On a sunny day, solar energy reaches earth at a rate of 4.0 . suppose a house has a square, flat roof of dimensions 10. m by 10. m. calculate how much solar energy reaches this roof in 1.0 h. (note: this is why roofs painted with light-reflecting paint keep buildings cooler than black, unpainted roofs. the painted roofs reflect most of this energy rather than absorb it.)

What precautions should you take to prevent injuries when dealing with heavy loads?

Afour cylinder four-stroke in-line engine has a stroke of 160mm, connecting rod length of 150mm, a reciprocating mass of 3kg and its firing order is 1-3-4-2. the spacing between cylinders is 100mm. i. show that the engine is in balance with regard to the primary inertia forces and primary 3. a and secondary inertia couples. li determine the out of balance secondary inertia force ii. propose ways of balancing this out of balance force and discuss the challenges that will arise

Manometers are good examples of measuring instruments, nowadays they are not as common as before. a)-capacitive probe gauges b)-gravitational gauges deformation ) gauges d)-digital gauges