19. A uniform metre rule is pivoted at the centre is balanced by four suspended forces as shown in the figure below. Calculate the force exerted in the 60 cm mark

Aquantity of gas has a volume of 1.5 m3 and an absolute pressure of 95 kpa. when the gas is compressed to a volume of 0.5 m3, what is the new absolute pressure of the gas? (assume that there’s no change in temperature.)

A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form