A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal. He wants to walk 45 min. at a speed of 3.5 mph. What elevation does he need to set the treadmill to complete this workout?
Q: A magnetic field directed into the page changes with time according to B = 0.031 0+2 + 1.40, where B…
A: The derivation and solution is provided with explanation for clarity.Explanation:
Q: The following table was constructed when trying to calculate the magnetic field from a moving…
A: The following table was constructed when trying to calculate the magnetic field from a moving…
Q: 1 A point mass m, is located a distance x to the left of the origin along the x-axis. A second mass…
A:
Q: Current Attempt in Progress A train at a constant 53.0 km/h moves east for 48.0 min, then in a…
A: Constant speed, v=53.0 km/h Time east=48.0 min East of due North= 25.0 min West=58.0 min
Q: Calcualte the magnetic field strength at point P. The current, I, is 11.0 A, the angle is 23.5° and…
A:
Q: A block of mass m = 600 g is attached to a horizontal spring with a spring constant of k = 3.6 N m¹.…
A: The displacement is given by x=(−0.5exp(−t)+0.3exp(−6t))(S.I units)And the velocity is…
Q: 3. A hunter is standing in a tree stand 15 m off the ground. He shoots his rifle horizontally at a…
A:
Q: A raindrop of mass 3.20 x 10-5 kg falls vertically at constant speed under the influence of gravity…
A: (a) work done on the raindrop by the gravitational force= 2.51×10-2 J(b) work done on the raindrop…
Q: r=1 m r=2m r=3m Indicate over how many squares the sound waves would spread for r = 8 m. squares The…
A:
Q: A 1.90-kg particle has a velocity (2.20 1 - 4.00 ĵ) m/s, and a 4.00-kg particle has a velocity (1.00…
A: a) velocity of center of mass = (1.39i^+4.14j^) m/s. b) Total momentum of the system =…
Q: A runaway semi-truck that has a mass of 35,745 kg travels down a hill at a velocity of 142 km/hr.…
A:
Q: A crate of mass m = 9.7 kg is pulled up a rough incline with an initial speed of v₁ = 1.43 m/s. The…
A: The mass of the crate is The initial speed of the crate is The pulling force is The angle of…
Q: A long solenoid that has 920 turns uniformly distributed over a length of 0.390 m produces a…
A: The current required : I = 33.7 mAExplanation:Approach to solving the question:Detailed…
Q: Need Help? mV Sascha Hahn/Shutterstock.com A helicopter (see figure below) has blades of length 3.40…
A: emf induced between the blade tip and center hub is 4.176 mVExplanation:
Q: The figure shows two rectangular wave pulses on a stretched string traveling toward each other. Each…
A:
Q: Two 0.65 m long parallel wires each have a current of 4.5 flowing in them in the same direction .…
A:
Q: What is the path difference between two green (530 nm) rays that cause the darkest spot between 1st…
A: The objective of this question is to find the path difference between two green rays that cause the…
Q: How can i answer this question?
A: The objective of this question is to find the electromotive force (emf) and the internal resistance…
Q: A track meet is held on a planet in a distant solar system. A shot-putter releases a shot at a point…
A: Solution:-
Q: Two blocks, which can be modeled as point masses, are connected by a massless string which passes…
A:
Q: You pull on a string with a horizontal force of magnitude Fyb = 69 N that is attached to a block of…
A:
Q: A particular thermodynamic cycle acting on a monatomic ideal gas (y = 1.67) includes an isobaric…
A:
Q: A solid sphere, a solid cylinder, a hollow cylinder, and an unopened can of soda, all of the same…
A:
Q: A crate of mass 10 kg starts from rest at the top of a 7 - m-long ramp inclined at 45 deg. The ramp…
A:
Q: A hydrogen gas discharge lamp is used as a coherent light source illuminating N� slits in a barrier…
A:
Q: The figure below shows three regions in space separated by two infinite sheets of charge with…
A:
Q: Ali is pushing a wooden box of weight 78N for 2m on a rough floor using a horizontal force of 120 N.…
A: weight of box = m g = 78 NDisplacement = S = 2 mhorizontal force = F = 120 Ntotal work = W = 190 J
Q: the figure below show light passing through a diverging lens and then through a converging lens…
A: Draw the schematic ray diagram of the lenses.
