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- Integrated Concepts The 70.0-kg swimmer in Figure 7.44 starts a race with an initial velocity of 1.25 m/s and exerts an average force of 80.0 N backward with his arms during each 1.80 m long stroke. (a) What is his initial acceleration if water resistance is 45.0 N? (b) What is the subsequent average resistance force from the water during the 5.00 s it takes him to reach his top velocity of 2.50 m/s? (c) Discuss whether water resistance seems to increase linearly with velocity.Fariya, a 53 kg female was instructed by the trainer to perform exercise on cycle ergometer with a resistance of 2 kg, 4 m.rev-1 for 10 minutes and 60 revolutions in a minute. Calculate the total work done and power generated by this exercise.A 2.64-kg steel ball is dropped from a plane to an ocean. If the velocity of the ball just before reaching the water is 2.8 m/s and if the resistance in the water is 2.03v, what is the velocity of the steel ball 9 seconds into the water? Answer in four decimal places.
- OO O O Question 11 Q Zoom Q Review / v Finis ABC O Question 11 Luisa used a claw hammer to remove nails from a piece of wood she wants to paint. What is the effort distance for a claw hammer if the resistance distance is 6.0 cm and the mechanical advantage is 6.0? A 24 27 30 36 O Time Remaining: 1 hour. 3 minutes OzueiIluminate EducationTM, Inc. 000 12:44 hp C esc 23 2$ 8. 9. 6 7The connected load of a consumer is 2 kW and his maximum demand is 1.5 kW. The load factor of the consumer is:11. In compounding a prescription, a pharmacist weighed 0.05 g of a substance on a balance insensitive to quantities smaller than 0.004 g. What was the maximum potential error in terms of percentage?
- An ice cube is placed in a microwave oven. Suppose theoven delivers 105 W of power to the ice cube and that it takes32,200 J to melt it. How much time does it take for the ice cubeto melt?If an individual wants a work rate of 1400 kg m/min with a cycling speed of 350 m/min, how much resistance is needed?I am stuck on how to do this problem.
- Mark en John laai identiese kaste op die bak van 'n vragmotor. Alex lig sy kabinet reguit op vanaf die grond tot op die vragmotor, terwyl John sy kabinet teen 'n growwe skuinste opstoot na die vragmotor. Watter stelling is waar? Mark and John are loading identical cabinets unto the back of a truck. Alex lifts his cabinet straight up from the ground to the truck, whereas John slides his cabinet up a rough ramp to the truck. Which statement is true? Select one: O a. Nie een van hierdie stellings is noodwendig waar nie, want die wrywing is onbekend. / None of these statements are necessarily true because the friction is unknown. O b. O c. O d. Alex doen meer werk as John. / Alex does more work than John. John doen meer werk as Alex. / John does more work than Alex. Alex en John doen dieselfde hoeveelheid werk. / Alex and John do the same amount of work. O e. Nie een van hierdie stellings is noodwendig waar nie, want die hoek van die helling is onbekend. / None of these statements are…An object with mass 54kg has an initial downward velocity of -39. Assume that the atmosphere exerts a S m resistive force with magnitude proportional to the speed. The resistance is -60N when the velocity is -4- S . Use g = 10 m s² a. Write out a differential equation in terms of the velocity v, and acceleration a b. Find the velocity v(t) for the object c. Upload a document with the work for parts a and b and a solution curve. Choose File No file chosen d. Interpret the solution by describing what happends to the object. Include the initial conditions and end behavior for the solution found in part b in your explanation.All the following are units of power except а. hр b. watt С. J/s d. N.m/s e. kg.m/s^2