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A tennis ball is hit horizontally with a speed of 4.8 m/s off of a roof top 25m above the ground. a) How long does it take for the ball to hit the ground? b) How far away does the ball land on the ground? (Be sure to include units.)
question a simple harmonic oscillator takes 3.0 seconds to undergo 30 complete vibrations. find the frequency in hz
A 1.5 kg copper block is given an initial speed of 3 m/s on a rough horizontal surface. Because of friction, the block finally comes to test. If the block absorbs 85% of its kinetic energy, calculate its increase in temperature.
Identical cellos are being tested. One is producing a fundamental frequency of 290 Hz on a string that is 1.03 m long and has a mass of 100.0 g. On the second cello the same string is fingered to reduce the length that can vibrate. If the beat fre..
a ball moving with speed v collides with a horizontal smooth surface at an angle ? with normal to surface. if
The ionization energy for the outermost electron in a sodium atom is 5.1 eV. Use the Bohr model with Z= Zeffective to calculate a value for Z effective.
Macaroni and cheese packages specify how long to cook the pasta in boiling water. Calculate the concept relating temperature and pressure in cooking of food.
A weight lifter lifts a 420 N set of weights from ground level to a position over his head, a vertical distance of 1.70 m. How much work does the weight lifter do, assuming he moves the weights at constant speed?
Green light at 532 nm lights a diffraction grating with 800 lines per cm. Diffraction pattern is on screen 7.5m away. Calculate distance between the diffraction peaks on the screen
A motorcycle and a police car are moving toward one another. The police car emits sound with a frequency of 574 Hz and has a speedof 24.0 m/s. What frequency does the motorcyclist hear
A 64 Ω resistor, an 7.4 uF capacitor, and a 38 mH inductor are connected in series in an ac circuit. Find the impedance for a source frequency of 300 Hertz
An undamped 1.42-kg horizontal spring oscillator has a spring constant of 29.9 N/m. While oscillating, it is found to have a speed of 2.53 m/s as it passes through its equilibrium positio
An AC generator supplies an rms voltage of 230 V at 50.0 Hz. It is connected in series with a 0.650 H inductor, a 6.00 ?F capacitor, What is the peak voltage across the inductor
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