The cantilever footing is used to support a wall near its edge a so that it causes a uniform soil pressure under the footing. determine the uniform distribution loads, wa and wb, measured in lb/ft at pads a and b, necessary to support the wall forces of 4,000 lb and 20,000 lb
Two compact sources of sound oscillate in phase with a frequency of 130 hz where the speed of sound is 340 m/s. at a point that is 3.40 meters from one source and 3.87 meters from the other, the amplitude of the sound from each source separately is a.
The tractor-trailer unit is moving down the incline with a speed of 5 mi/hr when the driver brakes the tractor to a stop in a distance of 4 ft. estimate the percent increase n in the hitch-force component which is parallel to the incline, compared with the force present at steady speed. the cart and […]
Water is being heated in a closed pan on top of a range while being stirred by a paddle wheel. during the process, 30 kj of heat is transferred to the water, and 5 kj of heat is lost to the surrounding air. the paddle-wheel work amounts to 500 n · m. determine the final […]
A helicopter is traveling at 86km/h at an angle of 35° to the ground. what is the value of Ax and Ay?
Robby skateboards 0.50 blocks to his friends house in 1.2 minutes. what is his speed/9366704/aa0c54ad?utm_source=registration
A bicycle tire has a pressure of 6.00 ✕ 105 N/m2 at a temperature of 20.0°C and contains 1.90 L of gas. What will its pressure be (in Pa) if you let out an amount of air that has a volume of 150 cm3 at atmospheric pressure? Assume tire temperature and volume remain constant.
Potassium chlorate decomposes to produce 20 g of solid potassium chloride. Oxygen gas is also produced. Which best describes the mass of oxygen? It is more than the mass of potassium chloride. It is less than the mass of potassium chlorate. It equals the mass of potassium chlorate. It equals the mass of potassium chloride.
Increase of green house gases, due to human activity, is warming the oceans. This causes changes in climate. Name three Earth spheres which interact in this process. Justify your answer.
Lizzie loves to stargaze at night. She has noticed that the moon appears to change shape over the course of the month, and she wants to investigate why this happens. She hypothesizes that the relationship of the sun, Earth, and moon creates shadows on the moon. She sets up an experiment with a lightbulb to […]