Q: Compute the velocity of light in periclase (MgO), which has a dielectric constant & of 3.03.
A:
Q: 6. A fixed 14.4 cm diameter coil of wire is perpendicular to a magnetic field of 0.26 T pointing up.…
A: Diameter is Initial magnetic field is pointing upward.The final magnetic field is pointing…
Q: A 0.53-oz model rocket is launched vertically from rest at time t = 0 with a constant thrust of 0.9…
A:
Q: We lay a copper wire in the shape of a 10 cm square loop square. The wire has a diameter of 1 mm…
A: In summary;Magnetic moment of the wire loop is = 0.0499 Am^2The maximum torque applied to the loop…
Q: Two runners start one hundred meters apart and run toward each other. Each runs ten meters during…
A:
Q: A uniform electric field of magnitude 270 V/m is directed in the positive x direction. A +14.0 µC…
A: a) The change in potential energy is, ΔU=−756×10−6Jb) The charge moves through a potential…
Q: Electric charges are arranged as shown in the diagram below. Q 7.5x10-C P 0.20 m 0.20 m Q-2.5x10-6 C…
A:
Q: A car travels on a straight road at a constant velocity of 67mi/h. A second car, initially parked on…
A:
Q: A 975-kg jeep comes to rest from a speed of 97.5 km/h in a distance of 105 m. Consider that the jeep…
A:
Q: The figure below shows a top view of a bar that can slide on two frictionless rails. The resistor is…
A: Answer is given below: Explanation:Question 1:Answer:A) B)
Q: An eight-turn coil encloses an elliptical area having a major axis of 40.0 cm and a minor axis of…
A: Given : No. of turns of coil N = 8 a = 40/2 = 20 cm , and b = 30/2 = 15 cm…
Q: A basketball player is running at 5.35 m/s toward the basket when he jumps into the air to dunk the…
A: 3.836 m/s.228.017mDetailed soultion of the problem is attached below.Explanation:Detailed…
Q: . A common cause of cardiovascular disease is atherosclerosis, the hardening and narrowing of…
A: The answer to each part has been calculated with explaination.Explanation:
Q: Figure 2.30 represents acceleration as a function of time, t. Which of the following could represent…
A: Option (II) accurately depicts the graph discussed in the question.On the graph's y-axis,…
Q: Determine the change in internal energy of 1.00 liter of water (mass 1.00 kg) at 125°C when it is…
A:
Q: Three uniform spheres of masses m₁ = 3.00 kg, m₂ = 4.00 kg, and m3 = 5.00 kg are placed at the…
A: FINAL ANSWER: Resultant gravitational force on the object of mass m2 is 8.34×10^-11i…
Q: Describe what you understand by dynamical instability of a nucleus. Define packing fraction f and…
A: The dynamical instability of a nucleus refers to the state where the nucleus is not stable and can…
Q: A magnetic field directed into the page changes with time according to B = 0.051 0² + 1.40, where B…
A:
Q: The following Hamiltonian describes spins in a magnetic field: Ĥ = ω0Ŝz.Show the following: the…
A: The objective of the question is to demonstrate that an entangled state of two spins in a magnetic…
Q: A 100gram ball thrown vertically downward stricken the ground with a speed of 20m/s. It then…
A:
Q: 10. When you transfer a charge by touching or rubbing you are A. creating direct electrical current.…
A:
Q: Calculate the difference in heat required to raise the temperatures of 1.00 kg of gold and 1.00 kg…
A:
A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal. He wants to walk 45 min. at a speed of 3.5 mph. What elevation does he need to set the treadmill to complete this workout?
