Hello i need help with the following questions please and thank you.

Content X = Ch. 7 Problems - University Physi X + V X C openstax.org/books/university-physics-volume-1/pages/7-problems Q Pearson Course 0 CCRI Outlook Courses MyCCRI Scilab Topics NoodleTools - Projex.. CENGAGE Calc 2 OnShape Pomodoro Timer O... Other bookmarks cord by 16.7 m, determine the value of the constant a. 42. A particle moving in the xy-plane is subject to a force F (x, y) = (50 N/m) (xi+ C. 3m where x and y are in meters. Calculate the work done on the particle by this force, as it moves in a straight line from the point (3 m, 4 m) to the point (6 m, 8 m). 43. A particle moves along a curved path y(x) = (10 m) {1 + cos[(0.1m )x] }, from x = 0 to x = 107 m, subject to a tangential force of variable magnitude F(x) = (10 N)sin[(0.1 m )x]. How much work does the force do? (Hint: Consult a table of integrals or use a numerical integration program.) 7.2 Kinetic Energy. 44. Compare the kinetic energy of a 20,000-kg truck moving at 110 km/h with that of an 80.0-kg astronaut in orbit moving at 27,500 km/h. 45. (a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter runningContent X = Ch. 7 Problems - University Physi X + V X F C openstax.org/books/university-physics-volume-1/pages/7-problems Pearson Course CCRI Outlook Courses MyCCRI Scilab Topics NoodleTools - Projex.. CENGAGE Calc 2 OnShape Pomodoro Timer O... Other bookmarks 69. A large household air conditioner may consume 15.0 KW of power. What is the cost of operating this air conditioner 3.00 h per day for 30.0 d if the cost of electricity is $0.110 per kW . h? the average cower consum tion in we of an app ance that us $ 5.00 k W. of energy per mar indio of energy do's this appliance con me in a he average useful at do this takes 7.30 73 (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp equals 746 W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m high hill in the process