Suppose a car travels 108 km at a speed of 35.0 m/s, and uses 2.10 gallons of gasoline. Only 30% of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is 1.30 x 108 ) per gallon.) (a) What is the force (in N) exerted to keep the car moving at constant speed? (Enter a number.) 758.33 N

Q: For saving energy, bicycling and walking are far more efficient means of transportation than is…

A: a. the energy consumption by the person in walking is

Q: A helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s?. If the…

A: mass of crate = 100 kg acceleration = 0.8 m/s2distance = 5 m

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 97.5…

A: Normal force on sled is mgcosθ Friction force: Substitute mgcosθ for  in above equation. Here; =…

Q: problem 1 Compute the kinetic energy, in Joules, of a 1,600-kg automobile traveling at 50 kph.

A: Since you have posted multiple questions we will solve the first question for you. If you want any…

Q: During a long-distance race, a runner weighing 60.6 kg travels at a speed of 3.10 meters per second.…

A:

Q: A record for stair climbing was achieved by a man who raced up the 1600 steps of the Empire State…

A: Given data from question,  Number of steps = 1600 Height = 320m Time taken = 10.2min Weight of man =…

Q: While rearranging a dorm room, a student does 323 J of work in moving a desk 2.6 m. What was the…

A: Ans:-  Work:- The work done by a constant force acting on an object is equal to the displacement…

Q: If a small motor does 500 J of work to move a toy car 250 m, what force does it exert?

A: Work Done ( W ) = Force (F) * Distance moved (D) where W is in J ( Joules) F is in N (Newtons) and D…

Q: Fluffy has just caught a mouse, and decides that the only decent thing to do is to bring it to the…

A: The rate of work is known as power. Calculate the speed of Fluff's. Power = F*v 6.30 = 3.30*v v =…

Q: How efficient is a motor that uses 1600 J of electricity energy to accelerate a 200 kg moped from…

A: Efficiency is defined as the ratio of workdone to energy used. Efficiency =WorkdoneInput energy

Q: A shopper in a supermarket pushes a trolley with a force of 30N directed at an angle of 25° downward…

A: Given : F = 30 N θ = 25° d = 40 m

Q: A 213 kg crate slides 7.6 m until coming to a stop after being pushed by a large man. The effective…

A: Given data: Mass (m) = 213 kg Displacement (d) = 7.6 m Coefficient of kinetic friction (μk) = 0.37…

Q: Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10 m/s2)…

A: Potential energy is defined as the product of mass, gravitational acceleration and height. PE = mgh

Q: A 1700 kg car coasts on a horizontal road with a speed of 23 m/s. a) How much work must be done by…

A: Given data: Mass (m) = 1700 kg Initial velocity (v0) = 23 m/s Final velocity (vf) = 17 m/s Required:…

Q: A mouse of mass 30.0 g falls 130 m down a vertical mine shaft and lands at the bottom with a speed…

A:

Q: 8. Find the work done on a lagage of 50 kg. pulled by a string elevated at 45 degrees by a force of…

A: Given: The mass of the object is 50 kg. The applied force is 100 N. The angle between force and…

Q: Find the work available for a car weighing 1290N, that travels 200. meters

A: 1)weight of car = 1290 N distance travelled = 200 m

Q: How much work is done on a downhill skier by an average breaking force of 813 newtons to stop her in…

A:

Q: A force of 30 Newtons is required to maintain a spring stretched from its natural length of 12 cm to…

A:

Q: At an amusement park, a swimmer uses a water slide to enter the main pool. If the swimmer starts at…

A: The law of energy conservation,

Q: Calculate the total work done on a 1550-kg car as it coasts 20.4 m down a hill with f = 5.00°. Let…

A: Let m be the mas of the car, s is the distance traveled down the hill, and θ is the inclination…

Q: Find the work done in joules by gravity as an object of the mass m=11 kg is raised up at constant…

