An elevator has mass 775 kg, not including passengers. The elevator is designed to ascend, at constant speed, a vertical distance of 20.0 m (five floors) in 18.0 s, and it is driven by a motor that can provide up to 49.0 hp to the elevator. What is the maximum number of passengers that can ride in the elevator? Assume that an average passenger has mass 70.0 kg. 1 hp = 746 W.

Q: A 710 kg car drives at a constant speed of 23 m/s. It is subject to a drag force of 500 N. What…

A: Given,mass of the car, m = 710 kgspeed of the car, v = 23 msdrag force, F = 500 Nslope of the…

Q: Suppose a car travels 108 km at a speed of 35.0 m/s, and uses 1.80 gallons of gasoline. Only 30% of…

A: (a). The amount of work done to keep the car moving at constant speed can be calculated as follows,

Q: A block of mass m = 331 g is dragged with a string across a rough horizontal table. The string…

A:

Q: A roller-coaster car is moving at 5.6 m/s along a straight horizontal track before entering the…

A: Given Data:- Speed of the roller-coaster car before entering the first drop is vA=5.6 m/s From the…

Q: When we are interested in biological energy resources and metabolism, we need to know, among other…

A: The potential of a mass M at height h from the earth ground is U = Mghwhere, M is the mass…

Q: You push a file cabinet up a frictionless ramp tilted at 10.°with horizontal. The file cabinet has a…

A:

Q: A 3.50-kN piano is lifted by three workers at constant speed to an apartment 25.0 m above the street…

A: GivenWeight of Piano, W=3.5 kN=3.5×103 NHeight above the street, h=25 m

Q: Power P = Fv cos o. A car engine delivers 2.24 x 104 W to wheels when moving at a constant speed of…

A: F= 829.63NExplanation:If you have any problem let me know here in comment box for this thankyou.

Q: When an automobile moves with constant speed down a highway, most of the power developed by the…

A: Given: Power P = 196 hp = 196 * 746 W P = 146,216 W velocity v = 27 m/s

Q: 30. John is riding an elevator. If John notes that the elevator travels upwards with a speed of 0.23…

A: mass (m)=75 kg acceleration due to gravity(g)=9.8 m/s2 speed(v)=0.23 m/s

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

A: Given Data :initial speed u = 0 msinitial height hi  = 2.55 mlet v denotes the speed at the bottom…

Q: A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional…

A: Write the given values with the suitable variables. m=78 kgh=11.4 mu=0 m/sWf=-6×103 J Here, m, h, u,…

Q: Suppose a car travels 108 km at a speed of 40.0 m/s, and uses 2.10 gallons of gasoline. Only 30% of…

A: The energy content of gasoline,

Q: A 3.80 kg block is pulled up a frictionless inclined plane by a 53.O N force that is parallel to the…

A: Given data The mass of the block is m = 3.80 kg. The force on the inclined plane is F = 53 N. The…

Q: Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 1.80 gallons of gasoline. Only 30% of…

A: The work done by a force on moving a body by a distance is given by W = F.s, where F = the force…

Q: A 1,452 kg sports car accelerates from rest to 27.1 m/s in 12.3 s. What is the average power output…

A: Given data: Mass of sports car is, m=1452 kg. Initial speed of car is, u=0 m/s…

Q: A certain rain cloud at an altitude of 1.46 km contains 3.20 ✕ 107 kg of water vapor. How long would…

A: Take the surface of the Earth to be zero potential energy point. The work done by the pump must be…

Q: An electric engine in a 2.0 kg remote-control toy car has a power output of 4.0 W. How fast will it…

A:

Q: A box of mass 4.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

A: It is moving up with constant Velocity

Q: Suppose a car travels 108 km at a speed of 20.0 m/s, and uses 1.90 gallons of gasoline. Only 30% of…

A: Give data, Distance covered by the car, S = 108 km Initial velocity of the car, u = 20.0 m/s Total…

Q: When a car is moving at constant speed, the developed potential is used to overcome the frictional…

A: Given Data: The power developed by the car is P = 50 hp. The velocity of car is v = 24.6 m/s. The…

Q: Suppose a car travels 108 km at a speed of 25.0 m/s, and uses 2.20 gallons of gasoline. Only 30% of…

A: Given : d = 108 km = 108 x 103 m v = 25 m/s V = 2.20 gallons e = 30% = 0.30 E = 1.3 x 108 J per…

Q: A typical human brain has a mass of 1.4 kg, which makes up about 2% of a person's mass. However, the…

A:

Q: A car requires 72.8 hp to maintain a constant speed of 21.3 m/s on a straight, flat road. Assuming…

A:

Q: A farmer is using a rope and pulley to lift a bucket of water from the bottom of a well that is hy =…

A: Given:The depth of the well is 9.5 m. The force is 59.5 N. The total mass =mb+mw=3.1 kg

Q: 27. A 5000 kg dump truck has a maximum 400 hp (1 hp = 746 W), and it is moving up on an inclined…

A: Given Power is P=400 hp=298400 W Coefficient friction is μk=0.80 Angle of inclination is θ=15o Mass…

Q: Part A: how much friction force is acting against the cargo ship when it is at its top speed?

A: Explanation and answers are in next step.

Q: A fighter jet is launched from an aircraft carrier with the aid of its own engines and a…

A: Work done on the jet by catapult is,