How many neutrons does element x have if it's atomic number is 27 and it's mass number is 74

How long does for one rotation of earth

If dye x has a molar absorptivity, ε = 4.50 x 104 cm-1 m-1, at a certain wavelength, what concentration of the dye, in a 1.00 cm cuvette cell will produce an absorbance of 0.417?

If the speed and the wavelength of a particular wave is known, then the wave equation can be used to determine the wave's?

Edward travels 150 kilometers due west and then 200 kilometers in a direction 60° north of west. What is his displacement in the westerly direction

A physics professor did dare - devil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle (Fig. P3.63). The takeoff ramp was inclined at 53.0°, the river was 40.0 m wide, and the far bank was 15.

How much energy did it take to bring you from first floor to second floor

Trent got a set of building blocks for his fifth birthday. He wanted to call his dad who lives out of state and share the exciting news about his gift.

What is the orbital radius of venus if venus has an average orbital period of 0.615 years

What is a physical property of a water bottle?

A certain kind of glass has an index of refraction of 1.640 for blue light of wavelength 440 nm and an index of 1.595 for red light of wavelength 670 nm. If a beam containing these two colors is incident at an angle of 30.