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A tungsten wire, initially at room temperature (20.0°C) with a resistance between its ends of 44 Ω, is placed in an oven. What will the temperature of the wire be when the resistance is 110 Ω? The temperature coefficient of resistivity of tungsten is 0.0050°C-1 at 20.0°C.
If the spring constant k = 5.0\times 10^2 \rm \;{N/m}, the baby has a mass m = 11\;{\rm kg}, and the baby's legs reach a distance d = 0.15\; \rm m from the bouncer, what should be the height h of the "empty" bouncer above the floor?
what is the net effect of aerosols on climate? answer must be 400-500 words and fully
a lunar lander is making its descent to a moon base and descends slowly under the retro-thrust of its descent engine.
A 900 kg car can accelerate from rest to90 km/h in 7.4 s. What is the average power delivered by the engine
A potential energy function for a two-dimensional force is of the form U = 3.89x3 y - 5.96x. Calculate the force that acts at the point (1.28m,1.17m). Enter the x-component first and then the y-component.
A two-turn circular wire coil of radius 0.430 m lies in a plane perpendicular to a uniform magnetic field of magnitude 0.500 T. what is the average induced emf in the wire during this time
An 80.0-O resistor, a 200-mH inductor, and a 0.150-µF capacitor are connected in parallel across a 120-V (rms) source operating at 374 rad/s.
A man walks 3 miles east in 1 hour at a constant velocity, then walks two miles east at a constant velocity in 20 minutes, then two miles east at a constant velocity in 40 minutes, then rests for one hour and then turns around and walks eight miles w..
Sound with a frequency 700 Hz from a distant source passes through a doorway 1.07 m wide in a sound-absorbing wall. Find the number of the diffraction minima at listening positions along a line parallel to the wall
A certain resistor has a resistance of 1.484 ohms at 20.0 degrees celsius and a resistance of 1.512 ohms at 34.0 degrees celsius. What is its temperature of resistivity
Water is pumped from a lower reservoir to a higher reservoir with a pump that draws 20 kW of electrical power. The free surface of the upper reservoir is 45 m higher than that of the lower reservoir. If the flow rate of water is gauged to be 0.03 m^3..
You (mass 80 kg) and your friend (mass unknown) are in a rowboard (mass 60 kg) on a calm lake. What is your frriend's mass
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