Which of these systems is NOT an ""isolated system"" to which conservation of momentum can be applied?1. A billiard ball collides with another billiard ball on a level pool table. (Ignore friction with the table during the instant of the collision.) System: the two balls2. A ball falls freely toward the ground. (Ignore air friction.) System: the ball and the earth3. All of these in fact are isolated systems.4. A single car slips on an icy road. (Friction with the ice is negligible.) System: the car5. Two cars slipping on an icy road collide with one another. (Friction with the ice is negligible.) System: the two cars6. A ball falls freely toward the floor. (Ignore air friction.) System: the ball7. Two masses connected by a spring oscillate on a frictionless tabletop. System: the two masses and the spring
Answers: 2
Physics, 21.06.2019 15:10
Alightning strike consists of charge moving from a cloud to the ground . in one particular case, the electrons in a lightning strike are confined to travel within a radius of 1.5 m and to move at a speed of 5.0 x 10 m/s. if the density of electrons in the strike is 10'15 electrons/m what current is carried by the lightning ?
Answers: 1
Physics, 21.06.2019 23:30
Which of the following statements is true about women and minorities in early psychology? a. in the early 20th century, numerous graduate schools recruited women and minorities to study psychology. b. opportunities in higher education were limited for women and minorities in the early 20th century due to discrimination. c. despite some obstacles, there were numerous employment opportunities for women and minorities. d. women and minorities were often selected to do academic research in an effort to make the field more diverse.
Answers: 3
Physics, 22.06.2019 02:00
Ineed asap! list 3 examples in which friction us or makes things easier in our daily life. explain the effect of friction for each. *make sure you explain the effect of friction for each example! *
Answers: 1
Physics, 22.06.2019 05:00
At time t=0, a particle is located at the point (3,6,9). it travels in a straight line to the point (5,2,7), has speed 8 at (3,6,9) and constant acceleration 2i−4j−2k. find an equation for the position vector of the particle.
Answers: 2
Which of these systems is NOT an ""isolated system"" to which conservation of momentum can be applie...
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