4. The pressure exerted by the atmosphere is about 1.0times 10^5 Pa. Convert to kPa. 5.A 75-kg solid cylinder, 2.5 m long and with an end radius of 5.0 cm, stands on one

4. To convert pressure from Pa to kPa, we need to divide the pressure in Pa by 1000. So, the pressure exerted by the atmosphere in kPa is:<br /><br />$1.0\times 10^{5}$ Pa / 1000 = 100 kPa<br /><br />5. To find the weight of the solid cylinder, we need to calculate its volume and then multiply it by the density of the material and the acceleration due to gravity.<br /><br />The volume of a cylinder is given by the formula: $V = \pi r^2 h$, where $r$ is the radius and $h$ is the height.<br /><br />Given that the end radius is 5.0 cm, we need to convert it to meters: 5.0 cm = 0.05 m.<br /><br />Now, we can calculate the volume of the cylinder:<br /><br />$V = \pi (0.05)^2 \times 2.5 = 0.00785$ m³<br /><br />Assuming the density of the material is 7850 kg/m³ (typical for steel), and the acceleration due to gravity is 9.81 m/s², we can calculate the weight of the cylinder:<br /><br />Weight = mass × acceleration due to gravity<br />Weight = 75 kg × 9.81 m/s² = 735.75 N<br /><br />Therefore, the weight of the solid cylinder is 735.75 N.