A 16 inch thin-crust cheese pizza is cut equally into eight slices. Assuming a uniform distribution of sauce and toppings, determine the position vector řem of the center of mass for the slice highlighted in the figure. Use ijk vector notation, and enter a numerical value with two significant figures for each component. Tem in %3D What is the radial distance rem of the center of mass from the pizza's center? in rem =
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- A 0.05-kg bullet is fired horizontally at a speed of 300.0 m/s strikes a 4.0-kg block of wood sitting at the edge of the table as shown below in Figure 1. The bullet gets stuck in the block after impact. The height of the table measured from the floor h A. Calculate the speed of the bullet-plus-block combination immediately after the bullet comes to rest inside the block. = 1.60 m. B. How far from the table does the block hit the floor? Figure 1 h3. Make sure to use 1, j and k unit vectors. a. Determine the moment vector M1 exerted on the pipe by the left couple. b. Determine the moment vector M2 exerted on the pipe by the right couple. c. Determine the sum of the couples' moment vectors M, and M2. You have to be very clear about the directions. F1-40N A50 N 50N 2 m 4 m 4 m 40N 60 60Part A What is the magnitude of the momentum of a 0.0063-kg marble whose speed is 0.60 m/s? Express your answer to two significant figures and include appropriate units. Templates Symbols undo redo reset keyboard shortcuts help Value Units Submit Request Answer Part B What is the speed of a 0.129-kg baseball whose momentum has a magnitude of 3.12 kg. m/s? Express your answer to two significant figures and include appropriate units. Templates Symbols undo redo reset keyboard shortcuts help Value Units
- Next, imagine that a bullet impacts the block that you see and embeds itself. Let's say that you know the speed of the bullet just before it hits and also the mass of the bullet. Explain, with words and equations, how you would determine the angle theta. eed to know i L-h L Center of Pendulum catchA rocket is fired in a gravity-free environment in deep space. The rocket has an initial mass of 9500 kg and ejects gas with a velocity of 2450 m/s. The rocket fires for 4.40 s. Calculate the mass (in kg) of the gas that must be ejected in the time given to give the rocket an acceleration of 49.50 m/s2IVIT IN UTES ASK YOUR TEACHER PRACTICE ANUTHER A baseball with a mass of 145 g is thrown horizontally with a speed of 39.7 m/s (89 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.6 m/s (102 mi/h). Determine the average force (in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming ball to be positive. (Indicate the direction with the sign of your answer.) Additional Materials O Reading
- FI R %24 Part A A ball of mass m moving with velocity v strikes a vertical wall as shown in (Eigure 1). The angle between the ball's initial velocity vector and the wall is 6 as shown on the diagram, which depicts the situation as seen from above. The duration of the collision between the ball and the wall is At, and this collision is completely elastic. Friction is negligible, so the ball does not start spinning. In this idealized collision, the force exerted on the ball by the wall is parallel to the x axis. What is the final angle Or that the ball's velocity vector makes with the negative y axis? Express your answer in terms of quantities given in the problem introduction. > View Available Hint(s) Of = 0; Submit Previous Answers v Correct Part B What is the magnitude F of the average force exerted on the ball by the wall? Express your answer in terms of variables given in the problem introduction and/or v;x. • View Available Hint(s) x'auz Submit Previous Answers X Incorrect; Try…A 800 kg cart is rolling to the right at 1.10 m/s. A 70.0 kg man is standing on the right end of the cart. Part A What is the speed of the cart if the man suddenly starts running to the left with a speed of 8.00 m/s relative to the cart? Express your answer with the appropriate units. μA Value Submit Units Request Answer ?Figure @ Determine the position of the center of mass zem of the baton shown in (Figure 1). Suppose that z-axis is directed to the right. Suppose that m₁ = 0.19 kg. m₂ = 0.07 kg, and m3 = 0.07 kg. ← → C a session.masteringphysics.com/myct/itemView?assignmentProblemID=182857878 5 m₂ T G B Detero X Y Part A ▼ Tem Determine zem. taking the origin of your coordinate axis to be the center of the larger ball. Express your answer with the appropriate units. Submit Part B H Tem O Search Course x 4 N μÅ 5 Value Request Answer U Determine z taking the origin of your coordinate axis to be the center of the smaller ball. Express your answer with the appropriate units. °H μA 5 Value GWhat po x # 8 → Units hp Units FDE K C PING C Determix C ne O ? ? P JU с EN
- A meter stick has a mass of 0.30 kg and balances at its center. When a small chain is suspended from one end, the balance point moves 12.0 cm toward the end with the chain. Determine the mass of the chain. 0 x Determine a convenient place for the origin of the coordinate system. See if you can write an expression for the center of mass of the two objects in terms of known quantities and the mass of the chain and then solve for the mass of the chain. g Submit AnswerJill threw a dodgeball completely horizontal in x-direction with velocity of +5 m/s and mass of .5 kg. At the same time her friend threw a dodgeball with the same mass in the -x direction and a velocity of -2 m/s. The balls hit each other, and Jill's ball was deflected 30° above the original path, while her friend's deflected 20⁰. below the initial path. a. Ignoring gravity, solve the velocity of each ball after the collision, using a free body diagram. b. If both balls had a magnitude of 3 m/s, how much kinetic energy was "lost" during the collision?9 For part 3, one group of students were given the following values m₁ = 75 g, m3 =70 g, and 01-55.0°. What should be their m2 value? Round your answer to an integer number. Your Answer: 12