It is determined by immersing a crown in water that its volume is 29 in³ = (a) What would its weight be if it were made of pure silver? = 0.017 ft³ (b) What would its weight be if its volume were half silver and half juniper wood?

Q: A refrigerator does 270,000 J of work in 30 minutes. How much power does it generate? 30 minutes =…

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Q: Four operations in a manufacturing process represented as blocks are linked as shown. Each operation…

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Q: What is the critical angle for light traveling from crown glass (n = 1.52) into water (n = 1.33)?…

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Q: Four operations in a manufacturing process represented as blocks are linked as shown. Each operation…

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Q: 5698.4 in Hg to Mpa 25.95 Watts to in-lb/min 6469 kg/s to Hp 0.689 Hp to Erg/s

A: 5698.4 in Hg to Mpa1 in of Hg=0.00338639 Mpaso,5698.4 in Hg=0.00338639×5698.4 Mpa…

Q: the energy input to an engine is 4 times greater than the work it performs. what is its efficiency

A: Out put of the engine is the work it performs.Let it be w. Given the input is 4w Efficiency of an…

Q: A 4 watt robot motor is being fitted to a 3 kg robot. The motor runs for 10 seconds. How fast will…

A: Given: Power given to robot motor P = 4 watt Mass of the robot m = 3 kg. Time taken by robot to move…

Q: A chemistry grad student measures the performance Z of the new pump in his lab. The result is:…

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Q: A winch is driven by a 4.0 kW electric motor and is lifting a load of 400 kg to a height of 5.0 m.…

A: Formula of efficiency is as follows: η(%)=PoPin×100…

Q: Find the power available of a small reciprocating engine (J/s) and horsepower (hp) with the…

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Q: 250 N force is required to raise 75 kg mass from a pulley. If rope is pulled 12 m then the load is…

A: Given: Effort, P = 250 N Mass, m = 75 kg Distance travelled by effort = 12 m Distance travelled by…

Q: A hydraulic jack in a gas station lifts a 801 kg car a distance of 3.5 mm when a force of 168 N…

A: Given Lifted height = h = 3.5 mm × 3.5 × 10-3 m Mass of the car = m = 801 kg Force applied on…

Q: A semi has typical dimensions (2.6m wide, 4.1 m high, 16 m long). Assume the drag coefficient is…

A: Hence the answer

Q: (9 polnts) Consider the initial value problem if 0<t<1 10 if 1 <t <5 if 5 <t< 00, y +4y = y(0) = 2.…

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Q: Flapping flight is very energy intensive. A wind tunnel test on an 89 g starling showed that the…

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Q: If a person consumes 2000 Calories (kcal) per day, how many watts of power can they generate,…

A: Answer:-  Given  Energy consume (E) = 2000 kcal  ( 1 kcal = 4184 J )  E = 2000 × 4184 = 8368000 J…

Q: of the same diameter, 400 μ (with Vt = 1.5 m/s) ozzles that make all the drops 200 µ (with Vt =

A: Given: Vt=1.5 m/s Vt=0.7 m/s 400 μ 200 μ To find the new collection efficiency.

Q: How long will it take a 25 W machine to produce 438 J of work?

A: Power(p)= Work/Time So, Time = Work/Power

Q: A PHYS 1510 student was working on a robotics project. The joints on the machine they were building…

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Q: 75%. Calculate the pow air is 1.864 Kg/m³.

A: Given as, d=18 m, v=10ms , η=0.75, ρ=1.864 kgm3 .

Q: Name the physical quantities related to the following units : watt

A: Power is defined as the rate of doing work.    Power = Work/time The SI unit of power is Watt.

Q: The label on a candy bar says 400 Calories.  Assuming a typical efficiency for energy use by the…

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Q: Suppose you spend 30.0 minutes on a stairclimbing machine, climbing at a rate of 90.0 steps per…

A: The efficiency of the machine is

Q: A 170 pound man wants to design a workout (on a treadmill) that will expend 300 kcal.  He wants to…

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Q: 8) A 40 kg child stands at the edge of a uniform cylinder Merry-Go-Round of mass 80 kg and radius 2m…

A: Given  Mass of child m=40kg Mass of merry go round M=80kg radius r=2m Initial angular speed ω…

Q: How LONG DOES IT TAKE for a 75 Watt light bulb to burn out if it can 4 p perform 600,0dO J of work…

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Q: 8. While forming a 1.50 kg aluminum statue, a metal smith heats the aluminum to 2700 °C, pours it…

A: 8) Given that, the mass of the aluminum statue is m=1.5kg Initial temperature is Ti=110oC=383K Final…

Q: A clothes dryer uses 3000 W and is run fro 1 hour. If the total useful energy to dry the clothes is…

A: Given: Power of the dryer P= 3000 W  time to use dryer = 1 hour  Total useful energy to dry the…

Q: 7. An engine releases 1675 J of energy per cycle and performs 200J of work. What is the thernal…

A: The thermal efficiency of an engine is given by e% = WQin×100, where W = work done by the engine Qin…

Q: A thin long bar with axis of rotation through one end has a mass of 0.500 kg and a length of 10 cm.…

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Q: A 83kg person climbs a 6.2m ladder in 14s. What is the power out put for this process

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Q: Matthew (220lbs) has a Monarch cycle ergometer that he rides every morning.  He expends 300 Kcals…

A: Given, Mass of Matthew, m=220 lbs=99.8 kg Energy spent, E=300 kcals=1.25×106J Time,t=30 minute=1800…

Q: A 45 watt light bulb runs for 78 seconds. How much energy does it use?

A: The rate of change of work is called power. The SI unit of power is the watt. In mathematical…

Q: A girl pulls a 5kg wagon with a force of 20 n for 7 m. If the final speed of the wagon is 3.5 m/s,…

A: The objective of this question is to determine the efficiency of the process in which a girl pulls a…

Q: 1 Selling electricity, part 2 At the radius of the earth's orbit, the intensity of sunlight is I =…

A: According to the guidelines we are allowed to attempt only one question

Q: If a hair dryer is rated at 1750 W, how much energy does it require in 6 minutes

A: Consider the energy consumed by the dryer in hour is, E=Pt Here, P is the power consumed and t is…

Q: The units of efficiency (e) are O Joules/second O It's unitless N-m kg m-s" O O O O

A: The expression for the efficiency is given by, Efficiency=outputinput

Q: As a steel beam is winched up to the top floor of a new building, the mechanical energy is being…

A: The mechanical energy used to lift the steal beam helps it in lifting to top floor.

Q: Critically ill patients in a cardiovascular intensive care unit must be intensely monitored for any…

A: (a)strokevolume calculation:stroke volume(sv)is the amount ofblood pumped by the leftventricle of…

Q: An electric motor is rated at 10 horsepower (HP) and costs $800. Its full-load efficiency is…

A: Given: Full load efficiency is 85 % Efficiency of high-efficiency motor can be 90%

Q: A machine develops 30 W of power in 3 minutes. How much work is done by the machine in this time?

A: The work done and power relation is P=Wt t=3 min=180 sP=30 W