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

Who created dogs human nature wolfs nobody

A rock is dropped from a height of 2.5 meters. What is it's velocity when it reaches the ground? 3.5 meters/second

A beam of electromagnetic radiation has a wavelength of 1m. What part of the spectrum is this beam from?

8. The velocity of a car reduces from 30 km/h to 5 km/h as the car approaches a stop sign. This is an example of (positive / negative) acceleration. (circle the correct answer from the parenthesis)

A longitudinal wave moves energy that is to the direction of the wave's movement.

8. A gas is contained in a horizontal piston-cylinder apparatus at a pressure of 350 kPa and a volume of 0.02 m3. Determine the work done by the piston on the gas if the cylinder volume is increased to 0.15 m3 through heating.

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

The hinge at A and cable BDC support beam ABC. Cable BDC passes over the pulley D that is pinned to the ceiling. (Assume that the + x-axis is to the right and the + y-axis is up along the page.

The "zone of avoidance" a) Accounts for the absence of any planet between the orbits of Mars and Jupiter Prevents collisions between planets in the Solar System.

Electric current is ...