Consider a gas of pure ionized hydrogen. Calculate the central pressure of a Sun- like star which is having a temperature of 2×10 K and a mass density of 2x10° kg/m². (a) 33.2x10" pa (b) 1148x10" pa (c) 28.4x10" pa (d) 3348x10" pa

On the Apollo 14 mission to the moon, astronaut Buzz Aldrin hit a golf ball with a golf club improvised from a tool. The free-fall acceleration on the moon is 1/6 of its value on earth. Suppose he hit the ball with a speed of 29 m/sm/s at an angle 22 ∘∘ above the horizontal.   a. how long was the ball in flight in seconds? b. how far did it travel in meters? c. If there was no air resistance, how much farther would it travel in meters on the moon than on earth?

An airplane needs to gain an acceleration of 0.79  m/s2  to take off on a  2000 m runway, what is the velocity ( i.e. final velocity) of the airplane just before it takes off? [Pay attention to the units in answer choices] A. 112 km/h B. 203 km/h C. 786 km/h D. 304 km/h   Please explain step by step and the equations used, thank you.

I need the answer as soon as possible

9 A car making a 100 km journey covers the first 50 km. at 40 km/h. How fast must it cover the second 50 km. to have an average speed of 50 km/h for the entire trip? Show your solution 66.7 km/h 10 km/h 100 km/h 40 km/h

Describe the difference between someone who is accelerating and someone who is only moving at a constant velocity. O a A person moving a constant velocity will feel' how fast they are moving. A person accelerating does not feel the acceleration. O b.A person who is accelerating will 'feel' that acceleration, but the person moving at constant velocity will not feel the motion. OC Both of the above. O d. None of the above.