1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]

1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]

Name: 1. a) A man weighing 765 N is on a bed of nails. Calculate the pressu
Uploaded: 2024-03-20T06:51:10.000Z
Channel: Bartleby
Description: 1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by eachnail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b)Calculate the pressure exerted on the skin by acupuncture needle of radius r

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Related questions

Q: Q. 17: Convert the following reading of pressure to kPa, assuming that the barometer reads 760mm Hg.…

A: We will use the conversion of the followings readings to the desired one,

Q: Plz solve

A: Given that,Mass of the girl : (m) = 50 kg Acceleration due to gravity : (g)=9.8 m/s2Diameter of the…

Q: A cylindrical water tower is filled to a depth of 6.00 m, and has the dimensions shown in the…

Q: In a car lift used in a service station, pressure is transmitted by an incompressible liquid from a…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: The four tires of an automobile are inflated to a gauge pressure of 1.8 x 105 Pa. Each tire has an…

Q: A bug from South America known as Rhodnius prolixus extracts the blood of animals. Suppose Rhodnius…

Q: You inflate the tires of your car to a gauge pressure of 38.0 lb/in2. If your car has a mass of 1250…

A: Given data The gauge pressure of the inflated tires is Pin = 38 lb/in2 The car's mass is m = 1250…

Q: A diver is 16.0 m below the surface of the ocean. The surface pressure is 1.00 atm, and the density…

Q: The entrance opening of a horizontal pipe has a radius of 6 cm and water is flowing at .35 m/s. The…

Q: 5 metals rod arranged vertically on table .the weight of each metal rod is 3N and its cross section…

A: weight of each rod= 3 N cross-section area of each rod is 3.0*10-3 m2

Q: You can chew through very tough objects with your incisors because they exert a large force on the…

A: Force, F=430 N Area, A=1.14 mm2 To determine pressure.

Q: B) What is the area of contact each tire makes with the road

A: Given data: m=1430 kgp=31 lb/in2 Need to determine the area of contact each tire makes with the road…

Q: A lady wearing high heel shoes balances on a single heel. The heel is circular with a diameter 0.8…

Q: A block of sold copper sits on a fat, level surface. Copper has a density of 8.94 x 10 kg/m. The…

A: Given Information:- Density of Copper is d=8.94×103 kg/m3. Mass of the block is m=23.6 Kg. Surface…

Q: You can chew through very tough objects with your incisors because they exert a large force on the…

A: Given that, the force is 510 N and area is 0.900 mm2

Q: A group of acrobats form a human tower, each standing on the shoulders of another acrobat. Tha…

Q: 1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if…

A: Given:Weight of man: W=765 NRadius of tip of each nail: rna=5.00×10-4 mRadius of tip of needle:…

Q: Consider the following statements about pressure (I) Pressure is defined as the force normal to an…

Q: Problem 3: Suppose the aqueous humor in a person's eye exerts a force of 0.28 N on the 1.35-cm² area…

Q: A phonograph needle has a point with a radius of 8.00 x 10-5 m. The record exerts a force of 0.180 N…

A: Given data r=8×10-5 mF=0.18 N

Q: Homework 1, Problem 7: Suppose a bicycle plus rider has a mass of 77.5 kg, and the gauge pressure…

A: The objective of this question is to calculate the total area of the bicycle tires in contact with…

Q: What is the pressure inside an alveolus having a radius of 2.50 X 10 m if the surface tension of the…

A: radius, r = 25 m surface tension, T = 0.025 N/m

Q: A cylindrical vial with a diameter of 5.00x10-3 [m] is filled with liquid mercury (ρ=13.6x103…

Q: A lady wearing high heel shoes balances on a single heel. The heel is circular with a diameter 0.8…

Q: 3. If the viscosity of water is 0.75 cP and density of liquid copper is 8,960 kg/m^3 how much water…

A: For non-turbulent, non-pulsatile fluid flow through a uniform straight pipe, the volume flow rate…

Q: Determine the absolute pressure on the bottom of a swimming pool 28.0 m by 8.1 m whose uniform depth…

A: FLUID MECHANICS

Q: A person who weighs 596 N is riding a 78-N mountain bike. Suppose the entire weight of the rider…

A: 0.000552 m2 OR 5.52 cm2Explanation:The total weight of the bike and the person is 674 N. Since the…

Q: The cube with 8.00 m wide and 8.00 m long and 8.00 m high has a weight of 900.00 N. What pressure…

A: Pressure = Force / Area

Q: A 0.8 kg block is moving horizontally to the right with a speed of 6 m/s when it strikes a vertical…

A: Given, Mass of block (m) = 0.8kg { Take right side as positive direction and left side as…

Q: a group of clowns form a human tower on each others shoulders. they each have a mass of 64.7 kg,…

Q: Water flows through a horizontal pipe with a cross- sectional area of 4 m2 at a speed of 5 m/s with…

A: Here given the horizontal zontal pipe at initial cross section is 4 m² where speed is 5m/s and…

Q: ་ Part A Determine the absolute pressure on the bottom of a swimming pool 30.0 m by 8.0 m whose…

A: Pressure is scalar quantity.

