The mass of a subway car and it's passengers is 40,000 kg. if it's acceleration as it leaves the station is 0.9 m/s^2, what is the net force acting on it?
A bowling ball rolls off the edge of a cliff, moving horizontally at 20 m/s. I have to plot the position of the bowling ball on an x y axis for every one second. X is horizontal distance and Y is vertical distance on the graph. We are using 10 m/s squared for gravity instead of 9.8 m/s squared.
A cell phone charger uses 4.83 joules per second when plugged into an outlet, but only 1.31 joules per second actually goes into the cell phone battery. The remaining joules are lost as heat. That’s why the battery feels warm after it has been charging for a while. How efficient is the charger?
A crane does 62,500 joules of work to lift a boulder a distance of 25.0 meters. How much did the boulder weigh?
The weight of an object is the product of its mass, m , and the acceleration of gravity, g (where g=9.8 m/s 2 ). If an object’s mass is m=10. kg , what is its weight?
An orbital is defined as a region of the most probable location of an electron a neutron a nucleus a proton
What profession is most likely to make use of amperes and candelas a.nurse b.marine biolaginst c. eletrical engeneer d. althletic coach
