4. The topmost photograph above shows the shock waves around a model of the X-15 experimentalaircraft being tested inside a wind tunnel. The bottom photograph above shows the shock wave and airturbulence from a bullet immediately after it has been fired from a rifle. Assume both photographswere taken near sea level and at room temperature. a) Estimate how fast the air is passing by themodel of the X-15. b) Estimate the speed of the bullet.

Answered: Image /qna-images/answer/be65bc5b-3403-4d72-acc2-2ac076e95677.jpg

Answered: 4. The topmost photograph above shows…

Similar questions

Two stars, A and B, have the same emissivity, but the radii and surface temperatures are different with RA = 0.5RB, and TA = 2TB. Assuming the temperature of space to be negligible, which star radiates the most energy per unit time? a. Star Ab. Star Bc. Both radiate the same amount of energy per unit time.d. More information is needed in order to make a determination.
Two atoms collide while moving in a dilute gas. The larger atom has a mass M₁ = 6 Daltons and a speed v₁ = 200 m/s, while the smaller has a mass M2 = 1 Daltons. During the collision both atoms simply bounce off each other. They do not change their speeds, but after the collision they each change their directions, bouncing in the indicated directions. Gravity can be ignored during the collision. A. What is the direction of the change in the momentum of the smaller atom? Use the letters from the compass rose below the figure to specify directions. B. Which of the following statements are true about the momenta of the two atoms? 1. The change in the momentum of M2 has the same magnitude as the change in momentum of M1. 2. The total change in the momentum of M1 and M2 must be zero. 3. The total momentum of M1 and M2 must be 0. 4. Because the angles are not the same, the collision cannot take place as described. C. What is the magnitude of the change in momentum of M₂? M₁ M₂ G F 90° E E B K
The 20-lb block has a speed of 8 ft/s when the force of F = (16t^3) lb is applied. Determine the velocity of the block when t = 2.45sec. The coefficient of kinetic friction at the surface is μk = 0.2. * Choose from the choices below. 175.12 ft/sec 252.52 ft/sec 155.32 ft/sec 224.25 ft/sec
27. You are in a toob floating down the Guadalupe River. The river is flowing with 2 m/s. Your friend, who is 1 meter away, pushes the floating cooler in your direction with a velocity (horizontal to the river) of 0.5 m/s. See drawing below You Initial distance = Cooler = 0.5 m/s River = 2 m/s 1 meter Cooter How much time does it take for the cooler to reach you? b. What is the total velocity of the cooler during its journey between your friend and you? When catch the floating cooler, consider it an inelastic collision. If С. you your mass is 65 kg and the cooler is 10 kg, what is your final total velocity? a.
Frosty the Snowman’s magic hat keeps him at a comfortable temperature of -11°C. However, a nearby test of a nuclear explosive device knocks off his hat and irradiates him. He absorbs 47 MJ of energy! Frosty’s initial mass is 99 kg of pure ice. Ignore the hat and any other ornaments. We need to determine if Frosty absorbs sufficient energy to melt completely. What is the minimum amount of energy, in megajoules, that is required to melt Frosty?
1
Water leaks from a hole in a water tank which is a 17.9 meters below the surface of the water which is 7.31 meters deep. The velocity of the water just leaving the hole is a. 12 b. 140 c. 19 d. 350
6
Quantitative Analysis - Introducing Elasti For each of the following situations: a. Choose an initial and final state (states A and B) that will be appropriate (interesting) for analysis. b. If there is not already a physical diagram of the situation and there should be one for proper analysis, include one. c. Construct a system schema of the situation. Do not forget to include the system boundary for the system specified by the problem. Choose your system wisely. d. Construct an energy bar chart and system flow diagram (LOL plots) for each problem. e. You are allowed to add other energy storage modes. You do not have to use the energy storage modes that are printed in each LOL plot. f. Find the unknown value. 1. A toy car is pressed onto a small spring so that it compresses it 5 cm and is then released. The spring's stiffness constant is 400 N/m and the cart's mass is 250 g. How fast is the cart moving when it leaves the spring?
A gas molecule of mass m moving with velocity u collides at right angles with the side of a container and rebounds elastically. Which one of the following statements concerning the motion of the molecule is NOT correct? 16. A. The change in kinetic energy of the molecule is zero. B. The magnitude of the change in momentum ci the molecule is 2mu. C. The force exerted by the molecule on the side of the container is equal to the force exerted by the container on the molecule. D. The magnitude of the change in momentum of the molecule is zero.
A circular air duct 15.0 cm in radius is used to replenish the air of a room that is 9.20 m by 5.00 m by 4.50 m every 15.0 minutes. How fast does the air flow in the duct? Please show the explanation and equations used.
Part 1: Bullet A 52 g bullet is fired from a height of 458 m. The initial speed of the bullet is 140 m/s. The bullet eventually comes to rest in a bucket containing 2.9 kg of olive oil that is at ground level. As a result of bringing the bullet to a stop (any change in PE while in the olive oil is negligible), how much does the temperature of the olive oil increase (express the answer in K)? Also determine how fast the bullet is going at impact. Ignore air drag and assume that all of the thermal energy generated goes into heating the olive oil. Impact speed = AT= Part 2: Nail A 0.52 kg hammer strikes a 28 g copper nail into wood board. The nail is horizontally aligned and at the moment of impact with the nail, the hammer had a speed of 8.9 m/s. Assume both the hammer and the nail come to a stop and that all of the thermal energy generated goes into heating the nail. Determine how much the temperature of the nail will increase after one hit and how many hits it will take to increase its…

SEE MORE QUESTIONS