Q: The quantity F•v is ______? a.kinetic energy b.potential energy c.power d.work done
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Q: A 1500kg car can accelerate from 0 m/s to 3 m/s in 30s. What is the work done to the car (in Nm)?…
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Q: 38. What is the kinetic energy of a 10 kg object moving at 2 m/s? O 10J O 20 J O 40 J O 100 J
A: Here the mass of object is 10 kg and velocity is 2m/s.
Q: A cheetah has 5 joules of kinetic energy and runs up a 5 m hill. When it gets to the top of the…
A: Given- The kinetic energy of Cheetah (K.E) = 5 J Height cheetah can cover (h) = 5 m,
Q: Someone lifts 120g of snowballs off the ground, raises them to a height of 100 cm, and then throws…
A: m=120 g = 0.120 kg h=100 cm = 1 m v=10 m/s g=10 m/s^2 Work done = energy
Q: A body does 36 Joules of work in 5 seconds. What is it's power?
A: Introduction : In this question we are provided with value of work done and time taken. with…
Q: A water pump pumps out 2040kg of water per minute. (A) if water is coming out with a velocity of 3…
A: mass of water pumped per minute = 2040 kg mass of water pumped per second = 2040/60 = 34 kg
Q: A 200-kg box is lifted by a forklift from the ground to a height of 2.0 m. i. What is the work done…
A: i. work done by the forklift is W=mgh=200 kg9.8 m/s22 m=3800 J
Q: A 500 kg car traveling at 55 m/s slows to 30 m/s. How much work done is done on the car in slowing…
A: Given: Mass m = 500 kg Velocity u = 55 ms Velocity v = 30 ms To determine: Force and work done.…
Q: An 8.0-g bullet has a speed of 370 m/s. a. What is its kinetic energy? KE = J b. What is its kinetic…
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Q: how much work is required to increase a 1200 kg car's speed from 35 mph to 65 mph? how many J
A: The car's mass is, m=1200 kg The initial speed of a car is, u=35 mph=35×0.447 m/s=15.645 m/s The…
Q: A personal watercraft and rider have a combined mass of 378 kg. What is their kinetic energy (in J)…
A: Given data, Total combined mass of watercraft and rider , m = 378 kg velocity of watercraft and…
Q: A 150 g baseball is thrown so it acquired a speed of 20 m/s. Calculate the work done to make it…
A: Mass of baseball (m)=150 g=0.15 kg Speed of baseball after it is thrown (v)=20 m/s
Q: This is work and power, can someone please show me how to compute this? A 5.1 x 102 kg…
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Q: A 157.0 g baseball has a velocity of 31.8 m/s. What is its kinetic energy in J? KE J
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Q: A 1250 kg car is moving at 16.6 m/s. Then, 377 kJ of work is done on the car to increase its speed.…
A: According to work-energy theorem, the work done by the net force on a body is equal to change in…
Q: What is the work output of a machine with 62% efficiency with an in- put of 537 J? A 870 J 33 000 J…
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Q: An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force…
A: mass = 2 kg height = 2m if the value of g = 10 m/s2
Q: A spring exerts a force of 24 N when it is stretched 0.3 m beyond its natural length. How much work…
A: Given Data : The Force exerted by the spring is given as F0.3=24N The distance by which the spring…
Q: The energy consumed by a o.8okW electric drill is 45 kJ in 1. _hour/s. What is the speed of a 3.okg…
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Q: If you 30 J of energy to move an object you have done of work
A: Answer:- Given Energy = 30 J We know that According to work energy theorem Energy should be…
Q: 1300 kg truck is initially moving at 25 m/s. How much work will need to be done to bring the truck…
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Q: A body does 26 Joules of work in What is it's power? 4 seconds.
A: Given data : Work done = W Time Taken = t To find :…
Q: Q1. 1 Jis the energy required to doof work. O 1N O 1J O 9.8 N O 98 J
A: From Energy conservation: Work Done = Potential Energy
Q: A girl throws a lego brick of mass 1.92 kg straight upward with an initial speed of 26.23 m/s When…
A: The force due to the weight of the lego brick is given by: F= mawhere, m is mass of the brick…
Q: A body does 26 Joules of work in 4. seconds. What is it's power?
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Q: mr.berkley is driving his car down lake park at 21 m/s. He sees something in the road and slows down…
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Q: A kilowatt-hour is a unit that measures a) work per unit of time b) energy c) power d) work x time
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Q: Find the work done by th c F (N)A 10 -x(m) 25 50
A: Find the work done by the constant force. Work done is define as the area under the curve of…
Q: Q3. Find the amount of work done in lifting a body of 5 kg through 10 m. Take g = 10 m/s?. O 5J O 15…
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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: A body does 12 Joules of work in 2 seconds. What is it's power ?
