Whta is the mechanical advantage when the effort force is 20 and the resistance force is 5

When an effervescent tablet is dropped in water, what indicates that a chemical change is occurring? a. the evolution of a gas b. the condensation of a gas c. the melting of a solid d. the subliming of a solid

What is the length of the hypotenuse of a right triangle, whose legs have lengths of 12 meters and 35 meters?

Keeping in mind that the kenetic energy of a moving vehicle, how can a driver best prepare to enter sharp curves in a railroad?

Monochromatic light is incident on a grating that is 75 mm wide and ruled with 50,000 lines. The second-order maximum is seen at 32.5°. What is the wavelength of the incident light? 202 nm 605 nm 806 nm 403 nm 452 nm

a brass rod is. 500 m long at 20.0celsius. what is the length of the rod if it is heated to 50.0 celsius

A shark travels with an average velocity of 12 m/s s. How long (time) would it take the shark to swim 42 m at that velocity

When a high-mass main sequence star runs out of both hydrogen and helium in its core, the core begins to fuse

Is there a definite end to our atmosphere?

Based on the second law of thermodynamics, how would you expect a system to change over time? A. It would become more organized B. Its randomness would increase C. It would become more efficient D. Its energy would increase

Susan works 8 hours a day and makes $7.00 per hour. How much money does Susan earn in one week if she works 5 days per week?