The Concorde traveled 8,000 km between two places in North America and Europe at an average speed of 425 m/s. What is the total difference in time (in ns) between two similar atomic clocks, one on the airplane and one at rest on Earth, during a one-way trip

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

where is the