What would be the orbital speed and period of a satellite in orbit 1.44 × 10^2 m above Earth? mass of earth = 5.97x 10 ^ 24 kg , radius of earth = 6.38 x10^6m
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Your target variable is δf, the magnitude of the difference in frequency between the waves emitted from the sonar device and the waves received by the device after reflecting off the whale. write an expression for δf in terms of the relevant frequencies using the subscript notation introduced above.

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine