Q: 1. A student of mass 40 kg caries a bag weighing 5000g from the ground floor to his class on the…
A: Work done by boy W= mgh Given that m= 5kg h= 0.7m
Q: A student in a lab exerts a force of 25 N on an angle to pull a block by a distance of 48 cm. If a…
A: Given data :- Force F = 25 N Displacement d = 48 cm = 0.48 m Work done W = 11 J
Q: ••27 In Fig. 27-40, the resis- tances are R, = 1.0 n and R, = 2.0 0, and the ideal batteries have…
A: As given, The resistor, R1=1 Ω The resistor, R2=2 Ω The emf voltage, ε1=2 V The emf voltage, ε2=ε3=4…
Q: 4. An engine that worked for 46 s consumed E = 23,500 J and lifted a in 75 kg body from the ground…
A: Work done for lifting an object from the ground is equal to change in the gravitational potential…
Q: How much work is done (how much energy is required) to accelerate a 1987.5 kg car entering the…
A: According to work-energy theorem work done is equals to changes in between Final kinetic energy and…
Q: 43. An elevator’s electric hoist is rated at 8.0 kW and has an efficiency of 90.0%. The hoist lifts…
A:
Q: 13. How much mechanical work is required to move a 1.0 kg of blood (roughly 1L) from your feet to…
A:
Q: A man does 375 J of work by lifting some boxes to a height of 3 m. How much force has he used?
A: Let the force be F We use the formula for work done W=Force ×displacement =Fh
Q: 5. What potential energy does a 60.0-kg gymnast acquire in climbing 7.00 m up a vertical pole?
A:
Q: Find the work done in joules by gravity as an object of the mass m=5 kg is raised up at constant…
A: Given : m = 5 kg h1 = 23 m h2 = 69 m g = 10 m/s2
Q: . You use 40 J of energy to rise a 250 N object. How far high did you lift it
A: Given Potential energy is U=40 J Weight of an object is mg=250 N
Q: A truck is carrying 1.35 tonne of calcium carbonate to a sugar industry located on top of the hill.…
A: SOlution: Given that mass of CaCO3 = 1.35 Tonne U at halway mark is = 689 kJ h = 25 m
Q: A ball of mass 2 kg starts from rest. Find its final Kf for each example. It is accelerated at 5…
A: Given: The mass of a ball is m=2 kg. The initial velocity of the ball is u=0 m/s. Case 1: Given:…
Q: According to the law of conservation of energy: O Energy is conserved only when the device is 100%…
A:
Q: 22. What is the work required to raise a 350 kg steel beam to a height of 7.50 m? Group of answer…
A:
Q: A 5500 W lathe can move an iron block at a constant speed of 4.3 m/s. What is the force applied to…
A: Given Power (P)=5500 w speed(v) =4.3 ms-1 Required force(F)=?
Q: 14. Calculate the total work done by the system from z, = 1.40 m to a; = 4.80 m when force applied…
A: Given data: The initial position of the system is, xi = 1.40 m The final position of the system is,…
Q: An object in a horizontal surface was moved by applying a constant force (in Newtons), F = 8î + 5ĵ.…
A: The force applied to the object is Object displaced distance to the right is d = 9 m
Q: 6. A 2,500 kg airplane can accelerate on the runway from rest to 250 mph in 15 seconds. What is the…
A:
Q: You are working at a factory. You put a carton (box) with a mass of 2.5 kg on a 1.5-m frictionless…
A:
Q: object with 4.8 kg dropped with initial velocity 20m/s . The air resistance is 0.002v newton. Where…
A:
Q: 4. If it takes a 100-N force to lift one shovel full of snow up 1.5 m, how many shovels full could…
A: Solution:-Given thatForce (F)=100 NDisplacement (d)=1.5 mTotal energy (E)=28 kJ=28000 J
Q: Consider a lightbulb rated for a power of 20 watts. This lightbulb consumes a certain amount of…
A:
Q: 18. A 100-g bullet is fired from a rifle having a barrel 0.600 m long. Choose the origin to be at…
A:
Q: 17. An energy efficient lightbulb, taking in 28.0 W of power, can produce the same level of…
A: Write the given data with appropriate variables. Here, P1 denotes the power of an efficient bulb,…
Q: Detemine where the l histhe a. Ans, 4.48 m H-
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: 44. The work done when the point of application of a force F=(15i+7k)N moves through a displacement…
A:
Q: 10. A 100 MW expressed in powers of 10 is given by: * O 1.0 x 106 W 1.0 x 107 W 1.0 x 108 W 1.0 x…
A: The power in megawatts is given as,
Q: 1. Calculate the work done from x = 0 to x = 7 m by the one-dimensional force depicted in the…
A:
Q: 1 а 2 The work done by a conservative force between two points A and B depends on a path taken True…
A: Given data: A conservative force Object moves from Point A to B by two ways Required: The work done…
Q: onconservative pushing force does 58.0 J of work. How much work is done by the pushing force when…
A:
Q: Select the equation used to calculate an object's KE = 2 mv? KE mr = O KE =1 m
A: Given:- The kinetic energy of the object Find;- correct option of the following a) KE= 2mv2b)…
Q: 9. Conservative or Not Conservative F(x,y) = (x²-yx)î + (y² – xy)j
A:
Q: 5.A hiker climbs from an elevation of 1,500 ft to the top of a mountain whose height is 3,800 ft…
A: Given Mass (m ) = 95 kg h1 = 1500 ft = 1500 × 0.305 m h2 = 3,800 ft = 3,800 ×…
Q: How many grams of matter would have to be totally destroyed to run a 100-W lightbulb for 3.0 y?…
A: Step 1: Step 2: Step 3: Step 4:
Q: - A moving object whose initial KE is 10 J is subject to a frictional force of 2 N that acts in the…
A: Given data: Initial kinetic energy (KEi) = 10 J Final kinetic energy (KEf) = 0 J Force (F) = 2 N…
Q: A tank is full of water. Find the work (in ft-lb) required to pump lb/ft³. (Round your answer to the…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Calculate the input power P of the engine, the mechanical work W it produced and its output power P,…
A: (b) The input power of the engine is the rate at which the energy is consumed by the engine. From…
Q: a person holds a 50 Newton object stationary for 10 seconds, 2 meters above the floor, what is the…
A: The work done is given as product of the force and displacement. W = F x d
Q: A certain rain cloud at an altitude of 2.10 km contains 3.20 x 10 kq of water vapor. How long would…
A: Given values:Mass of the water vapor, m = 3.20 x 107 kgHeight of water be raises, H = 2.10 km = 2.10…
Q: 5. Compute the kinetic energy of a1200 kg. automobile traveling at 20 km/hr. 1
A:
H+
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