Suppose the space shuttle is in orbit 400km from the earth's surface, and circles the earth about once every 90 minutes. find the centripetal acceleration of the space shuttle in it's orbit. express your answer in terms of g, the gravitational acceleration at the earth's surface

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An architect builds a model of a park in the shape of a rectangle. the model is 40.64 centimeters long and 66.04 centimeters wide. one inch equals 2.54 centimeters. use the ratio table to find the ratio of the length to the sum of the length and width in inches and in simplest form. length 40.64 width 66.04 a. 8: 21 b. 13: 21 c. 21: 13 d. 21: 8