Q: A uniform pressure of 7.0 x 105 N/m2 is applied to all six sides of a copper cube. What is the…

Q: A diver descends from a salvage ship to the ocean floor at a depth of 35 m below the surface. The…

A: depth of ocean floor (h) = 35 m density of ocean water (d) = 1025 kgm3

Q: Three polarizing sheets are stacked. The first and third are crossed; the one between has its…

A: The first polarizer reduces the intensity of the beam by factor of ½ and hence the intensity of the…

Q: A cylindrical container of radius r=5.00 cm and height h=40.0 cm is filled with mercury to the top…

A: Given data:

Q: What is the pressure on a fish 16.0 m under the ocean surface? (Density of ocean water = 1025…

A: We know, P=Pair+ρgd

Q: You can chew through very tough objects with your incisors because they exert a large force on the…

Concept explainers

Fluid Pressure

The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.

Gauge Pressure

Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.

Topic Video

Question

1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each
nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b)
Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm
(1.00 x 10 m) applied with a force of 3.00 N.
Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is
a needless use of non-SI units.]

9. A parcel of air having a volume of 1.00 cm³ (1.00 x 106 m³) at a pressure of one
atmosphere (1.01 x 105 Pa) is at a temperature of 300 K. Calculate the number of
particles.
Ans. 2.44 x 1019

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: Given data:

Step 2: Part a)

Step 3: Part b)

Step 4: Guidelines

Solution

Step by step

Solved in 5 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A cylinder swimming pool has a radius 2mand depth 1.3m. It is filled with salt water of specific gravity 1.03. The atmospheric pressure is 1.013×10^. a) Calculate the density of salt water?
IP The weight of your 1450 kg car is supported equally by its four tires, each inflated to a gauge pressure of 35.0 lb/in^2. what is the area of contact each tire makes with the road? If the gauge pressure is increased, does the area of contact increase, decrease, or stay the same? what guage pressure is required to give and area of contact of 106 cm for each tire? this is one question.
What outward force (in N) is needed on the outside of a lung to create the pressure P noted in the figure below, where P = -5.00 mm Hg? -2.0 mm Hg Take the area affected to be 280 cm2. (This force is easily created by the diaphragm and chest muscles, as we breathe many times a day.)
a) Calculate the buoyant force (in N) on a 2.40 L helium balloon. N (upward) (b) Given the mass of the rubber in the balloon is 1.90 g, what is the net vertical force (in N) on the balloon if it is let go? You can neglect the volume of the rubber. N (upward)
Calculate the pressure exerted on the ground by a 77 kg person standing on one foot. Assume that the bottom of the person's foot is 13 cm wide and 28 cm long. A) 2.1 x 103 Pa B) 2.1 x 104 Pa C) 4.8x 104 Pa D) 5.3x 104 Pa X
The aqueous humor in a person's eye is exerting a force of 0.135 N on the 1.27 cm2 area of the cornea. a. What pressure is this in mm Hg?
You can chew through very tough objects with your incisors because they exert a large force on the small area of a pointed tooth. What pressure in Pa can you create by exerting a force of 530 N with your tooth on an area of 0.800 mm2?
Given: A woman of m = 51 kg stands on the ice. The contact area between her skate and the ice is A = 0.0061 m2 Express the force that the person exerts on the ice, F, in terms of m and g. You do not need to include the force of the column of air above her. Calculate the numerical value of F in N. Express the pressure on the ice from the person P in terms of F and A. Calculate the numerical value of P in Pa
a) Determine the total force and the absolute pressure on the bottom of a swimming pool 25.0 meters by 9.5 meters, whose uniform water depth is 2.0 meters. b) what will be the pressure against the side of the pool near the bottom?
What is the average pressure on the soles of the feet of a standing 90.0 kg person due to the contrast force with the floor? Each foot has a surface area of 0.020m^2
&6
The block shown is acted upon by its weight W = 400 lb, a horizontal force Q = 200lb, and the pressure P exerted by the inclined plane. The resultant R of these forces is up and parallel to the incline thereby sliding the block up it. Determine P and R. W P 15° 300