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A soccer player kicks the ball toward a goal that is 27.0 m in front of him. The ball leaves his foot at a speed of 15.7 m/s and an angle of 36.0 ° above the ground. Find the speed of the ball when the goalie catches it in front of the net.
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. What is the distance d from image to screen
The clarinet is well modeled as a cylindrical pipe that is open at one end and closed at the other. Find the wavelength and frequency of the third normal mode of vibration
What is the speed of crate hit ground
An object is placed 23.3 cm to the left of a thin converging lens that has focal length +11.3 cm. What is the distance between the object and the image
an object is thrown upward to a person of a roof . at what point is the objects kinetic energy at its max? at what point is the potential energy of the system at a max
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 150 cm, Find the magnitude and direction of the second displacement
A small glass bead has been charged to +30.0nC. A metal ball bearing 1.30cm above the bead feels a 1.90×10?2N downward electric force. What is the charge on the ball bearing?
A fun-loving 11.4 {rm kg} otter slides up a hill and then back down to the same place. If she starts up at 5.75 {rm m/s} and returns at 3.75 {rm m/s}, how much mechanical energy did she lose on the hill.
For 140 keV gamma rays, the mass attenuation coefficients for hydrogen and oxygen are 0.26 and 0.14 cm^2/g, respectively. What is the mean free path in water at this energy
You have a 0.421-kg sample of gas containing 1.99 moles. Calculate the rms, average, and most probable speeds of the gas\'s molecules
The displacement of a particle moving under uniform acceleration is some function of elapsed time and acceleration. Suppose we write this displacement as: s=ka^mt^n where k is the dimensionless constant.
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