15) During jogging, the velocity of blood flow is about (100 cm / s) in the aorta. What is the kinetic energy per unit volume of blood? Note that the density of blood is kg / m 1060 5300 m3/J 530.0 KJ/m3 5300 W/m3 530J/m3 530.0 m3/J
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- A student weighs 150 lbs and walks up a set of stairs from the first floor to the second floor of McLane Hall. Determine the average horsepower exerted by the student if it takes 20 seconds to go up the stairs traveling at a constant speed. Assume the second floor is approximately 8.0 m above the first floor. (Recall that the conversion between pounds and newtons is 1 lb = 4.448 N) 0.36 0.12 0.54 1.21 0.7312:45 1 4) A roller coaster of mass 80.0 kg is moving with a speed of 20.0 m/s at position A as shown in the figure. The vertical height above ground level at position A is 200 m. Neglect friction. 200 m 160 m -- Potential Energy 0 A.What is the total mechanical energy of the roller coaster at point A? B. What is the total mechanical energy of the roller coaster at point B? C. What is the speed of the roller coaster at point B? Explain your D. What is the speed of the roller coaster at point C? answerAn object is dropped from a height of 50 m with zero initial velocity. Assuming 5% of the energy is lost to drag, what's the speed of the object when it hits the ground? A 19.4m/s (B) 9.8m/s © 47.5m/s (D 30.5 m/s
- Please answer this question in detail, Don't use chatgpt.A railroad locomotive accelerates a 95,000-kg railcar from 10 m/s to 25 m/s in 90 seconds. What was the average power transferred to the boxcar during this process? 25 MW 280 kW 330 kW 2.3 MW 48 kWA 0.30 kg object travels from point A to point B. If the speed of the object at point A is 8.0 m/s and the kinetic energy at point B is 8.0 J, determine the following. (a) the kinetic energy (in J) of the object at point A J (b) the speed (in m/s) of the object at point B
- 7. A crate of mass 10.0 kg is pulled up a rough incline with an initial speed of 1.50 m/s. The pulling force is 100 N parallel to the incline, which makes an angle of 20.0° T with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled 5.00 m. (a) How much work is done by the gravitational force on the crate? (b) Determine the increase in internal energy of the crate- incline system owing to friction. (c) How much work is done by the 100-N force on the crate? (d) What is the change in kinetic energy of the crate? (e) What is the speed of the crate after being pulled 5.00 m?A 2.35-kg object initially at rest has a gravitational potential energy of 74.6 J. Determine the speed of the object when it has moved under the influence of gravity to a location where its gravitational potential energy is 50.0 J. m/sStrictly don't use chatgpt. I need a handwritten solution only
- The driver of a 760.0 kg car decides to double the speed from 21.1 m/s to 42.2 m/s. What effect would this have on the amount of work required to stop the car, that is, on the kinetic energy of the car? KE x 105 J KE = × 105 J (select) v times as much work must be done to stop the car.1 Name: I I. A person's heart and head are 1.3 m and 1.8 m above the feet, repectively. Determine the potential energy of 0.5 kg of blood in the heart relative to (a) the feet, (b) the head. 1 I I I I I | I I I I I IA 2.30-kg object initially at rest has a gravitational potential energy of 74.0 J. Determine the speed of the object when it has moved under the influence of gravity to a location where its gravitational potential energy is 50.0 J. m/s