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During a workout, the football players at State U ran up thestadium stairs in 60 s. The stairs are150 m long and inclined at an angle of30°. If a typical player has a mass of 105 kg, estimate the average power output on the way up. Ignore friction and air resistance.
Two waves are traveling in the same direction along a stretched string. The waves are 45.0° out of phase. Each wave has an amplitude of 7.00 cm. Find the amplitude of the resultant wave
a current of 18.20 ma is maintained in a single circular loop with a circumference of 3.31m. a magnetic field of
question an instructor uses light of wavelength 633 nm to create a diffraction pattern with a slit of width 0.117mm.
Two parallel plate capacitors have circular plates. The magnitudeof the charge on these plates is the same. However, the electric field between the plates of the firstcapacitor is 10 times larger than the electric field of the second capacitor
An 24 g rifle bullet traveling 370 m/s buries itself in a 4.8 kg pendulum hanging on a 2.6 m long string, which makes the pendulum swing upward in an arc. find the maximum vertical displacement of the pendulum.
A solution has a hydronium-ion concentration of 1.0 x 10-5 mol per liter. What is the hydroxide-ion concentration of this solution
A radar has a resolving power of 30 m at a range of 1.0km. What is the minimum width of its antenna if its operating frequencyis 9500 MHz
Suppose 1.00kg of water at 100 degrees Celsius is mixed with 1.00kg of water at 0 degrees Celsius. What is the total charge in entropy of the mixture
A 7.00 \mu F, parallel-plate, air capacitor has a plate separation of 4.50 mm and is charged to a potential difference of 400 V
A high-energy pulsed laser emits a 1.2-ns-longpulse of average power 1.7×1011W. Determine the rms value of the electric field
a 2.00kg projectile is launched from the earths surface with an initial velocity of 38ms at an angle of 45 degrees with
with what minimum speed must you toss a 150 ball straight up to just touch the 14--high roof of the gymnasium if you
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