A light with a second-order bright band forms a diffraction angle of 30.0°. The diffraction grating has 250.0 lines per mm. What is the wavelength of the light? 800 nm 1,000 nm 1,386 nm 1,732 nm

The diagram shows monochromatic light passing through two openings. What do the areas labeled X, Y, and Z represent?

If plants produce oxygen as a result of photosynthesis why aren't oxygen levels continually increasing the atmosphere

A voltmeter with resistance rv is connected across the terminals of a battery of emf e and internal resistance r. Find the potential difference vmeter measured by the voltmeter.

If a typical smelt weighs 225 g, what is the total mass of pcbs in a smelt in the great lakes?

A car with a mass of 1.50x10^3 kg starts from rest and accelerates to a speed of 18.0m/s in 12.0 s. assume that the force of resistance remains constant 400.0n during this time. what is the average power developed by the car's engine.

What is the weight of a 65 kg astronaut on mars?

When lava cools, what type of Rock forms?

A uniformly charged conducting sphere of 1.1 m diameter has a surface charge density of 6.2 µC/m2. (a) Find the net charge on the sphere. (b) What is the total electric flux leaving the surface of the sphere?

A blow-dryer and a vacuum cleaner each operate with a voltage of 120 V. The current rating of the blow-dryer is 12 A, while that of the vacuum cleaner is 5.7 A. Determine the power consumed by (a) the blow-dryer and (b) the vacuum cleaner.

4. A 40 kg child and a 30 kg child want to balance themselves on a 4 meter, 50 kilogramn see-saw. Where should the fulcrum be placed?