Suppose an explosive volcanic eruption throws a 1 ton (about 1000 kg) rock vertically upward with...
In a volcanic eruption, a 2.0 kg piece of porous volcanic rock is thrown vertically upward with an initial speed of 44 m/s. It travels upward a distance of 47 m before it begins to fall back to the Earth. 1) (a) What is the initial kinetic energy of the rock? (in J) 2) (b) What is the increase in thermal energy due to air friction during ascent? (in J) 3) (c) If the increase in thermal energy due to...
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Question 9 4 pts Suppose a disk of radius R = 6 cm is rotating with an angular velocity w = 7 rad/s. What is the speed of a point on the rim of the disk? 200 m/s O 0.84 m/s 14 m/s - 168 m/s O 42 m/s O 0.42 m/s 1.68 m/s 0.06 m/s 0.72 m/s Question 10 4 pts Suppose the angular velocity of a disk of radius R = 6 cm increases uniformly from 14...
I'd question 40 please.
39. Rocket Motion Suppose a small single-stage rocket of total mass m) is launched vertically, the positive direction is upward, the air resistance is linear, and the rocket consumes its fuel at a constant rate. In Problem 22 of Exercises 1.3 you were asked to use Newton's second law of motion in the form given in (17) of that exercise set to show that a mathematical model for the velocity v(t) of the rocket is given...
answer all please
1 If a 71-kg astronaut at rest in space throws a ball with mass 0.61 kg at a speed of 12 mph. What happens to the astronaut as a result? 4 A moving ball collides elastically with another ball that is twice as heavy and is initially at rest. What happens to the lighter ball as a result of the collision? (a) She picks up some of the movement of the ball, causing her to move forward....
Suppose a small compact car with a mass of 1000 kg is traveling
north on Morewood Avenue at a speed of 15 m/s. At the intersection
of Morewood and Fifth Avenues, it collides with a truck with a mass
of 2000 kgthat is traveling east on Fifth Avenue at 10 m/s. It’s
now 2 seconds after the collision has occurred. Fortunately, all
occupants were wearing seat belts and there were no injuries, but
the two vehicles became thoroughly tangled and...
TR PROBLEMS: Show your 1. A 1800 Kg car moves around a flat circular road of radius R- 100 m friction available between the tire and the road is 10368 N. Calculate (A) car can have so that it does not get out of the curve (B) the time alLoroblems radius R-100 m. The maximum amount ef (C) the new radius of the bigger circle the car moves on if it moves at a higher s the maxinmum speed the...
Problem number 8,14,&20.
11. A softball player hits the ball and starts running toward first 21. I Which of the following moti base. Draw a motion diagram, using the particle model, show- ing her velocity vectors during the first few seconds of her run. diagram of Figure Q1.21? A. An ice skater gliding acros B. An airplane braking to a s C. A ear pulling away from a D. A pool ball bouncing off 12. A child is sledding on...
Please answer the following physic questions. Thank you! 1. A dog sees a flowerpot sail up and then back past a window 5.0 ft high. If the total time the pot is in sight is 1.0 seconds, find the height above the window that the pot rises. 2. An elevator ascends with an upward acceleration of 4.0 ft/s2. At the instant its upward speed is 8.0 ft/s, a loose bolt drops from the ceiling of the elevator 9.0 ft from...
t the Wackes in ersed from e with mantude of 15 The Black I haa t he block 2 has mass and Neck has a mass Calculate c t of inte friction between black and a (A) 0.34 B) 0.45 (C) 0.87 (D) 0:54 0.99 14 The work of a given force has its maximum positive value when CA) The vector of displacement and force are at the same direction B) The vector of displacement and force are at the...
1. When it comes to financial matters, the views of Aristotle can be stated as: a. usury is nature’s way of helping each other. b. the fact that money is barren makes it the ideal medium of exchange. c. charging interest is immoral because money is not productive. d. when you lend money, it grows more money. e. interest is too high if it can’t be paid back. 2. Since 2008, when the monetary base was about $800 billion,...