A suitcase is pulled 28 feet along a flat sidewalk with a constant upward force of 80 lb at an angle of 23degrees with the horizontal. Calculate the work done.

Which of the following statements is untrue in regard to sound traveling in air? A. During a single vibration of the diaphragm, molecules in the air near it will also complete one vibration. B.

a bird has a mass of 0.2kg and is flying 10m above the ground with a speed of 7 m/s. What is the total mechanical energy of the bird?

Suppose a ball had a potential energy of 5 J when you dropped it. What would be it's kinetic energy just as it hit the ground?

Which represent correct variations of the formula for speed?

Suppose a 1,500 kg speedboat is traveling with a velocity of 13 m/s. What is the speedboat's momentum?

The mass of a lift is 600kg. the maximum tensile force that the cable supporting the lift can withstand is 7kN. Calculate:maximum upwards acceleration allowed?

In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between the variable is a (n) ?

What color does Indigo turn things?

Why is temperature a good criterion for searching for earth like exoplanets

Supercells are updrafts that may cause which of the following? A hurricanes b blizzards c thunderstorms d tornadoes i think its Thunderstorms or tornadoes