A moving sidewalk has a velocity of 1.7m/s north. if a man walks 1.1m/s, how long does it take him to travel 15m north in relation to a stationary observer?

a. 15.9s

b. 13.6s

c. 14.8s

d. 25.0s

What is the force that acts in an upward direction, against the force of gravity, so it makes an object feel lighter?

A fighter jet accelerates from 10 m/s to 75 m/s in 7.0 s. The acceleration of the jet is

The New England Merchants Bank Building in Boston is 152m high. On windy days it sways with a frequency of 0.19Hz, and the acceleration of the top of the building can reach 2.3% of the free-fall acceleration, enough to cause discomfort for occupants.

What is the term for the positive charge in an atom? A. Proton B. Electron C. Nucleus D. Fulcrum F. Disequilibrium

Two capacitors C1 and C2 are charged to 120V and 200V respectively. It is found that by connecting them together the potential on each one can be made zero. Then what is the relation between C1 and C2

If a force of 40 newtons moves a cart a distance of 9 meters, the work done is Nm. If the same force moves the same cart three times that distance, the work done is Nm. NextReset

1. Identify this mystery element: I am very reactive, I desperately want to get rid of my electron. When I make a compound with Chlorine it is table salt. Who am I? 2. Identify this mystery element. I am amazing and have no cares in the world.

Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ? 1. location where they are formed 2. time they are formed 3. luminosity they are formed with 4. mass they are formed with 5.

What primarily involves heat transfer by convection?

Each of the following lists two facts. which pair can be used with newton's version of kepler's third law to determine the mass of the sun? each of the following lists two facts.