Name 1 element in the periodic table that sounds like a name

If angle "a" is 25°, angle "b" is: a) equal to angle c b) less than angle c c) greater than angle c

Amother used 150 watts of power to raise a 15 newton object in a time interval of 8.0 seconds. through what vertical distance was the object raised ?

Calculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energycalculate the numbers of photons having a wavelength of 10.0 mm required to produce 1.0 kj of energy