A: Mass, m = 11 kg  Height, h1=29 m and h2=78 m  Acceleration, a = -g = -10

Q: How much work is done when a hoist lifts a 260-kg rock to a height of 7 m? (Use 9.8 m/s2 for the…

A:

Q: A force of 30 Newtons is required to maintain a spring stretched from its natural length of 12 cm to…

A: Write a given values of this question. F=30Nl1=12cml2=15cmx1=12cmx2=20cm

Q: A particle was subjected to a force F, that varies with position as described by 375 F where F is in…

A:

Q: For saving energy, bicycling and walking are far more efficient means of transportation than is…

A: for cyclist : speed (v) = 11.5 mihrenergy consumed at the rate = 430 kCalhrby walkingspeed (v) = 3…

Q: A record was set for stair climbing when a man ran up the 2300 steps of the Empire State Building in…

A: Average power output is,

Q: Suppose that 48 J of work is needed to stretch a spring from its natural length of 9 m to a length…

A:

Q: While pushing her younger brother on a swing, Ivy exerted an average force of 446 N through a…

A:

Q: Which has more kinetic energy, a 0.0020-kg bullet traveling at 400 m/s or a (6.4 x 107 )-kg ocean…

A:

Q: A block is acted on by a force that varies as (1.9×104N/m)x for 0≤x≤0.21m, and then remains constant…

A: SOlution: Given that Force varies as (1.9×104N/m)x for 0≤x≤0.21m,  Force remains constant at 3990 N…

Q: You reach out of a window 15 m above the ground and toss a ball straight up with a speed of 10 m/s.…

A:

Q: A shopper pushes a grocery cart 36.6 m on level ground, against a 13.1 N frictional force. The cart…

A:

Q: 8. Find the work done on a lagage of 50 kg. pulled by a string elevated at 45 degrees by a force of…

A: Given:- F= Force 100 N S= Horizontal displacement= 10 m θ= 45° m= 50 Kg 8. Work done is given by:-…

Q: f the hand does 40 J of work on the 2.5 kg cart, how fast will it travel? If the person does 480…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: How much work must you do to push a 11.0 kg block of steel across a steel table (μk=0.6)at a steady…

A: a) The required work done is,

Q: that

A: Given, Mass(M)=13 kg. Displacement=65 cm=65/100 m=0.65 m. g=9.8 m/s²

Q: For saving energy, bicycling and walking are far more efficient means of transportation than is…

A: Egas = 1.3 x 108 J/gal 1 kcal = 4186 J Vb = 11 mi/h Eb = 400 kcal = 400 x 4186 = 1.67 x 106 J Vw = 3…

Q: A shopper in a supermarket pushes a trolley with a force of 40N directed at an angle of 35° downward…

A: Given: Force F = 40 N. Angle = 35o Distance ∆x = 30 m To determine: Work done Formula used: W = F ×…

Q: Suppose the ski patrol lowers a rescue sled carrying an injured skiier, with a combined mass of 92.5…

A: Work done on an object by a force F is given as- W=F.d=Fd cosθ where,d is the displacemnt of objectθ…

Q: How much work is done when a hoist lifts a 290-kg rock to a height of 5 m? (Use 9.8 m/s2 for the…

A:

Q: Consider again pulling a 60 m rope up a cliff face, where the rope has a mass of 66 g/m. At what…

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Q: The 2018 Pyeongchang gold medalist winner in a large hill ski jumping discipline, Kamil Stoch,…

A: Applying conservation of energy to calculate the final speed of the man…

Q: A generator is rated at 22500 Watts. Convert its power to horsepower using 1.00 hp = 746 Watts. A…

A: Part (1)  Given :  Power rated of generator, P = 22500 W  1.00 hp = 746 Watts  So Power in…

Q: how much work is done on a cart by a force F=(10i+5j)kN that causes a displacement of d=(2i+0j)m?

A: The work done is given by  W =  F→ . d→ where, F is the force vector and d is the displacement…