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a 1.5 kg bass is swimming along at 2.5 m/s when it ingests a .50 kg minnow traveling in the opposite direction at 3 m/s. what is their speed just after this "interaction"?
during a violent thunderstorm hail the size of marbles diameter 0.800 cm falls at a speed of 13.0 ms. there are
a slide projector needs to create a 98-cm-high image of a 2.0 cm slide. the screen is 300 cm from the slide. what focal
A novice skier, starting from rest, slides down a frictionless 34° incline whose vertical height is 128 m. How fast is she going when she reaches the bottom.
A baseball pitcher throws a baseball with a speed of 47. Estimate the average acceleration of the ball during the throwing motion
a 15m long string of mass 1.8 kg is stretched such that the tension in the string is 25 n. a wave of frequency 20 hz is
Consider two massless springs connected in series. Spring 1 has aspring constant k_1, and spring 2 has a springconstant k_2. A constant force ofmagnitude F is being applied to theright. When the two springs are connected in this way, they form asy..
At a rock concert, a dB meter registered126dB when placed 2.8m in front of a loudspeaker on the stage. What was the power output of the speaker
two diffraction gratings a and b are located at the same distance from the observation screens. light with the same
A 70-kg ski jumper starts from rest 59 m above the ground on an icy track and flies off the track at an angle of 31°, With what speed does the skier leave the track
The polarizability of large atoms can be estimated by using the formula for the polarizability of a metal sphere, \(\alpha = 4\pi\epsilon a^{3}\), Estimate the induced dipole moment of an oxygen atom
The current in a 100 watt lightbulb is 0.900A . The filament inside the bulb is 0.120mm in diameter. What is the electron current in the filament
A mass is stretched 4 centimeters from the equilibrium position of a spring. If the displacement is doubled, what can be concluded about the restoring force? A. It is halved. B. It is doubled. C. It stays the same. D. It is increased by 4. E. It i..
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