Posts by wendlen
Total # Posts: 7
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 ...
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?
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.
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 ...
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?
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?
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)...