When hoisting a personnel platform which of the following need not be engaged when they occupied platform is in a stationary position?

Calculate the coefficient of friction of a 12kg object that has a force of friction of 3N

Which lists types of materials from most conductive to least conductive? A. insulator, semiconductor, conductor, superconductor B. superconductor, conductor, semiconductor, insulator C. conductor, insulator, semiconductor, superconductor D.

Your code returns a number of 99.123456789 + 0.00455679 for your calculation. How should you report it in your lab write-up?

A sample of copper has a volume of 23.4 cm3. if the density of copper is 8.9 g/cm3, what is the coppers mass

What is the efficiency of a tractor that has a work output of 300j and a work input of 400j

Why do space suits need to be pressurized?

Why do comets have tails?

The main characteristic of all vertebrates is the presence of a. cartilage b. a large brain c. a backbone d. an exoskeleton I got it. The answer was B

A projectile is thrown upward so that its distance above the ground after t seconds is h (t) equals negative 16 t squared plus 704 t. a) Find the maximum height the object reaches. b) Find the time it takes the object to reach the ground.

You are standing 100 meters from an object emitting a sound of constant intensity (loudness). You walk toward the source of sound until you are 20 meters from it. From your perspective, what has happened to the intensity of the sound?