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A 15000-kg vehicle travels at a constant speed of 22 m/s around a circular track that has a radius of 85 m.Determine the magnitude of the net force that acts on the vehicle
A skier of mass 111 kg travels down a frictionless ski trail. what is the work done by gravity on the skier
three building materials plasterboard k 0.30 js m co brick k 0.60 js m co and wood k 0.10 js m co are sandwiched
Through a particular process, the pressure of the gas in a heat engine increases from 1.62×105 Pa to 2.64×105 Pa, while the volume decreases from 3.34×102 m3 to 2.74×102 m3. The pressure-volume graph is a straight line.
Two slits separated by 0.0520 mm and located 1.80 m from a viewing screen are illuminated by monochromatic light. The third-order bright fringe is 5.50 cm from the zeroth-order bright fringe.
Assuming the truck continues at constant speed from this minimum distance, for how long must the light remain yellow for the truck to completely clear the intersection before the light turns red.
A gas expands from I to F. The energy added to the gas by heat is 423 J when the gas goes from I to F along the diagonal path.
A particle of mass 7.22 x 10^-27 kg, moving at 7.06 x 10^5 m/s, strike an identical particle which is initially at rest. What are the final speeds of the particles
A tennis player swings her 1000 g racket with a speed of 12 m/s. She hits a 60 g tennis ball that was approaching her at a speed of 24 m/s. How fast is her racket moving immediately after the impact
A parallel-plate capacitor with circular plates of radius R is being charged. The change of electric field is given by dE/dt=1.5E12 V/(mS). The field magnitude B for r=5R is 1E-7 T.
A model of a helicopter rotor has four blades, each of length 3.30 m from the central shaft to the blade tip. The model is rotated in a wind tunnel at a rotational speed of 510 rev/min. What is the linear speed of the blade tip?
The temperature of a black body is increased by 10.5 percents. By how many percents did the wavelength of the peak change
A pop bottle style instrument is played being open at one end closed at the other, if two successive frequencies, 350 Hz and 490 Hz, are produced, what is the fundamental frequency,
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