Gravitational force and the escalator
A 75.0kg man is riding in a shopping mall. The escalator moves the man at constant velocity from ground level to the floor above, a vertical height of 4.60m. What is the work done on the man by the gravitational force and the escalator?
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The force exerted by the wind on the sails of a sailboat is Fsail = 380 N north. The water exerts a force of Fkeel = 200 N east. If the boat (including its crew) has a mass of 260 kg, what are the magnitude and direction of its acceleration?
A 35.0- battery with negligible internal resistance, a 50.0- resistor, and a 1.25- inductor with negligible resistance are all connected in series with an open switch. The switch is suddenly closed. How long after closing the switch will the curre
A 300 g block on a 54 -long string swings in a circle on a horizontal, frictionless table at 75. What is the speed of the block? What is the tension in the string?
A man pushes a lawn mower on a level lawn with a force of 200 N. If 42% of the force is directed horizontally, how much work is done by the man in pushing the mower 4.8 m?
A beam of alpha particles produced a current of 10^-14 A in a parallel-plate ionization chamber for 8 s. The chamber contained air at STP (36 ev ip^-1). If the chamber volume was 240 cm^3, what was the energy absorbed per unit mass in the chamber
what is the probability that an electron energy state in Ge will be occupied at temperature T=300 K if the energy state is greater than the Fermi energy by 2 eV? Repeat the calculations for T=77 K.
Speedboat A negotiates a curve whose radius is 160 m. Speedboat B negotiates a curve whose radius is 180 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of the boats?
What is the minimum current in the rod that will cause it to float in a horizontal magnetic field of 1.70972 T?
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Explain the risks of not reporting the results of your forensic assessment findings accurately. Provide specific examples.
Read "The Effect of Tart Cherry Juice Compared to a Sports Drink and Cycling Exercise Performance, Substrate Metabolism, and Recovery" from University Library
Identify and analyze one resource that provides information regarding services for dealing with and treating substance use and abuse in youth or adolescence.
Discuss how culture may influence one's perceptions. Provide an example of how culture may impact the interaction between a patient/client
Write an essay describing your achievement of a goal and your friends or family member's achievement of a goal using motivational theory
Pets can have a therapeutic effect on people; they seem to have the power to calm the anxious and cheer the depressed. Give three reasons
Review Chapter 12 and consider how your culture has impacted your worldview and personality. Pay particular attention to the section on characteristics of Cult