6. A person is rolling their suitcase behind them at an angle of 23 degrees with the floor. The suitcase is pulled 5.0 meters forward. a) What is the work done on the suitcase? b) Suppose the suitcase is pulled for 7.5 seconds, what would be the power from the person? 7. Jenny is pulling a toboggan up an incline of 20 degrees with a force of 15 Newtons. How much work is done if the length of the incline is 5 meters? 8. A 65kg hiker climbs to the top of a 752m high mountain. a) How much work did the hiker do? b) If the path taken by the hiker covers a distance of 1650m, what average force was exerted by the hiker? Gravitational Potential Energy & Kinetic Energy 1. A hoist in an automobile service center raises a 1600kg car 1.8m off the floor. a) Calculate the car's gravitational potential energy relative to the floor. b) How much work did the hoist do on the car to raise it? Ignore friction. 2. A roast of beef in a refrigerator's freezer compartment has a potential energy of 35J relative to the floor. If the roast is 1.7m above the floor, what is the mass of the roast?

In the process of using the scientific method, a researcher: O Directly tests both the null and alternative hypotheses. O Directly tests only the alternative hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because this is the hypothesis of interest. O Directly tests only the null hypothesis because the null hypothesis leads to a specific prediction that can be compared with data. O Can not directly test either hypothesis.

Block A rests on a horizontal tabletop. A light horizontal rope is attached to it and passes over a pulley, and block B is suspended from the free end of the rope. The light rope that connects the two blocks does not slip over the surface of thè pulley (radius 0.080 m) because the pulley rotates on a frictionless axle. The horizontal surface on which block A (mass 3.70 kg) moves is frictionless. The system is released from rest, and block B (mass 6.00 kg) moves Part A What is the tension force that the rope exerts on block B? downward 1.80 m in 2.00 s. Express your answer with the appropriate units. HÁ TB = Value Units Submit Request Answer Part B What is the tension force that the rope exerts on block A? Express your answer with the appropriate units. HẢ 王新 TA= Value Units

Please answer the following question(s): 1. Calculate the angle a person needs to lean from the vertical when 1. walking a 17 m (radius) circular track at 22 mins per mile, and Enter to 2 significant figures Angle with respect to the vertical = = 2. running at 4 min per mile. Enter to 2 significant figures Angle with respect to the vertical = Use 1 mile = 1609.4 m ✓ O O

use guess method as mention below if you cant use it dont do the question at all please do it in guss method no other way    Solving problems in Physics, we must always use GUESS method.Guess stands for: Guess: G Here you write down what is given in the questionUnknown: U Here you list what you have to calculate, to solve for.Equations: E here you list all the formulas you need to use to solve the problemSubstitution: S This first letter S in the word, you will just substitute what is given in theformula. You do not calculate anything. The calculations will occur at the second S: Solve. Whatis very important here is to carry with you the units of measure in the formula. Not only thenumbers. This is very important, once again.Solve: S The last step, second S, you will solve what you plugged in the first S for Substitution.Very important here is to manipulate the units of measure such that the final units of measureto be proved by your work. This part is very important, since you will…

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For this problem, we want to estimate the answer, so our assumptions may be a little unrealistic. Suppose we want to estimate how much air we need to send to a space station, assuming we cannot recycle air. Suppose four astronauts are in a spherical space station. If each of them typically breathes about 500 cm³of air with each breathe, and take 15 breathes per minute (average resting value): a. What is the volume of air you would need in the space station if these four astronauts stayed for a full year? b. If the density of air is 1.25 kg/m³ and it costs (thanks to SpaceX) a mere $100/kg to send objects to the space station, how much money would the astronaut air supply cost?

S Can 6 PAR к Торс K Unit K In x K Moti = Cop K Unit S Spee S Topo S Math Micr eb.kamihq.com/web/viewer.html?source-filepicker&document_identifier=137VZR5BZOVSAIMOA55WU555_CvJ9NacO + 100 P e Interpreting Graphs Answer the questions following the graphs on each side Dietance va. Time 2 7 10 11 12 13 14 Time in soconds 1. From 1 second to 2 seconds, how fast is the object traveling. (Take the difference in distance and divide it by the time in between the 2 distances) 2. Is the object going as fast between 9 and 12 seconds as it is between 1 and 4 seconds? How can you tell? 3. What is the motion of the object between 4 and 6 seconds? acer

Resume Builder · Resume.io E Can't Buy Time - Google Docs X E Fitness Plan #1 (February. 21s X b Vverify Email | bartleby Get Homework Help With Ch X + docs.google.com/document/d/1pQhEBaWXYWxTk327EPalSjdDio91Zaf8RIghg92dlXw/edit?pli=1 Q Paused Can't Buy Time * A @ Saved to Drive Share File Edit View Insert Format Tools Add-ons Help Last edit was seconds ago + BI U A 三 = 三 100% Normal text Arial 19 Editing 31 1 | 3 7. How close would two stationary electrons have to be positioned so that their total mass is 5 times what it is when the electrons are very far apart? 3. | > 9:26 AM O Type here to search 后 5/7/2021 !!! 近 9

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