If you push on a heavy box that is at rest, you must exert some force to start its motion. 5. however, once the box is in motion you need a smaller force to maintain that motion. why?

What are the 2 types of electricity

A binary star system in the constellation orion has an angular separation of 10-5 rad. if the wavelength of the light from the system is 500 nm, what is the smallest aperture (diameter) telescope that can just resolve two stars?

How do electromagnetic waves form?

Which units express specific heat capacity?

1. Which of the graphs correctly displays the positions of the motorcycle and car as functions of time? 2. How long does it take from the moment when the motorcycle starts to accelerate until it catches up with the car? In other words, find t2-t1 3.

An impala is an African antelope capable of a remarkable vertical leap. In one recorded leap, a 45 kg impala went into a deep crouch, pushed straight up for 0.21 s, and reached a height of 2.5 m above the ground.

The metric unit of force is the Newton (N), which is kg∙m/s^2. Convert 10 mg∙cm/s^2 to Newtons. Be careful when working with units. A. 1 x 10^-2 N B. 1 x 10^-5 N C. 1 x 10^-6 N D. 1 x 10^-7 N

Which of the following aspects of the environmental movement addresses the public's right to intervene in environmentally damaging activities on private land?

A mine elevator is supported by a single steel cable 0.0125 m in diameter. The total mass of the elevator cage and occupants is 6450 kg. By how much does the cable stretch when the elevator hangs by 362 m of cable? (Neglect the mass of the cable.

What scientific practice is this? 1) collecting data 2) asking a question 3) providing explanations 4) communicating results