What is the intensity, in terms of i0, if a lens defocuses the laser beam to 10 times its initial diameter?

A box weighing 100 n is pushed up an incline plane that is 5 m long. It takes a force of 75 n to push it to the top, which has a height of 3m. Find the efficiency

Where is the frequency of infrasound in relation to the range of a human's ability to hear? A) It can be in any range. B) It is in the human range. C) It is above the human range. D) It is below the human range.

La altura de un tornillo de banco respecto a la superficie es de 80 cm expresar dicha medida en pies ...

What is the main difference between cardio and strength-training activities? A. Cardio activities increase your physical strength, while strength-training activities work your heart and lungs. B.

if you are given a glass whose outer surface was smeared with oil, will it be easier to hold the glass and why?

If an electromagnet is used to pick up nails and other metal objects, what happens when the current is turned off?

An electron enters a region of uniform perpendicular en and bn fields. it is observed that thevelocity nv of the electron is unaffected. a possible explanation is:

Halley's comet orbits the sun roughly once every 76 years. It comes very close to the surface of the Sun on its closest approach. Estimate the greatest distance of the comet from the sun.

A 1.0 kg ball is thrown into the air with an initial velocity of 30 m/s. How much kinetic energy does the ball have?

Have scientists discovered a fifth fundamental force of nature?