Alice and Bob work in a bakery. Bob frosts cupcakes 3 times faster than Alice does. Working together Alice and Bob frost 80 cupcakes in an hour. At what rate does Bob frost cupcakes? Group of answer choices 25 cupcakes/hour 60 cupcakes 20 cupcakes/hour 20 cupcakes 60 cupcakes/hour

Q: The cliff divers at Acapulco, Mexico, jump off a cliff 26.7 m above the ocean. Ignoring air…

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Q: A roller coaster is moving at 13 m/s at the top of the first hill (h= 53 m).  Ignoring friction and…

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Q: A object weighing 33 kg goes up a 7 meter hill. If 231 J of thermal energy ar created how fast was…

A: Given, Mass, m=33kg Height, h=7m According to the conservation of energy,   12mv2=mgh+231

Q: This is a multi-part problem. Please answer all parts here. A 2 kg object is moving along the…

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Q: A compression spring has a spring constant of 30 kN/m. Initially the spring is compressed 1 cm…

A: Spring constant, k = 30 kN/m=> k = 30*103 N/mInitial distance of compression, xi = 1 cm=> xi =…

Q: A 1400kg car accelerates from 5 m/s to 25 m/s .Then net work done by the car is?

A: Given Mass m = 1400 kg Initial velocity u = 5 m/s Final velocity v = 25 m/s

Q: What is the energy ?E required to accelerate a 1645 kg1645 kg car from rest to 27 m/s? Compared to…

A: From work energy theorem, the net work done is equal to change in kinetic energy .Write the…

Q: A student is riding a bicycle at a constant speed of 4.29 m/s on a level road. The mass of the…

A: Data provided:   Constant Speed (v) = 4.29 m/s Frictional and drag force (Fr) = 31.6 N Asked: The…

Q: A box m = 58 kg is being pulled by a constant force F = 173 N at an angle of θ = 23 degrees. The…

A: Draw the free-body diagram of the box.

Q: A wind turbine works by slowing the air that passes its blades and converting much of the extracted…

A: Given: The mass of the air that moves the blades every second is m=92000 kg. The velocity of the…

Q: A man weighing 750N climbs a flight of stairs which is 5 meters high. How much work does he do?

A: Given data:  Weight (mg) = 750 N Height (h) = 5 m Required: The work done (W)

Q: How much work is done to expand a 10-cm diameter cylindrical chamber at 1 atm from a length of 10 cm…

A: Hence, the work done is 79.58 J

Q: A 1000kg car traveling at 35 m/s takes 9 m to stop under full braking The same car under similar…

A: Given data *The mass of the car is m = 1000 kg *The initial speed of the car is u = 35 m/s *The…

Q: A roller coaster car is approaching the top of a hill with a speed of 7.1 m/s.  The top of the hill…

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Q: In an attempt to conserve energy (and, let’s be honest, save some cash), Bob decides to ride his…

A: Let the speed of Bob on the ground ismph. Fill the table using the given information as follows:…

Q: A stealth fighter is in a level flight at a speed of 400 kph and an altitude of 1000 m when it drops…

A: The stealth fighter is flying their plane at an altitude of 1000 m, with a level speed of 400 kph.…

Q: A 0.60 kg rubber ball is thrown into the air. At a height of 30 m above the ground, it is travelling…

A: Given: Mass,m=0.60kgAcceleration due to gravity,g=9.8m/s2Height,h=30mVelocity,v=18m/s An object's…

Q: In a sunny location, sunlight has a power density of about 1 kW/m2 . Photovoltaic solar cells can…

A: The input power given to a solar cell is given by the equation,…

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 lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…

A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…

Q: The work W done when lifting an object varies jointly with the mass m of the object and the square…

A: Answer:- The problem statement suggests that the work W varies jointly with the mass m and the…

Q: A car travels 300 km in 6 hours. What is the average speed of the car (in km/hr)? Given: Work:…

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Q: One kilowatt-hour (kWh) is the amount of work or energy generated when one kilowatt of power is…

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Q: As a gasoline engine is running, an amount of gasoline containing 15,000J of chemical potential…

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Q: In the formula W=F x d the work is measured in joules. What metric units does joules stand for?

A: Given: W = F x d

Q: A bodybuilder lifts a 150 kg barbell to a height of 3.0 m.  What is the work done by the bodybuilder…

A: The potential energy is given by  U = m g h  where, m is the mass,  g is the gravity and h is the…

Q: Let's return to our ball-Earth example, only now let's examine a case where a ball is rising in the…

A: Near the Earth's surface, the gravitational potential energy of a system consisting of the earth and…

Q: A pair of bullocks exerts a force of 140 N on a plough. The field being ploughed is 15 m long. How…

A: We know thatWorkdone=force×displacement

Q: A hiker of mass 63 kg is going to climb to the top of mount tam, which has an elevation of 2,574 ft.…

A: Given,Mass of the hiker, m = 63 kgheight of the mountain, H = 2574 ftThe hiker starts from, h = 375…

Q: A small project consists of 3 activities P, Q and R to be executed in that sequence. The…

A: For total duration of 25 units, we observed from the tabular as P --> T = 8 then C = 250 , Q…

Q: A typical baseball has a mass of 0.145 kg. Some pitchers can throw a baseball with a speed of about…

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Q: The cliff divers at Acapulco, Mexico, jump off a cliff26.7m above the ocean. ignoring air…

A:

Q: A driver climbs up the stairs to the diving tower. The work he does climbing the stairs is?

A: When someone is climbing he needs to do work against gravity. The work is defined as the dot product…

Q: The kinetic energy of a moving object is KE = 1/2 mv2, where m is the mass and v is the speed. An…

A: Given data:  Mass (m) = 0.22 kg Kinetic energy (KE) = 0.59 million joules Required:  The speed of…

Q: A 10 kg mass initially sitting on the ground is placed on a ledge 3 meters above ground level. What…

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Q: A 75 kg sprinter accelerates from 0 to 8.0 m/s in 5.0 s. What is the metabolic energy, in kJ…

A: From work energy formula we know, Metabolic energy = change of K.E…

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: The cost of fuel in running a locomotive is proportional to the square of the speed and is $25 per…

A: The answer to the above problem is given below

Q: How much work is done on a 50kg sack of rice if its carried along a 10m long road?

A: Given value--- mass = 50 kg . displacement = 10 m We have to find--- work done?

Q: A set of stadium stairs consist of 90, 20 cm high steps. A 70 kg runner is training by traversing up…

A: As per bartleby guideline for more than one subparts asked only first three are to be answered…

Q: Under normal conditions the human heart converts about 12.7 J of chemical energy per second into…

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Q: We drop a plastic ball to the floor from a height of 2.0 m and let it bounce several times. 30% of…

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Q: Shelby weighs 750N and the staircase is 6m tall. She runs to the top of the stairs in 4.8 seconds.…

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Q: A student with a mass of 61.0 kg is walking at a leisurely pace of 1.80 m/s. What is the student's…

A: question 1 : mass of student, m= 61.0 kg ; speed of the student,v = 1.80 m/s question 2: mass of the…

Q: 7A roller coaster passes the summit and then reaches the bottom of its run at high speed. An…

A: Roller coaster at summit has some gravitational potential energy. As it passes the summit, the…