List the three great pioneers of rocket science and their contributions
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6. List the three great pioneers of rocket science and their contributions.
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- LETTER ONLY 2. An object has momentum must also have ___ A. Acceleration B. Mechanical energy C. Potential energy D. Impulse 3. A ball of mass m moves at a constant speed v in circular path with a radius R. Which of the following represents the net force applied on the ball? A. ??/? B. ??^2/R C. ?? D. ?/??1. You and a friend set up an umbrella and chairs at Torrey Pines State Beach. Your friend goes boogie boarding while you read a book. Half an hour later you are surprised to see that your friend has moved south, parallel to the beach. They are still boogie boarding the same distance from shore, in the surf zone. Why did your friend drift parallel to the beach? 2. The Sun is much more massive than the Moon, but the Moon has a bigger influence on Earth's tides than the Sun. Why is this? 3. Even when there is no wind at the beach, we still see waves. What is the source of these waves? Do not include tides, mass movement, or earthquakes in your answer. 4. What causes ocean surface water to sink to the bottom and become deep water? Where does this happen? 5. How do you escape a Rip Current?Help. I am unsure what I am doing wrong.
- 5. The planet Theta has 3 times the gravitational field strength and 4 times the mass of the Earth. How does the radius of Theta compare with the radius of Earth? a. rTheta = TEarth 2 b. rrheta = Earth C. Theta = -r. Earth 3 d. TTheta = V VZrE Earth15. An object is dropped above the surface of planet Nexus and falls 11.2 meters in 2.4 seconds. What is the mass of the planet Nexus ? (assume: I the radius of the plane Nexus is 3.45-100 meters and G = Nm²/kg, initial velocity of the object is 0 m/s) 6.670-10-¹1 16. An object is launched at a velocity of 33 m/s in a direction making an angle 34° upward with the horizontal. What is the total flight time of the object? (assume g 9.81 m/s²)I don’t know where to start with this problem.
- Match the conserved quantity with the symmetry of nature that is responsible. - A. B. C. Energy - A. B. C. Momentum - A. B. C. Angular momentum A. Rotation B. Space C. Time24. The kinetic energy of an object is 200 Joules while its' momentum is 8 kg m/s. What is the speed of this object? A. 25 m/s B. need to know the mass C. 1600 m/s D. 50 m/s E. 80 m/sJet propulsion is explained by Select one: a. Newton's Third law b. both laws c. neither laws d. conservation of momentum