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- A rocket with a mass of 2.70x106 kg exerts a vertical force of 3.40×107 N on the gases it expels. ▼ Part A Determine the acceleration of the rocket. Assume g remains constant, and ignore the mass of gas expelled (not realistic). Express your answer using two significant figures. VE ΑΣΦ Submit Dart R Request Answer ? m/s²In an experiment conducted at Carleton university, following experimental setup has been prepared. In this experiment, block A is released from rest and strikes cart B. Neglecting the effect of friction, find the maximum displacement s that cart B travels beyond point C. The coefficient of restitution for the collision is e = 0.7. 0.6 m 30 Impact Test 3 kg 60° 1.8 m B 1 kg This region is the arc of a circle6:23 PM Tue Dec 7 a 11% Signature E MasteringPhysi X Content New Tab Question 1 of 3 X Question 16 of X MasteringPhysi X Q Chapter 3 Flash X + A session.masteringphysics.com 53 KExtra credit assignment - Attempt 1 Problem 7.55 18 of 20 Constants Part A Suppose you were to drop a 16 lb bowling ball from the top of the Empire State Building, which is about 440 m tall, onto a machine that would catch it and then convert its kinetic energy into electrical energy. For how long could the resulting energy light a 110 W light bulb? Express your answer in seconds. ? t = S Submit Request Answer Part B Is it actually possible to convert mechanical energy to electrical energy with 100% efficiency? Yes No Submit Request Answer Provide Feedback Next >
- Newton's first law states that: Group of answer choices Ia. n the absence of any net force acting on it, a mechanical system is necessarily at rest. b. In the absence of a non-zero net force acting on it, a mechanical system keeps moving in the same direction at the same speed (including the case v=0). c. For any pair A/B of objects interacting with one another, the force of A acting on B is the equal-opposite of the force of B acting on A. d. The rate of change of the velocity of a system is proportional to the net force acting on it.A 4.0 × 10¹ kg spaceship is at rest in deep space. Its thrusters provide a force of 1200 kN. The spaceship fires its thrusters for 20 s, then coasts for 17 km. Part A How long does it take the spaceship to coast this distance? Express your answer with the appropriate units. ITwo ice skaters, with masses of 36.0 kg and 75.0 kg, are at the center of a 40.0 m diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink. Part A If the heavier skater reaches the edge in 20.0 s , how long does the lighter skater take to reach the edge? ΑΣΦ Submit Request Answer