An object with a mass of 2.0 kg accelerates 2.0 m/s? when an unknown force is applied to it. What is the amount of the force?

Q: If a moving body is decelerated by the action of a resisting force, the work done by the body is on…

A: given; is work done bye the body is on apar to its change in kinetic energy?

Q: Does the work required to lift a book to a high shelf depend on how fast (in seconds) you raise…

A: Does the work required to lift a book to a high shelf depend on how fast (in seconds) you raise…

Q: A system including a movable part, a piston, undergoes two stages. In the first stage, the system is…

A:

Q: A car is accelerated from rest to 85 km/h in 10 s. Would the energy transferred to the car be…

A: The final velocity of the car is the same in both cases. From the work-energy theorem, Since the…

Q: 500 J/(Kg. C), is The quantity of heat required to raise the temperature of 500 g of iron by 2°C…

A: As given in question, Mass of iron = m = 500 g = 0.5 kg Change in temperature = ΔT = 2 oC Specific…

Q: determine the weight of the air in lbf contained in a room whose dimensions are 6.6m x 9.6m x 8.4 m.…

A: Calculated the weight of the air in lbf .

Q: 2. A 210 kg motorcycle accelerates from 0 to 50 mi /hr in 5.0 s. (a) What is the magnitude of the…

A: Given Data Vf=50 mph t=5 s

Q: The energy required to raise the temperature of a unit mass of a substance by one degree is known as

A: The energy required to raise the temperature of a unit mass of a substance by one degree is known as…

Q: If the specific volume of a certain gas is 0.852 m/kg, what is its specific weight? 11.51 N/m? 15.21…

A:

Q: The mass of a baseball is 0.843 lb. Determine its kinetic energy relative to home plate of a 90.66…

A:

Q: What is the mass of an object that falls freely under the influence of gravity from an elevation of…

A:

Q: What is the difference between pound-mass and pound-force?

A: The main difference between pound-mass and the pound-force is that one is the unit of mass, and…

Q: A rotating solid disk with a diameter of 0.25 m and a mass of 10 kg is used to store 1 kJ of energy.…

A: Store Kinetic energy = 1KJ diameter=0.25m mass = 10Kg

Q: When a force is being applied to a body, does the ability of the body to resistthe force have any…

A: When a force is being applied to a body, it changes the interatomic distances and creates strain in…

Q: A 1-kg rock is thrown horizontally off a 121-m height building. As it leaves the edge of the…

A: The vertical component of the velocity as it touches the ground can be determined as,…

Q: Q2) A ball of mass (2 kg) is thrown upward at a distance of 4 m. Calculate the work done by the…

A: Work done by the force of gravity, Wg=mgh For upward direction The motion is positive and…

Q: A fish tank that contains 60 cm high water is moved in the cabin of elevator. Determine the pressure…

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Q: An object has a kinetic energy of 25 J and a mass of 34 kg, how fast is the object

A: Given data:

Q: Dynamic  kinetic particle force mass accelaration   the answer is V2 = 13.4 m/s

A: Given that ;  WA=25Nv1=1m/sWB=30Nt=2sμk=0.3

Q: Calculate the total potential energy, in kJ, of an object with a mass of 208.72 lbm when it is 9.76…

A:

Q: Fluid A fills a one-gallon [gal] container and weighs 50 newtons [N]. The density of Fluid B is 1125…

A: Given data  for fluid A  volume of container (VA) = 1 gal = (1*0.003785) m3…

Q: 1. (i) A can of soft drink at room temperature is put into the refrigerator so that it will cool.…

A: i) A can inside the refrigerator is a part of refrigeration system in which refrigerant circulant…

Q: what is the required force to move a car (1300 kg) from rest to 80 m (with a 20 m/sec)?

