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Find the photon energies for the three longest wavelengths in the Balmer series for the hydrogen atom. (Enter your answers from smallest to largest.) Calculate the three wavelengths. (Enter your answers from smallest to largest.)
The highest barrier that a projectile can clear is 14.6 m, when the projectile is launched at an angle of 17.0° above the horizontal. What is the projectile's launch speed
an electric on a airplane operates 20.8 volts a draws a current of 14.7amps. How much energy in joules does the motor use
A converging lens and a diverging lens, separated by a distance of 20.5 cm, are used in combination. What is the focal length of the diverging lens
A standing wave on a string is produced when one end is fixed and the other is driven by a 76 Hz oscillator, what is the total length of the string in meters
A 0.93-µF capacitor is charged by a 37.0-V power supply. Find the maximum current in the resulting oscillations
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches (or 0.15 m) and a height of about 1.5 meters
A 135 mCi radioactive tracer is made in a nuclear reactor. When it is delivered to a hospital 18 hours later its activity is 85 mCi. The lowest usable level of activity is 10 mCi. What is the tracer's half-life
Sarge notices that the cable is susceptible to vibrations. He drives the rope at a frequency such that the center of the span goes through the largest amount of motion. What frequency does Sarge drive the rope at
A sound wave with intensity 20 mW/m2 interferes destructively with a sound wave that has an intensity of 4 mW/m2. What is the intensity of the superposition of the two
The statue of Isaac Newton is crated and moved from the Oxford Museum of Natural History and Science for cleaning. find the normal force between the ramp and the crate
Light with ? = 760 nm is diffracted by a single slit, and the first intensity minimum (the first dark fringe) occurs at ? =3°. What is the width of the slit
q1. a heavy piece of hanging sculpture is suspended by a 94 cm long 4.6 g steel wire. when the wind blows hard wire
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