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A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far? Record your answer to the nearest whole second. No decimal places in your answer. Be careful of your units.
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Question: A skydiver has his parachute open and is floating downward through the air at a constant speed. Identify all the forces acting on the system skydiver-parachute. Check all that apply. Weight, w? Normal force, n? ...
Question: Planets beyond the solar system. On October 15, 2001, a planet was discovered orbiting around the star HD68988. Its orbital distance was measured to be 10.5 million kilometers from the center of the star, and i ...
Question: A scalloped hammerhead shark swims at a steady speed of 1.0 m/s with its 80 -cm-wide head perpendicular to the earth's 56 Â µT magnetic field. What is the magnitude of the emf induced between the two sides of t ...
Question - A stretched string has a mass per unit length of 5.00 g/cm and a tension of 10.0 N. A sinusoidal wave on this string has an amplitude of 0.12 mm and a frequency of 100 Hz and is traveling in the negative direc ...
Question: A satellite orbiting the moon very near the surface has a period of 110 min, What is free-fall acceleration on the surface of the moon? The response must be typed, single spaced, must be in times new roman font ...
Question: Part A: At what angle θ1 to the normal would the first dark ring be observed? Part B: Suppose that the light from the pinhole projects onto a screen 3 meters away. What is the radius of the first dark ring on ...
Question: A particle initially located at the origin has an acceleration of a= 2.00j m/s2 and an initial velocity of Vi = 7.00i m/s. (a) Find the vector position of the particle at any time t (where t is measured in seco ...
Question: An outfielder throws a 0.150 kg baseball at a speed of 40.0m/s at an intial angle of 30.0 with respect to the horizontal. a) what is the kinetic energy of the baseball at the highest point of its motion? b) wha ...
Question: Linear Polarization Learning Goal: To practice Problem-Solving Strategy 33.2 Linear Polarization. Unpolarized light of intensity 30 W/cm2 is incident on a linear polarizer set at the polarizing angle Î 1 = 23 â ...
Question: A roller coaster car crosses the top of a circular loop-the-loop at twice the critical speed. What is the ratio of the car's apparent weight to its true weight? The response must be typed, single spaced, must b ...
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