If P(A) = 0.6, P(B) = 0.3, and P(A ∩ B) = 0.2, then P(B | A) = _____.

If P(A) = 0.80, P(B) = 0.65, and P(A ∩ B) = 0.78, then P(B | A ) = _____.

A piano mover raises a 1000-N piano at a constant speed using a very light rope in a frictionless pulley system, as shown in the figure. With what force is the mover pulling down on the rope?

A block slides down a frictionless inclined ramp and experiences no significant air resistance. If the ramp angle is 17.0° above the horizontal and the length of the surface of the ramp is find the speed of the block as it reaches the bottom of the ramp, assuming it started sliding from rest at the top.

Which ratio below would best represent a 2.50 M aqueous KCl solution?

2.1 Zingaki izingane ozibona kule khathuni? Bhala ngesiZulu. (2)

A 20-g bead is attached to a light 120-cm-long string as shown in the figure. This bead moves in a horizontal circle with a constant speed of 1.5 m/s. What is the tension in the string if the angle α is measured to be 25°?

A stone is moving on a rough level surface. It has 24 J of kinetic energy, and the friction force on it is a constant 0.50 N. What is the maximum distance it can slide?

4.2 Tomula izihlanganiso ezinhlanu ezikhona esiqeshini esingenhla. (5)

For this question, answer it on your work paper. In the box below, type “complete” when finished. Make sure to show all of your work. Consider the following reaction: 4 CO2 (g) + 2 H2O (l) → 2 C2H2 (g) + 5 O2 (g)   Using the Standard Thermodynamics Properties Table a. Calculate