19. A gas of pressure 2Nm^-2 and temperature 37^circ C is heated to goo at constant volume Calculate the new pressure. A. 4.3Nm^-2 B. 2.3Nm^-2 C. 1.7Nm^-2 D. 0.9Nm^-2 E. 0.4Nm^-2 20. Electric charges on the surface of a conductor would be evenly distributed if the shape of the conductor is A. conical. B. cuboidal. C. cylindrical D. elliptical. E. spherical

# Explanation:## Step 1: Identify the Initial and Final Conditions### The initial pressure ( ) is and the initial temperature ( ) is , which is (since ). The final temperature ( ) is not specified but is implied to be higher. The volume is constant.## Step 2: Apply the Ideal Gas Law for Constant Volume### Using the formula , solve for the new pressure . Since is not given, assume it is heated to a higher temperature. Let's assume for calculation purposes.## Step 3: Calculate the New Pressure### Substitute the values into the formula: . This is close to option A, which is , considering possible rounding or approximation.# Answer:### 19. A. # Explanation:## Step 1: Understand the Distribution of Electric Charges### Electric charges on the surface of a conductor distribute themselves to minimize repulsion. This distribution is uniform if the conductor's shape allows for equal spacing.## Step 2: Identify the Shape for Uniform Distribution### A spherical shape allows charges to be evenly distributed because every point on the surface is equidistant from the center, minimizing repulsion uniformly.# Answer:### 20. E. spherical