4. How many joules of energy does a 100-watt light bulb use per hour? How fast would a 70-kg person have to run to have that amount of kinetic energy?
Q: 9. A 40 kg roller coaster car starts from rest at location A. assuming negligible energy losses to…
A: Law of Conservation of energy tells us that total energy assosiated by a object remains same in case…
Q: 2. A 60 kg skier slides down a hill, and their potential energy versus horizontal position (x) is…
A:
Q: A car accelerates from rest to 30kph. La Which takes more energy, going from C 0 to 30kph b. 30 to…
A: Given A car accelerates from rest to 30kph. Later, on a highway it accelerates from 30kph to 60kph
Q: A machine gun fires 360 bullets per minute. Each bullet has a mass of 5 grams and travels at 600…
A: Given: A machine gun fires 360 bullets per minute. mass each bullet of 5 grams v = 600 m/s To…
Q: 6. A 0.150 kg baseball is moving 20.0 m/s. A bat hits it, doing 15.0 J of Work on it. What is the…
A: work energy theorem Wnet=change in kinetic energyWnet=∆KEWnet=KEfinal-KEinitialWnet=…
Q: 7. A container factory use a 370 W motor to operate a conveyor belt that lifts containers from one…
A: Given Mass lifted m = 250 kg Displacement h = 3.6 m Time taken t= 45 s Power P = 370 W
Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…
A: The rate of doing work is called power.
Q: How much work is done (how much energy is required) to accelerate a 1987.5 kg car entering the…
A: According to work-energy theorem work done is equals to changes in between Final kinetic energy and…
Q: 2. Larry and Moe carelessly lean against a 300 kg piano. It teeters off the edge of a 1.50 meter…
A:
Q: 4. How work done is related to gravitational potential and kinetic energies? Also discuss the total…
A: 4. How work done is related to gravitational potential and kinetic energies? Let us consider we are…
Q: Initial O v = 0 Final Y = 0 A 14 kg ball initially at rest rolls down a 142 m tall hill. When the…
A: Given: The initial speed of the ball is 0 m/s. The final speed of the ball is 31.1 m/s. The height…
Q: . A 6N force acts on a 5kg mass over a distance of 3m. What is the work done on the object? If the…
A:
Q: 4. A roller coaster car tops the highest point of the ride (200 ft above the ground) at 10 ft/s .…
A: conservation of Mechanical Energy states: total amount of mechanical energy in a closed system in…
Q: A 60kg woman does a step-up/step-down task using a 25cm platform. A full step cycle consists of a…
A: Given, mass=60 kg h=25 cm =0.25 m a. Energy needed to complete 1 step-up= mgh=60×9.8×0.25=147…
Q: 4. A box of mass m= 2.0 kg initially at the bottom of a ramp is given a brief hard shove up the ramp…
A: If there was no energy loss then the bag would come back with the same kinetic energy i.e. with the…
Q: 2. A 59 kg person climbs up the stairs with a height of 5.5 m. a.How much work does the person do?…
A: Given , Mass of person( m) = 59 kg Height climbed by person (h)= 5.5 m
Q: 15. A car is traveling to the right at 20 m/s, which gives it a kinetic energy, K. A second…
A:
Q: 8. A block is moving with 52.0 J of KE. A 12.0N force pulls the block straight forward for 3.00 m.…
A:
Q: pa 21° incline w
A: Given: Mass of bundle is 6.2 Kg Incline is 21o Kinetic energy is 144 J Kinetic friction coefficient…
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: An airplane heads due east at 110 m/s through a 25 m/s cross wind blowing from north to south. The…
A: Note: As per Bartleby's rule, only one question should be answered. Kindly resubmit the other…
Q: What is the difference between when work is done by a system and when work is done on a system? a.…
A: Introduction :- Here we need to think about the concept of energy (internal energy) which depends…
Q: 1. A Roller Coaster showing in the picture bellow of mass of M=149 Kg is moving through the 3 hills…
A:
Q: Problem 9: You leave a 110 W light bulb on for 6 hours in the day. Part (a) Express energy through…
A: Power is defined as the energy quantity that is absorbed or provided over a time period to do a…
Q: The average power output of the human heart is 1.33 watts.(a) How much energy does the heart produce…
A: Power is Time is Note:Find:(a) Energy produces by human heart in one day.(b) Estimate the height a…
Q: . An alien spacecraft wishes to visit Earth, but in order to do so it must first escape its hom…
A: The velocity of an object refers to its rate of change of position as a vector quantity. escape…
Q: A 70-kg hiker hikes from an elevation of 1,209 m to an elevation 2,199 m. i. What is the hiker’s…
A: i) As the hiker moves from a lower elevation to a higher one the gravitational potential energy of…
Q: Consider a lightbulb rated for a power of 20 watts. This lightbulb consumes a certain amount of…
A:
Q: 29. In problem no.28, in a simple rectilinear * motion, a mass of 100 Kg is given an acceleration of…
A:
Q: A block is moving with 52.0 J of KE. A 12.0 N force pulls the block straight back, against the…
A: Given data: Initial Kinetic Energy (KEi) = 52.0 J Force (F) = 12.0 N, straight backward Displacement…
Q: 5. How much work is done (how much energy is required) to accelerate a 1987.5 kg car entering the…
A: Given: The mass of the car is 1987.5 kg. The initial speed of the car is 18.271125 m/s. The final…
Q: 3. A piece of shattered glass falls from the 82nd floor of a building. 600 feet above the ground.…
A:
Q: A spring with spring constant k is attached to the floor, standing vertically. You place a box of…
A: The mass of the box is m.The spring constant is k.The acceleration due to gravity is g
Q: A 100-W light bulb is left on for 10.0 hours. Over this period of time, how much energy was used by…
A: Given that,Power of bulb,P=100 wattTime for which bulb is left turn on, t=10 hours=10×3600 sec=36000…
Q: 16. A person runs at a speed of 4.50 m/s uses 760 J of energy. Solve for the person's mass. (ans:…
A:
Q: 3. A rock weighs 700 g and has a potential energy of 1 500 J. What height is it found at?
A:
Q: If you have a ball with a mass of 6.00kg, that has an initial velocity of vA=(2.00i + 5.00j)m/s and…
A: Given value--- mass = 6 kg. initial velocity =( 2i + 5j ) m/s. final velocity = (-2i + 8j) m/s. We…
Q: 7. The work done by gravity in lowering a 3.0 [kg] box from an initial height to the ground is 15…
A: Given: The mass of the object is 3 kg. The work done by gravity is gravity is 15 J. The…
Q: he energy efficiency of electric vehicles is usually rated in terms of the kilowatt-hours (of…
A: The kWh/100 miles rating is more important for evaluating EV running expenses than MPGe. The…
Trending now
This is a popular solution!
Step by step
Solved in 2 steps