The electric motor of a model train accelerates the train from rest to 0.765 m/s in 24.5 ms. The total mass of the train is 875 g. (a) Find the minimum power delivered to the train by electrical transmission from the metal rails during the acceleration. W

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2700 kg load a height of…

A: Given data *The given mass is m = 2700 kg *The given height is h = 35.0 m *The final speed is v =…

Q: (a) What is the average useful power output (in W) of a person who does 5.00 x 106 J of useful work…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2700 kg load a height of…

A: a) we will calculate the work done by the motor and then calculate the power from it The motor works…

Q: A crate of mass 10 kg is pulled up a rough incline with an initial speed of 1.5 m/s. The pulling…

A:

Q: (a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp equals 746 W) to…

A: It is given that,

Q: A 25 kg box sliding to the left across a horizontal surface is brought to a halt in a distance of 25…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2200 kg load a height of…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of…

A: Given value--- load mass = 2300 kg. height = 45 m. time = 12 sec. initial speed = 0 m/s. final…

Q: (a) Find the useful power output (in w) of an elevator motor that lifts a 2300 kg load a height of…

A:

Q: (a) How long (in s) will it take an 865 kg car with a useful power output of 38.0 hp (1 hp = 746 W)…

A: Work energy theorem formula: W=change in kinetic energy     =∆K      =Kf-Ki      =12mvf2-12mvi2…

Q: A vehicle pulls a cart horizontally with a force of 40 lbs at an angle of 30 above the horizontal…

A: Given data  Force ( F ) = 40 lb Angle ( θ ) = 30°  Speed ( v ) = 6.0 mi/h  Time ( t ) = 10 minutes…

Q: A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to…

A: Given that             The mass of the skier is(m) = 70Kg. Since he is moving upward with constant…

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: A bowling ball is dropped from the top of a building that has a height of ℎ=104m.  (a)Using energy…

A:

Q: A skier of mass 78 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Step 1To work out the force, the cable must overcome the component of gravity parallel to the…

Q: Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of 40.0…

A:

Q: A skier of mass 75 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given:Mass of the skier = 75 kg

Q: A skier of mass 70 kg is pulled up a slope by a motordriven cable. (a) How  much work is required to…

A:

Q: A 3.00 [kg] brick slides head-on to a spring with spring constant k = 320 [N/m]. When the 1 stops,…

A:

Q: A 5 kg box is pushed 1 m from rest across horizontal ground using a force of 25 N applied at 30°…

A:

Q: (b) A body of mass 6 kg is acted upon by a force of 5 N is moving along a rough floor at a constant…

A: Given: The mass (m) of the body is 6 Kg. The force (F) acting on the body is 5 N. The velocity (v)…

Q: To stretch a spring 5.00 cm from its unstretched length, 25.0 J of work must be done. (a) What is…

A:

Q: A 12.0 kg box is pulled 3.00 m to the right along the floor by applied force P=40.0N at 30.0…

A:

Q: Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50…

A: Given  force constant (k)=50 N/m mass of block =50 kg incline angle=300 displacement(x)=0.5 m…

Q: (a) Find the useful power output of an elevator motor that lifts a 2500-kg load a height of 35.0 m…

A: (a) Given data The mass is, m=2500 kg The height is h=35.0 m The time is t=12.0 s The initial speed…

Q: W A skier of mass 70 kg is pulled up a slope by a motordriven cable. (a) How much work is required…

A:

Q: A cyclist starts from rest and coasts down a 4.0° hill. The mass of the cyclist plus bicycle is 85…

A: mass of cyclist plus bicycle , m = 85 kg angle of inclination  of hill , θ' = 4o distance traveled…

Q: A 75.0-kg cross-country skier is climbing a 3.0º slope at a constant speed of 2.00 m/s and…

A:

Q: (a) Find the useful power output (in W) of an elevator motor that lifts a 2700 kg load a height of…

A: a) The elevator’s power can be determined as, Here, E and t represent the total energy and the…

Q: A skier of mass 61 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: (a). the vertical distance travelled by the skier is

Q: A skier of mass 80 kg is pulled up a slope by a motor-driven cable. (a) How much work is required…

A:

Q: A sprinter who weighs 670 N runs the first 7.0 m of a race in 1.6 s, starting from rest and…

A: weight of sprinter, W = 670 N  initial velocity of the sprinter, u = 0 m/s  time, t = 1.6 s…

Q: (a) How long will it take an 850 kg car with a useful power output of 40.0 hp (1 hp equals 746 W) to…

A:

Q: a) Find the useful power output (in W) of an elevator motor that lifts a 2600 kg load a height of…

A: mass, m = 10000 kg  height, h = 40 m  time, t = 12 s  final velocity, v = 40 m/s  cost = $ 0.09 per…

Q: a) Find the useful power output (in W) of an elevator motor that lifts a 2300 kg load a height of…

A: Write the work energy theorem Work = Change of potential energy + Change in kinetic energy W = dP +…

Q: Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50…

A: We know spring force as the block is moved right or left, always in the opposite direction as the…

Q: Án 800 N soldier in basic training climbs a 14.5 m vertical rope at a constant speed in 8 s. What is…

A:

Q: A skier of mass 70 kg is pulled up a slope by a motor driven cable. A.) How much work is required to…

A: Given Data:- Mass of the skier is m=70 kg Slope of the ramp is θ=30° Length of the slope is d=60 m…

Q: A skier of mass 62 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: a) The expression for calculate work required to pull the skier is W=mghsinθ Substitute values in…

Q: To stretch an ideal spring 3.00 cm from its unstretched length, 12.0 J of work must be done. (a)…

A: Work done by spring to stretch or compress by x  is given by,  E=12kx2 J Substitute the given value…

Q: To push a 25.0 kg crate up a frictionless incline, angled at 25.0 to the horizontal, a worker exerts…

A:

Q: The electric motor of a model train accelerates the train from rest to 0.830 m/s in 20.5 ms. The…

A: Given:           Initial velocity of the train u = 0; Final velocity of the train v = 0.83 m/s and…

Q: A skier of mass 79 kg is pulled up a slope by a motor-driven cable. (a) How much work is required to…

A: Given information:Mass of the skier (m) = 79 kgSlope of the cable (θ) = 300Distance he has to be…

Q: a An 82-kg skater is pushed on a frictionless surface through a straight line displacement of =…

A: Work done by a force.

Q: A 4.00 kg crate starting at rest slides down a rough 6.00 m-long ramp, inclined at 30.0° below the…

A: The given values with suitable variables are listed below. Here, m denotes the mass, d denotes the…

Instantaneous Power

Power is defined in physics as the amount of energy transmitted or transformed per unit time. The watt is the unit of electricity in the International System of Units, equivalent to one joule per second.