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Question1
An airplane with a speed of 79 m/s is climbing upward at an angle of 48° counter clockwise from the positive x axis. While the plane's altitude is 540 m the pilot releases a package.
(a) Analyse distance along the ground, measured from a point directly beneath the point of release, to where the package hits the earth.
(b) Find out an angle of the velocity vector of the package just before impact.
Question2
A shower stall has dimensions 86.0 cm 86.0 cm 210 cm. suppose the stall acts as a pipe closed at both ends, with nodes at opposite sides. Imagine singing voices range from 130 Hz to 2 000 Hz and let speed of sound in the hot air be 355 m/s. For someone singing in this shower, which frequencies would sound the richest (since of resonance)? For L = 0.860 m
Your motorboat can move at 30km/h in still water. How much time would it take you to move 12km upstream, in a river flowing at 6km/h.
A long straight wire carries a current of 6.2 A. The wire is horizontal in the plane of the page (screen), Calculate the force that acts on the electron
A uniform solid sphere of mass 1.5 kg and diameter 30.0 cm starts from rest, What is the speed of the center of mass of the sphere when it reaches the bottom of the incline
A car travels along a U-shaped curve for a distance of 400 m in 30 s. What is the magnitude of the average velocity
The He-Ne laser shines through a slit in the diffraction plate that is 50 cm from the screen. What fringe spacing would you expect for slits E and F if the stated slit spacing is correct? What difference must there be between the patters produced ..
Three resistors, 2.57ohm, 2.51ohm, and 4.45ohm, are connected in series across a 24.4-V battery
An artillery shell is fired with an initial velocity of 300 m/s at 47.5° above the horizontal. To clear an avalanche, it explodes on a mountainside 47 s after firing. What is the x and y components of the shell where it explodes, relative to its f..
you are given a 5-loop standing wave. The velocity of the wave of the string is v= 10 m/s. What is the frequency of the wave on the string
Ten days after it was launched toward Mars in December 1998, find the potential energy of the earth-spacecraft system
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.75 × 106 V, what are the radius of its circular path
A proton, an electron, and an alpha particle (of charge +2e) form an equilateral triangle of side length 2.19×10-10 m. What is the electric potential energy of the three-particle system
Bill measures the rate at which the clock in Sam's spaceship runs and finds that it is one-third the rate at which the same clock runs when it is at rest
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