During a tornado, the windspeed outside of a home is much greater than the windspeed inside the same home. As a result, the house explodes. This phenomenon can be best explained by using

What is condition for conservation of momentum in a system? The total initial momentum must be zero The total final momentum must be zero Momentum is always conserved Momentum is never conserved None of these

Problem 9 A boxcar of length 9.9 m and height 2.4 M is at rest on frictionless rails. Inside the boxcar (whose mass when empty is 3000 kg) a tank containing 1700 kg of water is located at the left end. The tank is 1.1 m long and 2.4 m tall. At some point the walls of the tank start to leak, and the water fills the floor of the boxcar uniformly. Assume that all the water stays in the boxcar. After all the water has leaked out what will be the final velocity of the boxcar? (Take movement to the right as positive. Assume that the mass of the boxcar is evenly distributed.) Submit Answer Tries 0/8 What is the displacement of the boxcar 6 S after the water has settled in the bottom. (Take positive displacement as being to the right.) Submit Answer Tries 0/8

In the ammonia (NH3) molecule of the figure, three hydrogen (H) atoms form an equilateral triangle, with the center of the triangle at distance d = 9.40 × 10−11 m from each hydrogen atom. The nitrogen (N) atom is at the apex of a pyramid, with the three hydrogen atoms forming the base. The nitrogen-to-hydrogen atomic mass ratio is 13.9, and the nitrogen-to-hydrogen distance is L = 10.14 × 10-11 m. What are the (a) x and (b) y coordinates of the molecule's center of mass? (a) Number Units (b) Number N L HO H d H This answer has no units Units This answer has no units

Strictly don't use chat gpt. If you give a Chatgpt answer i will report

Find the center of mass of a laminate bounded by y=−x,y=x,y=2 with variable density modeled by \rho (x,y)=y+5. Question 3 Answer a. (0,2619) b. (35,94) c. (−23,116) d. None of the above e. (0,1) f. (0,32)

An airplane has wings, each with area 3.85 m2, designed so that air flows over the top of the wing at 248 m/s and underneath the wing at 226 m/s.   Approximately what size wings would an aircraft need on Mars if its engine generates the same differences in speed as in the "Practice It" and the total mass of the craft is 300 kg? The density of air on the surface of Mars is approximately one percent Earth's density at sea level, and the acceleration of gravity on the surface of Mars is about 3.8 m/s2. ______________m2

As a hiker in Glacier National Park, you are looking for a way to keep the bears from getting at your supply of food. You find a campground that is near an outcropping of ice from one of the glaciers. Part of the ice outcropping forms a slope of angle ? up to a vertical cliff. You decide that this is an ideal place to hang your food supply, as the cliff is too tall for a bear to reach it. You put all of your food into a burlap sack, tie an unstretchable rope to the sack, and tie another bag full of rocks to the other end of the rope to act as an anchor. The mass of rocks that you put into the anchor bag is equal to the mass of food in the other bag. What will be the acceleration ? of the food bag when you let go of the anchor bag? Assume that the weight of the rope is negligible, and that the ice can be considered frictionless. Express the resulting acceleration ? of the food bag in terms of ? and ?, the acceleration due to gravity. Let the positive direction for this bag be downwards.

Water is ejected from the water nozzle with a speed vo = 41.7 ft/sec. For what value of the angle will the water land closest to the wall after clearing the top? Neglect the effects of wall thickness and air resistance. What distance x to the right of point B does the water land? Answer: 0 = A X= 10 8 13.3' i i 45' Not to scale ft 6.9' B