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A Nichrome wire is used as a heating element in a toaster. From the moment the toaster is first turned on to the moment the wire reaches it maximum temperature, the current in the wire drops by 20% from its initial value. What is the temperature change in the wire? The temperature coefficient for Nichrome is á = 0.0004 (°C)-1.
a typical maximum acceleration for a car is about 8 m/s^2, A sports car traveling at 20m/s accelerates at this rate for 1.25 seconds
explain force with the sensor report. what is the charge of the larger sphere.
What speed would Michelson have computed for Earth's motion through the ether had the experiment seen a shift of one fringe
When you take a bath, how many kg of hot water (49 oC) must you mix with cold water (13 C) so that the temperature of the bath is 36 oC? The total mass of the water (hot and cold) is 191-kg.
A potter's wheel is rotating around a vertical axis through its center at a frequency of 2.0rev/s. What is the frequency of the wheel after the clay sticks to it? Ignore friction
question1a hiker makes four straight-line walks a 20 km at 274o b 12km at 48onbspc 33 km at 150onbspd 30km at 20onbspin
compare the electric force holding the electron in orbit (r=0.53*10^-10m) around the proton nucleus of the hydrogen atom, What is the ratio of these two forces
Its thermal conductivity is 7.50×10?2W/(m?K) ; If the temperature difference between opposite faces is 84.5?C, how much heat flows through the slab in 1 day
suppose a random sample of 49 is selected from a population with a standard deviation of 14. if the sample mean is 125
What is average kinetic energy of each helium atom
three forces when added produce a resultant force that is 100N pointing 63° above the positive x-axis. what are the magnitude and direction of the third force
A wire is attached to a ceiling and a brass ball. The tension on the wire is T=120N. What is the new weight of the ball
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