0.5 kg counter-mass pan R After the counter-mass was added the beam turned. a) State the direction the beam turned after the counter-mass was added. b) Calculate the moment of force, about the pivot, that causes the beam to turn. Show your working and state the unit. c) A customer selects tomatoes and adds them to pan R. To balance the beam, the costumer moves pan R so that it is suspended 16 cm from the pivot. Calculate the mass of the tomatoes. a) State what is meant by the term moment of a force about a point. b) The figure below shows a gate of a farm. Source: NSSCO Physical Science Paper 2 20​

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

10 points! will mark brainiest! in a heat engine if 1,000 j of heat enters the system and the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2,000 j 1: write the equation2: list out your known variables 3: plug the numbers into the equations 4: solve 5: write your solution statement that includes initial energy and final energy added you so much!

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.