The cosmic microwave background radiation is only found close to Earth
can be seen with the naked eye as a glow
is only found in our galaxy
fills the entire background of space

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.

Asolid round steel rod 6.25 mm in diameter and 375 mm long is rigidly bonded to the end of solid square brass rod 25 mm on a side and 300 mm long. the geometric axes of the bare are along the same line. an axial tensile force of 5.4 kn is applied at the extreme ends of the assembly. for steel e = 200 gpa and for brass e = 90 gpa. determine the total elongation for the assembly.