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Q: The equation used to solve for Power is: P = W How can we rearrange this equation to solve for time?…
A: The power can be determined by the formula: P=Wt Here, W denotes the work done and t denotes the…
Q: A Starting pitcher is able to pitch a .145 Kg baseball with a velocity of 40.0 m/s. What velocity…
A: Given that Mass of the baseball m = 0.145 kg Velocity of the baseball is v = 40 m/s Mass of the…
Q: A machine does 186 J of work in 20 is the power of the seconds.what machine ?
A: Introduction : In this question we are provided with value of work and time . with these data we…
Q: A 1.0 kg box is moving with a velocity of 36.0 km/h. If 150 J of work is done on the box, what is…
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Q: An 8.0-g bullet has a speed of 370 m/s. a. What is its kinetic energy? KE = J b. What is its kinetic…
A:
Q: A 600 g bird is flying with a velocity of 12 m/s. What is its Kinetic Energy?
A: Kinetic Energy K.E = 43.2 Joules
Q: What is the height at point A if the KE at point c is l03.4I? Calculate PE, KE ùnd V. at point B.…
A: Using conservation of Energy at point A and Point C Total Energy at point A=Total energy at point C…
Q: What is the work done by a 256W electric grinder in three minutes? 36 080 J 56 230 J 26 550 J O46…
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Q: What is The SI unit of work?
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Q: =2 m/s F= 6N V2 10 m/s 1kg Ikg 1kg 8 meters KEpefore = W = KEter= How much work was done on the box?
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Q: A body travels at a velocity of 8 cm/min. What is its kinetic energy in J/kg?
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Q: A spring has a spring constant of 400 N/m and is compressed by 20 cm. How much energy is stored in…
A: Given data The spring constant is k=400 N/m The compressed distance is x=20 cm=0.2 m The spring…
Q: A personal watercraft and rider have a combined mass of 414 kg. What is their kinetic energy (in J)…
A: The kinetic energy of an object is the energy that it possesses due to its motion.It is defined as…
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- Pls help ASAP. Pls do all asked questions. Make sure to include all work, units, diagrams, proper notations.A 25g ball is released from rest 80m above the surface of the Earth. During the fall the total thermal energy of the ball and air increases by 15J. Just before it his the surface its speed is? O a. 35 m/s O b. 19 m/s O c. 53 m/s O d. 40 m/s O e. 45 m/sDot. What is the scalar product ÷ Bifà = x² + yĵ and B = yî − xĵ? O A. 2xy OB. x² - y² o c. xyi - yx) O D. zero Work. Which of the following is the correct general expression for the work done by a constant force Fof magnitude F on an object of mass m which undergoes a displacement d with magnitude d? O A. Fd OB. mgd OC. F- mg OD. F.d
- Q1. a. Distinguish between homogeneous and non-homogeneous equation. b.Find the work done in moving an object along a straight line from (3, 2, -1) to (2, -1, 4) in a forcefield given by F = 4i – 3j + 2k .A 1000 kg car moves with a speed of 20 m/s. Suddenly the driver speeds up to 30 m/s, what is the work done on the car by the net force during this motion (in J)? a. 175500 b. 150000 Cc. 112500 d. 250000 1. CWhat is the difference between when work is done by a system and when work is done on a system? a. Work done on a system causes an increase in the energy of the system. O b. Work done by a system causes an increase in the energy of the system. O c. С. None of them makes ay difference in the energy of the system.
- A system of two objects has ΔKtot = 9 J and ΔUint = -2 J. a.How much work is done by interaction forces? b.How much work is done by external forces?a) The acceleration of a 5.0 kg box is 2.5 ms?. when a horizontal force is applied across a surface having a coefficient of friction of 0.5, as shown in Figure 3. a = 2.5 ms-2 7 kg Hk = 0.5 Figure 3 Find the work done over a distance of 25 cm by ix. the horizontal force the frictional force, and Х. xi. the net force. xi. what is the change in kinetic energy of the box?2. A 59 kg person climbs up the stairs with a height of 5.5 m. a.How much work does the person do? b.What is the increase in GPE of the person at this height? c.Where does the energy come from to cause this increase in GPE?
- 13.lf it takes total work W to give an object a speed v and kinetic energy K, starting from rest, what will be the object's speed (in terms of v) and kinetic energy (in terms of K) if we do twice as much work on it, again starting from rest?mm. Calculate the work done during the Ex. 75: A metal wire of length 2.5 m and area of cross-section 1.5 x 10 m2 is stretched through 2 stretching. (Y = 1.25 x 10" N/m2) %3DQuestion #30. Please use the attached equation sheet and start with an equation from the sheet and work from there. You can manipulate anyway you want you just have to start from the equation sheet.