A tennis ball has a mass of 56.7gm and is served by a player with a speed of 180kmph. What is the work done in serving the ball nearly?
Q: Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3…
A: Given Data: Constant Force F=25 N Mass of object M=2 kg Duration of force t=3 sec
Q: The diagram shows a crate with mass m = 38.2 kg being pushed up an incline that makes an angle φ =…
A:
Q: Bonny Blair of the United States set a world record in speed skating when she skated 5.00 x 10^2 m…
A: Kinetic energy is defined as energy due to virtue of its motion. Kinetic energy =12mv2 GIVEN : Mass…
Q: What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work while…
A:
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10×105 J of useful work…
A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10×105 J of useful work while…
A: The efficiency can be obtained as
Q: A 54.0-kg skateboarder starts out with a speed of 1.70 m/s. He does +80.0 J of work on himself by…
A: mass of a skateboarder=54kg Intial speed of skateboarder=1.7m/s Work done by feat=80j Work done by…
Q: Problem 159. A square based cuboid shaped metal con- tainer, whose mass is 13 kg, has a height of 6…
A:
Q: True or false The potential energy of an object cannot be increased by internal forces. When a…
A: Internal forces are kind of forces that are exchanged by the object in the system. The internal…
Q: While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body…
A:
Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 x 105 J of useful work…
A: A) W= 2×105 J E= 500kcal = 21× 105 J B) efficiency = 20%
Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work…
A: The efficiency of is calculated as useful workmetabolizing enegy×100%
Q: (a) What is the kinetic energy of a 1,580.0 kg car with a velocity of 79.9 km/h? (b) How much work…
A:
Q: - A weight-lifter does 4.4 x 10³ J of work in raising a weight from the floor to a height of 2.0…
A: Given Work (w) = 4.4 × 103 J Height (h) = 2 m (a) let average force is ' F ' . w = F× h…
Q: (a) What is the efficiency of an out-of-condition professor who does 1.90 x 105 J of useful work…
A: (a) The expression to solve for the efficiency of the work done by the professor while metabolizing…
Q: A 2.00-kg particle moves from the origin to position, having coordinates x = 4.00 m and y = 4.00 m…
A:
Q: You walked a one hundred step stair to a shrine in Shibuya, Tokyo. The height of each stair is…
A: total number of stair = 100 height of each step = 20 cm=20 x 10-2 m total vertical distance…
Q: A force of 120 lb force acts on a block at an angle of 82° with respect to horizontal. The block is…
A:
Q: In the figure, the vehicle has a mass of 2000 kg, and is traveling at a speed of v = 50 m/s. If the…
A:
Q: While an airplane is in flight, the pilot announces that an emergency landing has to occur. In…
A: Given quantities: mass of the passenger (m) = 82 kg height through which it descends (H) = 391 m…
Q: 3. A certain force applied on an object is depicted below. (a) What is the work done by the force…
A:
Q: A 55.2-kg skateboarder starts out with a speed of 1.94 m/s. He does 85.6 J of work on himself by…
A: The work energy theorem for nonconservative force is:- Wnc = ΔK E + ΔP E ΔK E IS THE CHANGE IN…
Q: A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its…
A:
Q: A force is described by the equation F=- axi + bj, where a and b are constant values and F is in N.…
A: Force is ; here are constants.Force is in units of Find:(a) Work done due to this force from origin…
Q: (a) What is the efficiency of an out-of-condition professor who does 1.90 x 105 J of useful work…
A:
Q: A small 65g toy rocket is launched straight up from the ground at 120 km/h (a) What is the kinetic…
A: Given The mass of the rocket is m=65 g=65×10-3 kg. The initial velocity of the rocket is v=120…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 10° J of useful work…
A: a) We know that, efficiency= (output/input)x100 So here output is 2.10×10^5 joule and input is…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 ✕ 105 J of useful work…
A: Part(a): Work-done is W=2.10×105 J Food energy is E=510 kcal Note: 1 kcal=4184 J Find: Efficiency of…
Q: a) What is the efficiency of an out-of-condition professor who does 1.90 ✕ 105 J of useful work…
A: Useful work done : W = 1.90 ✕ 105 J Heat provided by food: Q = 510 kcal = 2.134 x 106 J…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10×105 J of useful work while…
A: Part (a) Given: The work done by professor is W=2.10X105J. The food energy is Q=500 kcal. The…
Q: A pump is required to lift 800 kg of water per minute from a well 13.8 m deep and eject it with a…
A: Here the mass of water lifted per minute = 800 kgdepth of well = h = 13.8m the ejected speed of the…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work…
A:
Q: A solid 25-kg wood block is lifted a vertical distance of 3 meters. Its potential energy increases…
A: Given data: Mass (m) = 25 kg Height (h) = 3 m Acceleration due to gravity (g) = 10 m/s2 Required:…
Q: (a) What is the kinetic energy in joules of a 1150-kg automobile traveling at 79 km/h? =____ Joules…
A: a. the kinetic energy in joules is KE=12mv2=121150kg79km/h×0.2777m/s1km/h2=2.76×105 J
Q: What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work while…
A:
Q: A 82 kg wooden block is pushed against a spring (not attached) compressing it through 25cm from its…
A:
Q: A 300 g hockey puck is shot across an ice-covered pond. Before the hockey puck was hit, the puck was…
A: We have to determine the change in energy of punk over time.
Q: A crane slowly lifts a 263 - kg crate a vertical distance of H = 13.0 m. mg F crane crane H (a) How…
A:
Q: (a) What is the efficiency of an out-of-condition professor who does 2.30 ✕ 105 J of useful work…
A:
Q: A woman lifts a single shopping bag weighing 100N from the ground to a height of 15cm. She then…
A: Solution: Given that weight = 100 N distance d = 2km = 2000 m height = h = 15 cm = 0.15 m
Q: RELATIONSHIP BETWEEN WORK AND ENERGY Theory: The net work done on an object always produces a change…
A: Mass of the bullet, m = 20 grams = 0.02 kg Initial velocity of the bullet, v0 = 250 m/s Final…
Q: A spring has a constant k = 12 N/m and natural length of 0.5 meters. Find the work required to…
A: Spring constant (k)= 12 Nmnatural length (L) = 0.5 m New length (L') = 1.5 m Final length (L'') = 2…
Q: Ricky moves a wagon a distance of 36 meters by pulling the handle with a force of 120 Newtons. If…
A: Given: Force (F) = 120 N Distance (d) = 36 m Work done = 2200 J
A tennis ball has a mass of 56.7gm and is served by a player with a speed of 180kmph. What is the work done in serving the ball nearly?
Step by step
Solved in 2 steps with 1 images
