How does a fixed pulley act as a machine?

Light of wavelength 441.1 nm falls on two slits spaced 0.29 mm apart. What is the required distance from the slits to the screen if the spacing between the first and second dark fringes is to be 4.0 mm?

Is the specimen that you brought to school a monocot or dico? Give multiple reasons to explain how you know this

How far can Hubble Telescope look into space?

You throw a ball downward from a window at a speed of 2.0m/s. How far has it fallen in 3 seconds?

Which of the following theories states that the sun is the center of the universe? A) Heliocentric theory B) Ptolemaic system C) Geocentric theory D) Boyle's Law

Which best explains the relationship between the speed of sound and the medium through which it passes?

g The magnetic force on a charged particle A. depends on the sign of the charge on the particle. B. depends on the velocity of the particle. C. depends on the magnetic field at the particle's instantaneous position. D.

How fast must a 1000 kg car be moving to have a kinetic energy of 1.0 kWh

Which of the following is used to measure weight? Newtons Liters Kilograms Meters

Intravenous infusions are often made under gravity. At what height should the bottle be placed so the liquid pressure is 700 mm-H2O?