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- You are part of a team in an engineering class that is working on a scale model of a new design for a life vest. You have been asked to find the mass of a piece of foam that will be used for flotation. Because the piece is too bulky to fit on your balance, you break it into two parts. You measure the mass of the first part as 128.3 0.3 g and the second part as 77.0 0.3 g. a. What are the maximum and minimum values for the total mass you might reasonably report? b. What is the best estimate for the total mass of the foam? Hint: Propagation of uncertainty is described in Appendix A.CASE STUDY On planet Betatron, mass is measured in bloobits and length in bots. You are the Earth representative on the interplanetary commission for unit conversions and find that 1 kg = 0.23 bloobits and 1 m = 1.41 bots. Express the density of a raisin (2 103 kg/m3) in Betatron units.I need help with these questions and I need an explanation Is the answer for 8: A. -20 m/s/s B. 3.33 m/s/s C. -6.7 m/s/s D. 20 m/s/s Is the answer for 6: A. 8 m/s B. 40 m/s C. 20 m/s
- 532 mm' (5.32x 10" m] (a) 1130 g em (1.13x 10* kg m³] 1.013 Mg cm's [1.013 x 10' kg m' s²] (b) (c) O WhatsApp Fahira Skb: tq e The initial velocity of particle is 5.0 x10" ms in the positive O,- direction. After 2.0 s, the increaIse in its velocity is 2.3x10" mSin the positive O, direction. Calculate the magnitude and direction of the velocity of the particle after 2.0 s. [8.85 x 10° ms", 55.59 above positive x-axis] 10. П. (а) A piece of metal measure 2mm x 5 cm x 1.5 m and its mass is 1.35 kg. Calculate the density of metal in kg m'. [9.0x 10 kg m) (b) The speed limit on the highway is 110 km h". What is the speed limit in ms' [30.6 m s'] ii. m min' (1833 m min"] i. A force of 200 N makes an angle of 0 with the horizontal and it has a magnitude of 60 N in the y-component. Find the magnitude of horizontal component.[191 N] 12. (a) A tricycle pulls a cart with a force of 100 N. The cable connecting the cart to tricycle makes an angle of 50° to the horizontal surface. Find the (b) i.…If you have a ball with a mass of 6.00kg, that has an initial velocity of vA=(2.00i + 5.00j)m/s and a final velocity of vB=(-2.00i + 8.00j)m/s, What is the change in velocity in unit vector format? a. -4.00i + 3.00j b. -2.83i + 3.61j c. 4.00i – 3.00j d. 0.00i + 13.0j1. a bullet of mass = 5.00 g = 0.005 kg v = 300 m/s b 50.0 kg at 9.00 m/s c mass = 1.00 x 10³ kg moving at 20.0 m/s Find the kinetic energies. Ans. a. 225 J b. 2.02 x 10³ J c. 2.00 x 105 J
- A 15g bullet is fired horizontally into a 3 kg block of wood suspended by a long cord. The bullet sticks in the block. Compute the speed of the bullet if the impact causes the block to swing 10cm above its initial level. A. 0.254 km/s B. 0.252 km/ C. 0.281 km/s D. 0.218 km/sI need help with these questions and I need an explanation Is the answer for 4: A. -0.50 m/s B. 0.25 m/s C. 0 m/s Is the answer for 5: A. -0.25 m/s B. -0.5 m/s C. 1.0 m/sPhysical quantities are classified as either vectors or scalars. Classify the following terms as either vectors or scalars: Force ii. Mass iii. Temperature iv. Velocity v. Momentum vi. Time
- 2. A mass of 4 kg is dropped with a velocity of 5 m/s. a. Find an expression for the velocity of an object if the force due to air resistance is 60v. b. Find the limiting velocity for the object.e 7.2××10-3 kg⋅m/skg⋅m/s. Express this quantity as provided or use any equivalent unit. (Note: 1 kgkg = 1000 gg).An object has a kinetic energy of 230J and a linear momentum of magnitude 43 kg m/s. Find the mass of the object (in kg). a. 2 b. 3 c. 2 314