Two bowling balls each have a mass of 8 kg. if they are 2 m apart, what is the gravitational force between them? g = 6.67 × 10^-11 n⋅(m/kg)^2 a. 3.21 10^-8 n b. 2.14 10^-9 n c. 2.68 10^-10 n d. 1.07 10^-9 n

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?