4. An engine that worked for 46 s consumed E = 23,500 J and lifted a in 75 kg body from the ground to a height of 21 m above the ground.
Q: A volcano spews a 350kg rock vertically upward to a height of 550m. (a) With what velocity was the…
A:
Q: Coal is lifted out of a mine a vertical distance of 50 m by an engine that supplies 500 W to a…
A:
Q: What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work while…
A:
Q: A 15 × 10² g ball is thrown straight up in the air with an initial upward velocity of 25 m s-'.…
A: Given Mass of ball m=1500g=1.5kg Initial speeed v=25m/s
Q: 1. A 4kg ball is launched into the air from the ground with a speed of 18m/s. At the top of its arc,…
A:
Q: What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work while…
A: Given: Food energy to mobilize (input) (E) = 510 kCal. = 510×4184 = 2133.84×103 J Work done (output)…
Q: 6. A police car o: receive an em increase in spe initial speed o of 3.0 seconds answer in both…
A: Given data m=2400 kgv2=33 m/sW=3.1×105 J Here, m is the mass of the car and W is the work done. Now…
Q: 5698.4 in Hg to Mpa 25.95 Watts to in-lb/min 6469 kg/s to Hp 0.689 Hp to Erg/s
A: 5698.4 in Hg to Mpa1 in of Hg=0.00338639 Mpaso,5698.4 in Hg=0.00338639×5698.4 Mpa…
Q: In a building, building materials are raised using an electric motor with a power consumption of…
A:
Q: #13
A: 9)the power is the energy per unit time or work done per unit time. the work is to be done to rise…
Q: In 45 seconds, a 2.5-ton vehicle can reach 120 mph from rest. Exclude friction losses while…
A: Power is defined as the rate of doing work. It is calculated by dividing work done during a given…
Q: A leaky bucket which initially has 20 L of water and leaks at a constant rate is hanging from a 60 m…
A:
Q: 28. Which of the following processes requires the most work? A person lifts a 1 kg weight 2m off the…
A: Calculate work done in each case. let g=10 m/s2 W=Fscosθ θ=angle between force and displacement…
Q: A lawn roller is pushed 15 meters by a force of 100 N. If the person has used 85 W, how long did it…
A:
Q: 2. A certain 1500.0 kg fancy sports car can accelerate from rest to 30.0 m/s over a distance of 40.0…
A: Given, Mass of car (m) = 1500 kg Initial speed of car(u) = 0 m/s Final speed of car (v)= 30m/s…
Q: 37. A truck of mass 900 kg is travelling along a straight level road against a constant resistance…
A: A truck of mass 900 kg is travelling along a straight level road against a constant resistance of…
Q: A fully loaded, slow-moving freight elevator has a cab with a total mass of 1200 kg, which is…
A:
Q: Using the principle of conservation of mechanical energy, calculate the maximum height achieved by…
A:
Q: 7. A ball is released from rest at a height of 30 m. Ignoring air resistance, determine the GPE, KE,…
A: Given data mass of ball (m) = Weight of the ball = 11.76 N m = 1.19 kg Initial height (h) = 30m…
Q: 79. An airplane pilot fell 370 m after jumping from an aircraft without his parachute opening. He…
A: if work W is done on the object then its KE changes by the magitude of W the KE may increase or…
Q: 5. Water is pumped to a 43 m tall water reserve tower for a small municipality at a rate of 342.0…
A:
Q: In 45 seconds, a 2.5-ton vehicle can reach 120 mph from rest. Exclude friction losses while…
A: Solution:-Given thattime (t)=45 sInitially at restFinal speed (v)=120 mphmass of vehicle (m)=2.5 ton
Q: A 6860 kg car traveling at 41 m/s is at the foot of a hill that rises 491 m in 1.7 km. At the top of…
A:
Q: A 75 kg skier starts with an initial speed of 2 m/s down a 40 m high ramp. They launch off a ramp…
A:
Q: 3. A record was set for stair climbing when a man ran up the 2500 steps of the Empire State Building…
A:
Q: Sam lifts a box with a weight of 12 N to a height of 2 meters. (E-S-A is only necessary for Part…
A:
Q: A leaky 10-kg bucket is lifted from the ground to a height of 12 m at a constant speed with a rope…
A:
Q: 8. Calculate the power required of a 1400kg car under the following circumstances: (a) the car…
A: a) Let the force F required to speed up the car. This can be calculated using Newton’s second law of…
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 ✕ 105 J of useful work…
A: Part(a): Work-done is W=2.10×105 J Food energy is E=510 kcal Note: 1 kcal=4184 J Find: Efficiency of…
Q: Deep in the forest, a 17.0-g leaf falls from a tree and drops straight to the ground. If its initial…
A:
Q: 2. In the figure, a very small toy race car of mass m is released from rest on the loop-the-loop…
A: Let the angle made by the car with the vertical is θ. Applying Newton's second law,…
Q: A pump is required to lift 800 kg of water per minute from a well 13.8 m deep and eject it with a…
A: Here the mass of water lifted per minute = 800 kgdepth of well = h = 13.8m the ejected speed of the…
Q: The engine of a car generates a constant power P. If the car starts from rest, and after t seconds…
A: Power generated by the vehicle is The vehicle starts from rest, that is, initial velocity is After…
Q: ter leaves the h
A: Given: Height is 31 m Diameter is 4 cm Mass is 1000 kg
Q: You give a 5.0 kg box a quick shove up a ramp. It reaches a vertical height of 3.0 m before…
A: m = 5 kg h = 3 m vf = 0 m/s (Eth)f = 100 J g = 10 m/s2
Q: A 1900 kg car is initially traveling 20 m/s. The driver presses down on the accelerator pedal and…
A: The energy possessed by an object , which is in motion , with velocity v is known as the kinetic…
Q: 6. A mass m = 3 kg is dropped from a height of h = 10m onto the top of an incline as drawn below.…
A: Introduction:Initial energy of the mass:Ei=Mgh ....(1) Energy lost on the ramp is the work done…
Q: 23. In one instance, an object (m = 4.0 kg) was located 3.0 m above the ground, and was…
A: The given problem is based on the conservation of energy since the total mechanical energy is the…
Q: 7. Using conservation of mechanical energy concepts, calculate the kinetic energy and velocity of a…
A: The conservation of energy states that 'if there is no external force acting on a system then the…
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images