A:

Q: Q1: Calculate the force necessary to accelerate a 900-kg rocket vertically down at the rate of 30…

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Q: A gas initially at an absolute pressure of 30 in Hg and 20 °C heat undergoes a process to an…

A: Given:P1=30 in H1gT1=20°CP2=50 in HgT2=50°CV2=8 ft3

Q: The mass of an airplane at sea level (g = 32.174 ft/s2) is 10 metric tons. Find its (a) mass in…

A:

Q: 6. A painter whose mass is m holds himself up while sitting on the modified bosun's chair assembly…

A:

Q: According to newton’s law of cooling, the rate at which a substance cools in air is directly…

A: Write the given values with the suitable variables. T0=30 °FT1=100 °FT2=75 °Ft1=15 minTi=80 °FTf=35…

Q: 2. A 200 kg motorcycle accelerates from 0 to 55 mi /hr in 5.0 s. (a) What is the magnitude of the…

A:

Q: 30. A1 000-kg roller coaster car is initially at the top of a rise, at point . It then moves 135 ft,…

A: First of all, make a FBD of the diagram as shown below,

Q: An object whose mass is 5 lbm is subjected to an applied upward force. The net acceleration of the…

A:

Q: 1. You serve a volleyball with a mass of 2.1 kg. The ball leaves your hand with a speed of 30 m's.…

A:

Q: A rigid, hermetically sealed container contains two fluids: water (103 kg / m3 ) and air. A pressure…

A:

Q: 500//(Kg.°C), is: The quantity of heat required to raise the temperature of 500 g of iron by 2°C…

A: Given:mass of iron, m=500 gIncrease in temperature, ∆T=2°Cspecific heat of iron, Cp=500 J/Kg.°C

Q: Substance A has a density of 1.7 g/cm^3. Substance B has a density of 1.7 kg/m^3. Without doing any…

A: Given data: The density of substance A is, ρA = 1.7 g/cm3. The density of substance B is, ρB = 1.7…

Q: 6. Determine the energy required to accelerate a 1300- kg car from 10 to 60 km/h on an uphill road…

A: Given data: m=1300 kgvi=10 km/hvf=60 km/hh=40 m Need to determine the energy required to accelerate.

Q: Determine the specific mass in kg/m3 of oil, if the specific volume of the oil is 11.393 x 10-4…

A:

Q: (a) A car with a mass of 850 kg is moving to the right with a constant speed of 1.44 m/s. What is…

A: According to the Newton Second Law of motion ,  Force is equals to the acceleration and mass of the…

Q: A net force of 30 N acting on a wooden block produces an acceleration of 6 m/s2 for the block. What…

A: Given:F=30 Na=6 m/s2

Q: An object whose mass is 5 lbm is subjected to an applied upward force. The net acceleration of the…

A: aNet=16 ft/s2m=5 lbmg=32.2 ft/s2 Need to determine the magnitude of the applied upward force.

Q: A 3-kg object with a density of 7500 kg/m3 is placed in water. The weight of this object in water is…

A: The mass of the body is given as m = 3 kg

Q: An airplane weighing 19903.13 lbf at ground is flying at an altitude of 32, 247.95 ft at 591 miles…

A:

Q: Determine the net force, in Newton's, that a 75kg person would experience in an aircraft whose…

A: Given: Mass of the person (m)=75kgAcceleration of the aircraft (a)=3g Assumption: Acceleration due…

Q: An object whose mass is 90 lb is projected straight upward from the surface of the earth and reaches…

A: Given:m=90 lbh=900 ftg=32.2 ft/s2

Q: What is the mass of an object that falls freely under the influence of gravity from an elevation of…

A:

Q: A 40-kg person is climbing 3 m up a flight of stairs in 9 seconds. How much power did they exert…

A: Power = work * time

Q: A car with a mass of 1308 kg slows down from 58 km/h to 24km/hr. Calculate the change in its kinetic…

A: Given valuesmass of the car is =1308kgit is slows down from 58km/h to 24km/hSo we have to calculate…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.