Thursday
October 2, 2014

Posts by wendlen


Total # Posts: 7

physics
Consider three charges q1 = 6.0 µC, q2 = 1.8 µC, and q3 = -2.8 µC, arranged as shown below. Q1 is positive and is 3 cm away from Q2. Q2 is also positive and is 2 cm away from Q3 which is negative. (a) What is the electric field at a point 1.0 cm to the left ...
April 23, 2013

physics
Three point charges lie in a straight line along the y-axis. A charge of q1 = -9.20 µC is at y = 6.60 m, and a charge of q2 = -8.00 µC is at y = -3.90 m. The net electric force on the third point charge is zero. Where is this charge located?
April 23, 2013

physics
A 5.9 g coin sliding to the right at 23.4 cm/s makes an elastic head-on collision with a 17.7 g coin that is initially at rest. After the collision, the 5.9 g coin moves to the left at 11.7 cm/s.Find the amount of kinetic energy transferred to the 17.7 g coin.
March 17, 2013

physics
A 740 N student stands in the middle of a frozen pond having a radius of 4.8 m. He is unable to get to the other side because of a lack of friction between his shoes and the ice. To overcome this difficulty, he throws his 2.8 kg physics textbook horizontally toward the north ...
March 17, 2013

Physics
A 0.105 kg baseball is thrown upward with an initial speed of 21.5 m/s. (a) What is the force on the ball when it reaches half of its maximum height? (Disregard friction.) (b) What is the force on the ball when it reaches its peak?
January 22, 2013

Physics
A hockey puck is hit on a frozen lake and starts moving with a speed of 13.80 m/s. Exactly 6.7 s later, its speed is 7.10 m/s. a) what is the puck's average acceleration? b) what is the coefficient of kinetic friction between the puck and the ice?
January 22, 2013

Physics
A boat moves through the water with two forces acting on it. One is a 2.06 103 N forward push by a motor, and the other is a 1.75 103 N resistive force due to the water. a)What is the acceleration of the 1300 kg boat? b)If it starts from rest, how far will it move in 11 s? c)...
January 22, 2013

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