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Jim is a college wrestler weighing 145 lbf and he decides to wrestle in the 132 lbf weight class for the upcoming season. He plans to start his weight-loss program early so that he can be down to the desired weight by the first practice of the season. To accomplish this, he restricts his food intake to 1000. Calories per day and begins an exercise program consisting of jogging for 20.0 min a day plus 10.0 min of other daily exercises that are equivalent to climbing 20 flights of stairs at 12.0 ft per flight. When he is not exercising, his average energy expenditure rate is 500. Btu/h for the remainder of the 24 h day.
a. What is Jim's total energy expenditure during his 30.0 min workout?
b. Assuming his excess weight is all body fat, how many days before his first wrestling practice must he start the program?
Two 72.0- hockey players skating at 7.00 collide and stick together. If the angle between their initial directions was 135 , what is their speed after the collision
Obtain the wavelength in vacuum for blue light, whose frequency is 6.253 x 1014 Hz. Express your answer in nanometers (1 nm = 10?9 m)
what types of everyday materials have properties of both solids and liquids?what solids may be mistaken for liquids and
A gymnast of mass 62.0 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch.
Susan's 10.0kg baby brother Paul sits on a mat. Susan pulls the mat across the floor using a rope that is angled 30° above the floor. The tension is a constant 32.0N and the coefficient of friction is 0.170. Use work and energy to find Paul's s..
A thin 1.7-m metal rod sustanins a longitudinal standing wave with vibration antinodes at each end of the rod. What is the frequency of the rod's vibration
It collides with a 10,000 kg railway car resting at the bottom of the track with its brakes off. The two cars couple together and roll up the track to a height of h. find out h.
Block B in the figure below rests on a surface for which the static and kinetic coefficients of friction are 0.56 and 0.33, respectively. The ropes are massless. What is the maximum mass of block A for which the system is in equilibrium?
Two converging lenses with focal lengths of 50 cm and 19 cm are 10 cm apart. A 2.4-cm-tall object is 25 cm in front of the 50-cm-focal-length lens. Calculate the distance between the image and 19-cm-focal-length lens. Express your answer to two si..
1. Identify a business research topic 2. Define the research questions for the identified problem or opportunity 3. Select the appropriate research methodologies and techniques to use for the research project
A 3.5 mL syringe has an inner diameter of 5.0 mm, a needle inner diameter of 0.24 mm, and a plunger pad diameter, The nurse empties the syringe in 2.3 s. What is the flow speed of the medicine through the needle
From the local linearizations of ex and sin x near x = 0, write down the local linearization of the function ex sin x. From this result, write down the derivative of ex sin x at x = 0. Using this technique, write down the derivative of ex sin x/(1..
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