Find by how much has internal energy of her hands increased

Assignment Help Physics

Reference no: EM13554234

On a cold day, Ming rubs her hands together to warm them up. She presses her hands together with a force of 4.1 N. Each time she rubs them back and forth they move a distance of 16 cm with a coefficient of kinetic friction of 0.44. Assuming no heat flow to the surroundings, after she has rubbed her hands back and forth eight times, by how much has the internal energy of her hands increased?

Reference no: EM13554234

Questions Cloud

Sketch the shear stress distribution across the section : An I-section beam 350*200mm2 has a web thickness of 12.5mm & a flange thickness of 25mm - Sketch the shear stress distribution across the section.

Which of the following does not determine the behavior : Which of the following does NOT determine the behavior?

Define a solution of tribasic sodium phosphate : A scientist wants to make a solution of tribasic sodium phosphate. Na3PO4 for a laboratory experiment. how many grams of Na3PO4 will be needed to produce 625 mL of a solution that has a concentration of Na+ ions of 0.700 M

Find the temperature of the outer surface of the clothes : A person sitting quietly in a room on a winter day may lose heat primarily by radiation from the outer surface of her clothes to the walls of the room. what is the temperature of the outer surface of the clothes

Find by how much has internal energy of her hands increased : On a cold day, Ming rubs her hands together to warm them up. She presses her hands together with a force of 4.1 N. by how much has the internal energy of her hands increased

Evaluate the molarity of the 50% koh solution : A 50% KOH solution (d= 1.52 g/mL) is made by adding 50 grams of KOH and enough water until the weight of the solution is 100 g. Calculate the molarity of the 50% KOH solution.

Improve performance for the second quarter : Rosen should be seriously considered for the CEO position and discuss three shortcomings of the absorption approach for internal decision-making

Calculate what is the angle of the first dark fringe : A 0.72 mm diameter hole is illuminated by infrared light of wavelength 2.5 micrometers. What is the angle of the first dark fringe

Evaluate the molar concentration of ag+ ions : The following solutions are mixed together:121.0 mL of 1.54 M AgNO3 and 45.0 mL of 1.29 M K2SO4. Calculate the molar concentration of Ag+ ions in the final solution.

User Account

All Pages