A certain rain cloud at an altitude of 1.75 km contains3.20 x 107 kg of water vapor. How long would it take for a2.70 - kW pump to raise the same amount of water from Earth’ssurface to the cloud’s position?

Q: Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a…

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Q: Consider a helicopter in two different situations: at sea level and at the top of a high mountain.…

A: We know that  The value of acceleration due to gravity decreases with height as gh = g(1-2h/R) This…

Q: A certain rain cloud at an altitude of 2.04 km contains 3.20 x 10' kg of water vapor. How long would…

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Q: The human small intestine moves food alongits 6.9-m length by means of peristalsis, a contraction…

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Q: The human heart is a powerful organ. If your heart can take in and discharge about 6773.2 liters of…

A: Given Volume of blood , V = 6773.2 L  Density of blood , D = 1.06 kg/L  Height lift ,H = 1.7 m  Time…

Q: A 5.0-kg block is pushed 3.0 m up a vertical wall with con- stant speed by a constant force of…

A: Figure shows the force acting on the block.

Q: What power on the cable does it require to lift a 250 kg elevator cab and 4 passengers each with a…

A: mass of elevator cab = 250 kg Number of passengers = 4 mass of each passenger = 50 kg Height (h) =…

Q: A 0.21-kg apple falls from a tree to the ground, 4.0 m below.Ignoring air resistance, determine the…

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Q: A 0.25-hp motor is used to lift a load at the rate of 5.0 cm/s. How great a load can it raise at…

A: Given: The power is 0.25 hp. The constant speed of the motor is 5 cm/s.

Q: A certain rain cloud at an altitude of 1.40 km contains 3.20 107 kg of water vapor. How long would…

A: Altitude of the rain cloud,  Mass of the water vapor,  Power of the pump,  Acceleration due to…

Q: It takes 23.1 seconds to hoist a rescue diver of mass 80 kg from the ocean surface to a helicopter…

A: The energy at the height hovering 29.6 meters above the ocean surface is E=mgh=80 kg9.8 m/s229.6…

Q: What is the shortest possible time for a forklift with a 2¾ horsepower lifting motor to raise a…

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Q: 9. A car of mass 1550 kg traveling at 27.0 m/s is at the foot of a hill that rises 110 m in 2.60 km.…

A: Average power is defined as the ratio of total work done by the body to the total time taken by the…

Q: A 150 g particle at x = 0 is moving at 2.00 m/s in the +x-direction. As it moves, it experiences a…

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Q: A tower crane has a hoist motor rated at 155 hp. If the crane is limited to using 71.0% of its…

A: Given:  Crane's hoist motor rate  = 155 hp           Crane is limited to using  71 percent of its…

Q: Calculate At an amusement park, a swimmer uses a water slide to enter the main pool. If the swim-mer…

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Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1200 kg, which is…

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Q: A certain rain cloud at an altitude of 1.75 km contains 32000000 kg of water vapor. How many days…

A: The rate of doing work is called power.  Work to lift the water = m g h  where, m is the mass, g is…

Q: A diesel engine pumps out 49 kg of water in one second. The water comes out vertically upwards with…

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Q: A 54-kg ice skater pushes off the wall of the rink, giving herself an initial speed of 3.2m/s. She…

A: Write the expression for horizontal force using Newton’s second law

Q: 6) Usain Bolt (m 86kg) is able to complete the 100m dash in 9.64s. a. Assuming constant…

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Q: A 1300-kg car moving on a horizontal surface has speed y = 50 km/h when it strikes a horizontal…

A: The kinetic energy will equal to the elastic potential energy. mv22=kx22

Q: Water flows over a section of Niagara Falls at a rate of 1.4 × 106 kg/s and falls 60 m. What is the…

A: Given: The rate of mass of the water=dmdt=1.4×106 kg/s. The height of the fall=h=60 m Acceleration…

Q: At what rate is the gravitational force on a 2.0kg projectile doing work at the instant this…

A: Given : Mass of a projectile (m) = 2.0 kg Speed (v) = 4 m/s Angle (θ) = 30°

Q: 13. Which requires more work, carrying a 420-N knapsack up a 200 meter high hill or carrying a 210-N…

A: Given  two forces F1= 420N and F2 = 210N And two displacement d1= 200m and d2 = 400m So we have to…

Q: Calculate the average power necessary for a 55.8 kg person to run up a 5.0 m high, sloped hill, in…

A: The expression for the average power is P=Wt Here,P  is the average power,  iWs the work done by…

Q: Calculate the power output needed for a 989.00 kg car to climb a 2.00° slope at a constant 45.00 m/s…

A: Given, Mass of  car m = 989 Kg Slope θ =2∘   Speed v = 45 m/s friction f = 749  N   We know the…

Q: A 700 N Marine soldier in basic training course climbs a 10.0 m vertical rope at a constant speed in…

A: Given, Weight of Marine soldier =W=700 N Height of climbing=h=10.0 m Time is taken by the soldier to…

Q: A 8kg crate, starting from rest, is pulled across a floor with a constant horizontal force of 230N.…

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Q: 12. From his original orbit at the altitude of 4.0×10 m, how much work must his rocket-pack do to…

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Q: A kayaker paddles with a power output of35.0 W to maintain a steady speed of 2.24 m>s. (a)…

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Q: Resistance to the motion of an automobile consists of road friction, which is almost independent of…

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Q: While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute, displacing…

A: Given:- While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute…

Q: How much work is done when you push a crate horizontally with 120 NN across a 11-mm factory floor?…

A: The work done is given by  W  F x d  where, F is the force in the direction of  displacement and d…

Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1200 kg, which is…

A:

Q: A hydroelectric generator converts kinetic energy of water into electrical energy. Each second 2264…

A: (A) Total energy available per second

Q: As part of a charity fund-raising drive, a Chicago marathon runner of mass 50.0 kg runs up the…

A: Given data:  Mass of runner (m) = 50.0 kg Height of building (h) = 443 m Time (t) = 15.0 minutes…

Q: Little Hudson holds the 10-kgkg barbell 0.3 mm above the floor. What is the PE of the barbell…

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Q: How much power does it take for a 60 kg person to run up stairs at a rate of 2.5 steps per second if…

A: Given data:  Mass (m) = 60 kg Time (t) = 1 s Number of steps rup up in 1 second = 2.5 Height of each…

Q: Name Phs 101 Quiz 3 (Spring 2019) 1) What would be the power output (in hp) if a 1750 kg car if it…

A: 1)Find the energy consumed by the car, by using law of conservation for energy.

Q: A 10,000 W motor operates an elevator weighing 5,000 N. Assuming no frictional losses, how high is…

A: Expression for power P=EPt=mght=Whth=PtW

Q: A climber climbs a summit of height 400 m in 60 min. If the climber is 80 kg, what is the average…

A: Power is defined as rate of doing work, P=Wt Work done by an object in moving a height h above the…

Q: When an automobile is traveling at 60 km/hr, its engine is developing 25 hp. a) Find the total…

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Q: The engine of the car has a power of 355 hp. If it 800 kg and moves horizontally, what will be its…

A: Power of engine "P"= 355h.p = 264.72kW. mass of car "m"= 800 kg  time taken "t"= 7sec . initial…

Q: Yosemite Falls in California is about 0.740 km high. What average power would it take for a 73.0-kg…

A: The average power required for a person to hike up to the top of Falls is

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.