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How to solve this two questions?
Two marbles are launched at t=0 in the experiment illustrated...
A stomp rocket is launched vertically upwards with a burst of air, when a child jumps...
A stomp rocket is launched vertically upwards with a burst of air, when a child jumps on a flexible pillow connected to the launcher tube. Air resistance can be ignored in this question. At t=0, the rocket has just left the launcher, it has a speed of 25 m/s and the only force that it experiences is the force of gravity. "Up" is defined as the positive direction and define zero altitude as the position of the rocket at t=0....
M Review At the instant A = 50, the boy's center of mass G is momentarily...
M Review At the instant A = 50, the boy's center of mass G is momentarily at rest. (Figure 1) Determine his speed when A = 85. The boy has a weight of 75 lb . Neglect his size and the mass of the seat and cords. Express your answer to three significant figures and include the appropriate units. HÅR O a? v= Value Units Figure 1 of 1 > Submit Request Answer 10 ft Part B Determine the tension...
A 0.060-kg tennis ball, moving with a speed of 5.50 m/s , has a head-on collision...
A 0.060-kg tennis ball, moving with a speed of 5.50 m/s , has a head-on collision with a 0.080-kg ball initially moving in the same direction at a speed of 3.54 m/s . Assume that the collision is perfectly elastic. Part A Determine the speed of the 0.060-kg ball after the collision. Express your answer to two significant figures and include the appropriate units. Part A: Part A Determine the speed of the 0.060-kg ball after the collision. Express your...
Two railroad cars, each of mass 58000 kg kg and traveling 85 km/h km/h in opposite...
Two railroad cars, each of mass 58000 kg kg and traveling 85
km/h km/h in opposite directions, collide head-on and come to
rest.
Two railroad cars, each of mass 58000 kg and traveling 85 km/h in opposite directions, collide head-on and come to rest. Part A How much thermal energy is produced in this collision? Express your answer to two significant figures and include the appropriate units. HÅR O ? E = 2.19.10 Submit Previous Answers Request Answer * Incorrect;...
One billiard ball is shot east at 1.7 m/s . A second, identical billiard ball is...
One billiard ball is shot east at 1.7 m/s . A second, identical billiard ball is shot west at 0.90 m/s . The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90∘ and sending it north at 1.33 m/s . 1) What is the speed of the first ball after the collision? Express your answer to two significant figures and include the appropriate units. 2) What is the direction of the first ball after...
Part A With what minimum speed must you toss a 190 g ball straight up to...
Part A With what minimum speed must you toss a 190 g ball straight up to just touch the 11-m-high roof of the gymnasium if you release the ball 1.6 m above the ground? Solve this problem using energy. Express your answer to two significant figures and include the appropriate units. CHÅR O ? Value Units Vmin = Submit Request Answer Part B With what speed does the ball hit the ground? Express your answer to two significant figures and...
A 0.450-kg ice puck, moving east with a speed of 5.16 m/s , has a head-on...
A 0.450-kg ice puck, moving east with a speed of 5.16 m/s , has a head-on collision with a 0.950-kg puck initially at rest. Assume that the collision is perfectly elastic. What is the speed of the 0.450-kg puck after the collision? Express your answer to three significant figures and include the appropriate units. What is the speed of the 0.950-kg puck after the collision? Express your answer to three significant figures and include the appropriate units.
A 120 g ball moving to the right at 4.4 m/s catches up and collides with...
A 120 g ball moving to the right at 4.4 m/s catches up and collides with a 450 g ball that is moving to the right at 1.0 m/s . A. If the collision is perfectly elastic, what is the speed of the 120 g ball after the collision? Express your answer to two significant figures and include the appropriate units. B. If the collision is perfectly elastic, what is the speed of the 450 g ball after the collision?...
What is the escape speed of an electron launched from the surface of a 1.2-cm-diameter glass...
What is the escape speed of an electron launched from the surface of a 1.2-cm-diameter glass sphere that has been charged to 5.0 nC ? Express your answer to two significant figures and include the appropriate units.
Part A What is the magnitude of the momentum of a 0.0073-kg marble whose speed is...
Part A What is the magnitude of the momentum of a 0.0073-kg marble whose speed is 0.70 m/s? Express your answer to two significant figures and include appropriate units. НА ? Value Units Submit Request Answer Part B What is the speed of a 0.134-kg baseball whose momentum has a magnitude of 3.06 kg.m/s? Express your answer to two significant figures and include appropriate units. μΑ ? Value Units Submit Request Answer Provide Feedback
M Review At the instant A = 50, the boy's center of mass G is momentarily at rest. (Figure 1) Determine his speed when A = 85. The boy has a weight of 75 lb . Neglect his size and the mass of the seat and cords. Express your answer to three significant figures and include the appropriate units. HÅR O a? v= Value Units Figure 1 of 1 > Submit Request Answer 10 ft Part B Determine the tension...
Two railroad cars, each of mass 58000 kg kg and traveling 85
km/h km/h in opposite directions, collide head-on and come to
rest.
Two railroad cars, each of mass 58000 kg and traveling 85 km/h in opposite directions, collide head-on and come to rest. Part A How much thermal energy is produced in this collision? Express your answer to two significant figures and include the appropriate units. HÅR O ? E = 2.19.10 Submit Previous Answers Request Answer * Incorrect;...
Part A With what minimum speed must you toss a 190 g ball straight up to just touch the 11-m-high roof of the gymnasium if you release the ball 1.6 m above the ground? Solve this problem using energy. Express your answer to two significant figures and include the appropriate units. CHÅR O ? Value Units Vmin = Submit Request Answer Part B With what speed does the ball hit the ground? Express your answer to two significant figures and...
Part A What is the magnitude of the momentum of a 0.0073-kg marble whose speed is 0.70 m/s? Express your answer to two significant figures and include appropriate units. НА ? Value Units Submit Request Answer Part B What is the speed of a 0.134-kg baseball whose momentum has a magnitude of 3.06 kg.m/s? Express your answer to two significant figures and include appropriate units. μΑ ? Value Units Submit Request Answer Provide Feedback
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