What was the initial speed of the arrow
An archer shoots an arrow horizontally at a target 17 m away. The arrow is aimed directly at the center of the target, but it hits 56 cm lower. What was the initial speed of the arrow?
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A particular guitar string is supposed to vibrate at 191 Hz, but it is measured to actually vibrate at 210 Hz. By what percent should the tension in the string be changed to get the frequency to the correct value? (Your answer should be positive f
Following the procedure in the video, create three traces of the pendulum motion of the cup. Compare the three traces for amplitude, wavelength, and frequency.
A ball is thrown at 45 degrees with an initial velocity of 96.6 km/hr from a car traveling at 73 km/hr. What is the ball's initial velocity with relative to the earth?
A hot wheels track has a spring loaded launcher. A 100g car is pushed into the launcher, which compresses the spring by 2cm. what are the energy conversions from beginning to the end of the track.
What is the angular frequency of electrical oscillations in an L-C circuit?
What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Treat the ships as particles.
Water flows at 0.56 m/s through a pipe 18 cm in diameter when the pressure is 360,000 Pa. Determine the water velocity & the pressure in the pipe be if it shrinks down to 6 cm in diameter. You can assume that the pipe is horizontal & ρ
The electric potential in a certain region of space is given by V = -7.5x2 + 3x, where V is in volts and x is in meters. In this region the equipotential surfaces are
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