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Two skaters, a man and a woman, are standing on ice. Neglect any friction between the skate blades and the ice. The mass of the man is 89 kg, and the mass of the woman is 66 kg. The woman pushes on the man with a force of 55 N due east. Determine the acceleration (magnitude and direction) of (a) the man and (b) the woman.
four equal positive point charges each of charge -14 c are at the corners of a square of side 12cm.what charge should
A proton and an electron have the same wavelength. Which particle is moving faster and which possesses more kinetic energy
A uniform solid disk with a mass of 23.8 kg and a radius of 0.712 m is free to rotate about a frictionless axle. Forces of 92.0 and 124 N are applied to the disk. Taking the clockwise direction to be the negative direction, what is (a) net torque pro..
the italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm. 7. bob bought a
a dog running in an open field has components of velocity 3.2 and -1.6 at time 10.4 . for the time interval from
What mass of water at 29.0°C added to a Styrofoam cup containing two 60.0 g ice cubes from a freezer at -16.0°C will result in a final temperature of 5.00°C for the drink? Explain it.
You have been given 2.2019195 g of copper from which you are to fashion a wire whose resistance is 1.7423174 ohms. What will the diameter of the wire be that you fashion
gravity fed intravenous infusions are made possible by hanging a bag of fluid above the patient. if blood pressure is
In a student experiment, a constant-volume gas thermometer is calibrated in liquid nitrogen (?196°C ) and in boiling allyl alcohol (97°C). What pressure would be found at the boiling point of water
Earth's Atmosphere It is found experimentally that the electric field in a certain region of Earth's atmosphere is directed vertically down. At an altitude of 270 m the field has magnitude 60.0 N/C; at an altitudeof 170 m, the magnitude is 100 N/C..
Of the charge Q initially on a tiny sphere, a portion q is to be transferred to a second, For what value of q/Q>0.5 will the electrostatic force between the two parts have 1/2 of the maximum possible value
A system consists of two particles. At = 0 one particle is at the origin; the other, which has a mass of 0.50 , is on the -axis at = 6.0. At = 0 the center of mass of the system is on the -axis at = 2.4. The velocity of the center of mass is given..
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