Physics, 01.01.2021 20:30 mervindavisk
Two identical batteries, each of emf 2 volt and internal resistance r=1 ohm by passing a current through it. The maximum power that can be developed across R=1 ohm using these batteries is [AFMC 1997]a) 3.2Wb) 8.2Wc) 2Wd) 4W
Answers: 2
Physics, 21.06.2019 19:30
A33.1 g copper object is launched from a 1.5 m 30° steel incline positioned on the floor by being pulled up a string attached to a 50.0 g mass suspended vertically over a pulley. the object is projected towards a glass table where it lands when it is at the point along its trajectory with the lowest speed. it comes to a halt when it clears the opposite edge of the table. it then falls and lands on 9 physics texts each 5 cm thick that are stacked on the floor on the opposite side of the table. assume that the table does not have a ledge and the rectangular object experiences 0.05 n of air resistance as it falls towards the books. how far and how long did the object travel and how fast does it hit the books. assume that at the moment the copper object leaves the incline, the massless string and ideal pulley break off
Answers: 2
Physics, 22.06.2019 18:30
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
Answers: 1
Physics, 23.06.2019 05:00
What about a rubber band, can it change its shape? is it a solid?
Answers: 2
Physics, 23.06.2019 08:00
Which of these are physical changes in matter? check all that apply. boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese
Answers: 2
Two identical batteries, each of emf 2 volt and internal resistance r=1 ohm by passing a current thr...
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