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A bird is initially flying horizontally east at 21.1 m/s, but one second later it has changed direction therefore that it is flying horizontally and 7 north of east, at the same speed. Find the magnitude and direction of its acceleration vector during that one second time interval? (Suppose its acceleration was approximately constant.)
In deep space, sphere A of mass 120 kg is located at the origin of an x axis and sphere B of mass 130 kgis located on the axis at x = 5.8 m. Sphere B is released from rest while sphere A is held at the origin. What is the gravitational potential ener..
The water molecule H2O, with a permanent dipole moment of magnitude 6.2*10^-30 Cm, What force does the ion exert on the water molecule
A sphere of aluminum 11.3 cm in diameter is suspended in oil (density = 1 grams/cm3). Find the tension in the supporting string in Newtons
A guitar string is 92 cm long and has a mass of 3.8 g. From the bridge to the support post (= L) is 63 cm, What are the frequencies of the fundamental and first two overtones
a physics professor claims in court that the reason he went through the red light lambda 660 nm was that due to his
A three-legged wooden bar stool made out of solid Douglas firhas legs that are 2.5 cm in diameter. When a 70 kg man sits on thestool, by what percent does the length of the legs decrease?
A transparent oil with index of refraction 1.20 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
In a certain cyclotron a proton moves in a circle of radius0.600 m. The magnitude of the magneticfield is 1.10 T. What is the kinetic energy of the proton
An athlete catches a ball traveling at 20 m/s with her hands. Between the time she makes contact with the ball and the time the ball stops moving, What is the mass in kg of the ball
A possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. how thick would you make the coating
A sphere with radius 0.15m has density p that decreases with distance r from the center of the sphere according to p= 2.75*10^3 kg/m^3 - (9.5*10^3kg/m^4)r
An experiment is performed in deep space with two uniform spheres, one with mass 22.0 kg and the other with mass 108.0 kg. Find the magnitude of the relative velocity with which one sphere is approaching to the other
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