By the time she managed/had managed to open the door, the postman already went/had already gone.

A ramp is 3.0 meters long and 1.5 meters high. The distant of the effort, therefore, is the length of the ramp and the resistance distance is the height of the ramp. If it takes 60.

In raising a 3000-n with a pulley system, it is noted that for every 2 m of rope pulled down, the rises 0.2 m. ideally, what force is needed to lift the? a 150 n

When condensation rates decrease, causing fewer clouds to form, how might humans change their behavior?

A car in front of the school goes from rest to 5.6 m/s in 3 seconds. What is its acceleration?

A 63.6-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.613 and 0.402, respectively.

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.