Step by step
Solved in 3 steps with 3 images
- You are traveling along a freeway at 65 mi/h. Your car has kinetic energy. You suddenly skid to a stop because of congestion in traffic. Where is the kinetic energy your car once had? (a) It is all in internal energy in the road. (b) It is all in internal energy in the tires. (c) Some of it has transformed to internal energy and some of it transferred away by mechanical waves. (d) It is all transferred away from your car by various mechanisms.A bullet fired into a trunk of a tree loses 1/4 of its kinetic energy in traveling a distance of 5 cn. Assuming constant retardation before stopping, it travels a further distance of: A 150 cm B 1.5 cm C 1.25 cm D 15 cmA student spends part of his day walking between classes, during which time he expends energy at an average rate of 525 W. The remainder of the day he is sitting in class, studying in library, or resting during break; during these activities, he expends energy at an average rate of 178 W. If he expends a total of 8.3 x10^7 J energy in a 24-hour day, how much of the day did he spend walking?
- While running, a person dissipates about 0.600 J of chemical energy to mechanical energy per step per kilogram of body mass. If a 75.0 kg runner dissipates energy at a rate of 83.0 W during a race, how fast is the person running? Assume a running step is 1.50 m long.A leaky 10-kg bucket is lifted from the ground to a height of 15 m at a constant speed with a rope that weighs 0.5 kg/m. Initially the bucket contains 45 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 15-m level. Find the work done. (Use 9.8 m/s2 for g.)When you put on the brakes on your bicycle, friction heats the steel rims of your wheels. Could this heating be a problem? Suppose a 65 kg cyclist with a 15 kg bike is descending Trail Ridge Road in Rocky Mountain National Park, going down a 7.0% grade and thus losing 7.0 m in height for every 100 m oftravel along the road. If the cyclist keeps a constant speed of 6.0 m/s, and we assume that all of the “lost” energy ends up as thermal energy in the two steel rims, each of mass 0.80 kg, by how much does the temperature of each rim rise in 1.0 minute?
- A 3.0 × 10-3 kg copper penny drops a distance of 50.0 m to the ground. If 65 percent of the initial potential energy goes into increasing the internal energy of the penny, determine the magnitude of that increase.The food calorie, equal to 4186 J, is a measure of how much energy is released when the body metabolizes food. A certain fruit-and-cereal bar contains 140 food calories. (a) If a 65 kg hiker eats one bar, how high a mountain must he climb to “work off” the calories, assuming that all the food energy goes into increasing gravitational potential energy? (b) If, as is typical, only 20% of the food calories go into mechanical energy, what would be the answer to part (a)? (Note: In this and all other problems, we are assuming that 100% of the food calories that are eaten are absorbed and used by the body. This is not true. A person’s “metabolic efficiency” is the percentage of calories eaten that are actually used; the body eliminates the rest. Metabolic efficiency varies considerably from person to person.)A 55.7-kg sky diver jumped out of an airplane at an altitude of 0.900 km. She opened her parachute after a while and eventually landed on the ground with a speed of 7.30 m/s. How much energy was dissipated by air resistance during the jump?
- A leaky 10-kg bucket is lifted from the ground to a height of 12 m at a constant speed with a rope that weighs 0.5kg/m. Initially, the bucket contains 36 kg of water, but the water leaks at a constant rate and finishes draining just as the bucket reaches the 12m level. Find the work done. (Use 9.8 m/s2 for g)The food calorie, equal to 4186 J, is a measure of how much energy is released when food is metabolized by the body. A Milo Bar contains 180 food calories per bar. (a) If a 70-kg hiker eats one Milo Bar, how high a mountain must he climb to “work off” the calories, assuming that all the food energy goes only into increasing gravitational potential energy? (b) If, as is typical, only 20% of the food calories go into mechanical energy, what would be the answer to part (a)? (NOTE: In this problem, we assume that 100% of the food calories that are eaten are absorbed and used by the body. This is actually not true. A person’s “metabolic efficiency” is the percentage of calories eaten that are actually used; the rest are eliminated by the body. Metabolic efficiency varies considerably from person to person.)The Kingda Ka roller coaster at Six Flags Great Adventure and Safari in New Jersey currently holds the world record for maximum height (139 m). A hydraulic motor accelerates the roller coaster cars to 128 mi/h before they start climbing the 139-m hill. If the cars are traveling at about 10 mi/h as they go over the top, what fraction of the cars’ original kinetic energy must have gone to some form of internal energy in the cars, track, and/or the air?