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- PLEASE WRITE THE ANSWER IN 10 MINUTES ! ! ! Which of the following correctly states Newton's second law of motion? Select one: a. The net force acting on an object is equal to the mass of that object times its acceleration. b. None of the above is correct. c. An object in motion moves in a parabolic trajectory unless acted upon by a net force. d. Forces occur in matched pairs that are opposite in magnitude and equal in direction. e. Every object retains its state of rest or its state of uniform straight-line motion unless acted upon by a balanced force.arrow_forwardThe nucleus of "Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneously breaks into two alpha particles (hellum nuclel, each consisting of 2 protons and 2 neutrons). (a) What is the force between the two alpha particles when they are 4.88 x 105 m apart? (b) What is the initial magnitude of the acceleration of the alpha particles due to this force? Note that the mass of an alpha particle is 4.0025 m/s².arrow_forwardWhich of the following is incorrect regarding Newton's Third Law of Motion? A. A force acting on a body is always the results of its interaction with another body. B. Whenever two bodies interact, the two forces that they exert on each other are always equal in magnitude and direction. C. Forces always comes in pairs, that is for every action, there an equal but opposite reaction. D. The force exerted by a on bis equal to (-) force exerted by b on aarrow_forward
- IP 36.25 kg masses are at corners of an equilateral triangle and located in space far from any other objects. If the size of the triangle are 1.01 m long, find the magnitude of the net force exerted on each of the three masses. How does your answer to part A change if the size of the triangle are doubled in length?arrow_forwardIn Figure 1, we depict two boxes and an applied force of magnitude 100.0N. The horizontal floor is frictionless, and box A is more massive thanbox B. Which of the following is correct? (Before you answer this question, draw FBDs and sum forces.)a. Box A pushes on box B with a force of 100 N, and box B pusheson box A with a force of 100 N.b. Box A pushes on box B harder than box B pushes on box A.c. Boxes A and B push on each other with equal forces of less than 100.0N.d. The boxes will not begin to move unless the total weight of the twoboxes is less than 100.0 N.arrow_forwardNewton’s law of gravitation quantifies how the force between two objects is determined. Which of these statements is false? a.The force of gravity between two objects is proportional to the product of the two masses. b.The force of gravity between two objects is proportional to the inverse of the square of the separation between the objects and is directed along the line joining the two objects. c.The force of gravity between two objects never reaches zero no matter how far apart the objects are. d.The force of gravity between two objects is responsible for the formation of planets. e.The force of gravity between two objects is always directed along the direction of the path of each object. Earth's inner magnetosphere contains two doughnut-shaped zones of high-energy charged particles. The zones are named the a.Van Allen belts. b.magnetopause. c.Northern Lights. d.Southern Lights. e.dynamos.arrow_forward
- An astronaut moves in space with a constant speed. If he is far from the influence of gravity of any star or planet, what is the minimum force required in order for him to keep on moving? a) force equal to its weight b) force equal to its mass c) force depending on its speed d) zeroarrow_forward11. Which of the following is not a fundamental force? a) frictional force b) electromagnetic force c) gravitational force d) strong forces e) weak forcesarrow_forwardA 26.84 kg dog jumps on a 86.86 kg bed. As the dog walks around on the bed, what is the average force that the bed applies to the dog?arrow_forward
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