A client weighs 201 lb (91.5 kg) and has a maximum aerobic power of 40.7 mL/kg/min. What exercise intensity (power output) on a cycle ergometer will enable him to maintain a target training intensity of 7.9 METS? 950 kg-m/min 1050 kg-m/min 1150 kg-m/min 1250 kg-m/min
Q: A 1.50 x 103-kg car starts from rest and accelerates uniformly to 19.2 m/s in 11.7 s. Assume that…
A: Kinematics.
Q: 1. For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m…
A:
Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…
A: Input energy, Ein=5.1×10-20J Displacement, d=10nm=10×10-9m Force, F=1.0pN=1.0×10-12N
Q: An 69 kg Man runs upstairs and reaches 9m height for 13 s. What is his power? Use g=9.8m/s2
A: Power is defined as energy consumed per unit time, P=Et (I)…
Q: A car with mass of 1087 kg accelerates from 0 m/s to 40.0 m/s in 10.0 s. Ignore air resistance. The…
A: Average mechanical power output of the engine is equal to the change in the kinetic energy of the…
Q: The basis of muscle action is the power stroke of the myosin protein pulling on an actin filament.…
A: Given: displacement, S = 10 nm = 10 × 10-9 m = 10-8 m force, F = 1.0 pN = 10-12 N Energy input, E…
Q: An energy-efficient lightbulb, taking in 26.0 W of power, can produce the same level of brightness…
A: Power consumed by the energy-efficient light bulb = 26.0 W Energy consumed in one hour E26=26×3600…
Q: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body…
A:
Q: (c) The work done by friction is O positive. O negative.
A:
Q: The figure below shows a person pushing a box with a force of 8.2 N over a displacement of 8.7 m.…
A: Given that:- Force(F)=8.2 N and Displacement(d)=8.7 m Time(t)=5.0 s Work…
Q: Assume that before the accident happened, the car was going at a constant velocity of 60Km/h on a…
A:
Q: A motorist driving a 147-kg car on level ground accelerates from 20.0 m/s in a time of 5.00 s.…
A: The kinetic energy of the car is, KE=12mv2KE=12147 kg20.0 m/s2KE=29400 J
Q: Don't use chat gpt
A: We can solve this problem using the principle of conservation of mechanical energy, which states…
Q: How much work must be done on a heavy object to lower it from a height where it has 4000 Jof GPE to…
A: Initial gravitational potential energy = 4000 J Final gravitational potential energy = 2200 J…
Q: Which of the following statements are true? Select all correct. Question 3 options: Energy…
A: Energy has units of Joules, which can be written as kg m/s2. statement is incorrect.Joule is unit of…
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A:
Q: Jacob is riding his bike down a tall hill. At the top of the hill, he has 2800J of potential energy.…
A: Whether the total amount of energy at the top is equal to the total amount of energy at the bottom…
Q: A 1.5 Kg ball at initial altitude of 0.0 m is trough upward with an initial speed of 10.0 m/s What…
A: Given data: Mass (m) = 1.5 kg Initial altitude (h) = 0.0 m Initial Speed (v) = 10.0 m/s Required:…
Q: A bicycle and rider going 12 m/s approach a hill. Their total mass is 57 kg. (a) What is their…
A: Given Data : speed of the rider, v = 12 m/s total Mass of the rider and the bicycle, m = 57 kg Since…
Q: A 7.80-g bullet moving at 500 m/s penetrates a tree trunk to a depth of 5.60 cm. (a) Use work and…
A: Given, Mass of bullet m = 7.80 g = 7.80 x 10-3 Kg Initial velocity u = 500 m/s Distance d = 5.60 cm…
Q: What is the speed of a rollercoster if it weighs 557 kg and produces 118793 J of thermal energy from…
A: Given, mass of rollercoaster is m = 557 kg total thermal energy produced is Q = 118793J Point 1-…
Q: A 46.9 kg teenager climbs stair to exercise as shown, Δy = 12.0 m. It is completed in 25.0 s. What…
A: Given: The mass of the student is 46.9 kg. The vertical displacement is 12 m. The time interval is…
Q: If a 1300 kg car can accelerate from 35 km/h to 60 km/h in 3.6 s, how long will it take to…
A: The objective of the question is to find out the time it would take for a car to accelerate from 60…
Q: A 1.000 ´ 103 kg car is moving at 90.0 km/h (25.0 m/s) as it exits a freeway. The driver brakes to…
A: mass = 1000 kg initial speed = 25 m/s final speed = 10 m/s Yes, the work was done by the car…
Q: If a 1300 kg car can accelerate from 35 km/h to 60 km/h in 3.6 s, how long will it take to…
A: The objective of the question is to find out the time it will take for a car to accelerate from 60…
Q: Energy (mJ) 600 400 200 0 Potential energy Kinetic energy Mechanical energy XOXO 5 6 3 4 Time (s) 0…
A: The answer is 'mechanical energy is lost to friction'
