nm}and 700.0 {\rm nm},for which the index of refraction of the glass is 1.4820 and1.4742, respectively
A sphere of radius R and mass M is initially spinning about its center with a given angular velocity of omega. Find how far the sphere travels before it stops slipping
a compact disc undergoes 30 revolutions as it accelerates uniformly from rest to 5 revolutions per second.what is the
The engine in an imaginary sports car can provide constant power to the wheels over a range of speeds from 0 to 70 mph. determine how long would it take for the car to accelerate from 0 to 64 mph
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