A space station is in a circular orbit about the earth at an altitude h of 5.0 x 10² km. If station makes one revolution every 95 min. A. What is the orbital speed? B. What is the centripetal acceleration

A. a2=a1/3 B. a2=3a1 C. a2=a1/9 D. a2=a1 E. a2=9a1

5. A satellite has an orbital radius 100 km above the Earth's surface. See #4 for a. What is the speed of the satellite? b. How many minutes does it take the satellite to complete one orbit? t.docx 787 Ke vew

1. Gravity: A satellite circles the earth three times per day (it has an 8-hour period). Given Mearth = 5.98x1024 kg, rearth = 6.38x10° km, and G=6.67x10" Nm²/kg², and assuming the orbit is circular, a. Find the radius of the orbit, how many earth radii is it? b. What is the speed of the satellite (in km/s)? c. What is the acceleration due to the Earth's gravity at that radius, i.e. what is "g" at the satellite radius? How much stronger is g at the Earth's surface (what is g/g.t_sat)?

A 2kg toy is moving in a circle of radius 2.5 m with a speed of 3m/s.Calculate the centripetal acceleration of the toy? choose one correct answer with the correct units.   A. 3.6 m/s^2   B. 1.2 m/s^2   C. 3.6 m/s   D. 0.833 m/s^2

At takeoff, a commercial jet has a speed of 68 m/s. Its tires have a diameter of 0.88 m. a. At how many rev/min are the tires rotating? b. What is the centripetal acceleration at the edge of the tire in m/s2 c. With what force must a deterimned 1.15 * 10-15 kg bacetrium cling to the rim in N? d. Take the ratio of this force to the bacterium's weight

4. Astronomers use a telescope to watch a small moon orbit a planet in our solar system. They find that it takes the moon 14 days to go around the planet once, and they estimate the radius of the moon's orbit is about 4.2 x 10² meters. a. From this information, estimate the mass of the planet. b. Using the mass you found in part (a), estimate the free-fall acceleration on the planet's surface if it has a radius of 3.8 x 106 meters.

10. You're out in space, on a rotating wheel-shaped space station of radius 551 m. You feel planted firmly on the floor , due to artificial gravity. The gravity you experience is Earth-normal, that is, g = 9.81 m/s^2. How fast is the space station rotating in order to produce this much artificial gravity? Express your answer in revolutions per minute (rpm).      1.019 rpm      1.274 rpm      0.133 rpm      73.5 rpm

4. We are planning a human exploration mission to Mars. We will first place our spacecraft into a circular around Mars and then send down a lander. a) If we want the spacecraft to orbit at an altitude of 170 km above the Martian surface, what will the velocity and orbital period of the spacecraft? b) When we land astronauts on the surface of Mars, what acceleration due to gravity in terms of g's (i.e. as a fraction of the Earth's gravitational acceleration) will the astronauts experience? You are permitted to use an online resource (e.g. Google) to find the necessary information about Mars that you might need in solving this problem.