Q: A small car and a semi-truck have the same total mechanical energy. Which of the following CANNOT be…
A:
Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1500 kg, which is…
A: Write the given values with suitable variables. M=1500 kgh=60 mt=3.5 min=210 sm=930 kg Here, M, h,…
Q: An airplane of mass 4500 kg is cruising at a speed of 49.0 m/s at an altitude of 175 m. What is its…
A:
Q: 125% + @ Problem 11: The atwood machine shown is released from rest. Using the work-energy theorem,…
A: CONCEPT:
Q: (a) What is the average useful power output of a person who does 6 x 106 J of useful work in 7 hr?…
A: Given data: Work (W) = 6×106 J Time (t) = 7 hr Required: Power (P)
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- A hummingbird hovers by exerting a downward force on the air equal, on average, to its weight. By Newton's third law, the air exerts an upward force of the same magnitude on the bird's wings. Find the average mechanical power (in W) delivered by a 3.60 g hummingbird while hovering if its wings beat 75.0 times per second through a stroke 3.98 cm long. HINT To find the average power per stroke, calculate the work done each stroke and divide by the time per stroke. Click the hint button again to remove this hint.When a cyclist expends 1500 W of power to deliver mechanical energy to her bicycle at a rate of 100 W, find the efficiency of her body. Express your answer as a percentage.A crate is given a push across a horizontal surface. The crate has a mass m, the push gives it an initial speed of 3.60 m/s, and the coefficient of kinetic friction between the crate and the surface is 0.130. (a) Use energy considerations to find the distance (in m) the crate moves before it stops. ____m (b) What If? Determine the stopping distance (in m) for the crate if its initial speed is doubled to 7.20m/s. ____m
- What average mechanical power (W) must a 76.5kg mountain climber generate to climb to the summit of a hill of height 405 m in 46.0 min? Due to in converting chemical energy to mechanical energy, the amount calculated here is only a fraction of the power that must be produced by the climber's bodySuppose you were able to convert the energy used by light bulbs into kinetic mechanical energy that move objects. If you burnt a 60.0 W for 2.500 hours, how far could an object be pulled if a force of 5.0x103 N is supplied?The roller coaster has a PE of 10,000 J when it begins its downhill run. How much total energy does it have when it is halfway down the hill? Which answer below is correct 10,000 J 5,000 J 10,000 N 5,000 N
- You serve a volley ball with a mass of 2.1kg. The ball leaves your hand at 30m/s. The ball has _______ energy. Calculate it.A motorist driving a 1332-kg car on level ground accelerates from 20.0 m/s to 30.0 m/s in a time of 5.00 s. Ignoring friction and air resistance, determine the average mechanical power in watts the engine must supply during this time interval.Isn't there a way to solve this by only using the work and energy? W = F(Delta X) W = 1/2mv_{final}^2-1/2mv_{initial}^2 Potential Energy = MGH I understand how to solve this with regular FBD and newtons laws. I want to see the way to solve it using work and energy.
- Question 12 ( A bullet penetrates a wooden block and loses its velocity by a half. What is the relation between the initial kinetic energy of the bullet and kinetic energy when the bullet leaves the block? Ek₁ = 1/2 Ekf Eki 1/1 Ekf Eki Ekf = • Eki Ek || Eki OEM=1 - Ekf 27/173 - ✓ Saved 16 1Answer both or NONE question 1 - For exercise, an athlete lifts a barbell that weighs 400 N from the ground to a height of 2.20 m at a constant speed in a time of 1.60 s. What is the metabolic power, in kW (kiloWatts)? Your answer needs to have 2 significant figure, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement. Question 2 - The metabolic power for typing is 150 W for Lili, not a lot as you know probably. How long does it take to burn off the energy in a slice of apple pie, which energy content is 1680 kJ (400 food calorie), in minutes? (Try to stay active, working/studying in front of a computer is not the best exercise you can do for your body.)Practice 1. Which of the following represents the relationship between work, power, and time? Choices P = W/t W = P/t P = W×t t = W×P 2. A machine does 2500 J of work in 1 min. What is the power developed by the machine? Choices 21 W 42 W 150 W 2500 W 3. What is the average power output of a weightlifter who can lift 250 kg weights 2.0 m in 2.0 s? Choices 2.5 kW 5.0 × 102 W 4.9 kW 9.8 kW