How much work is done when a 145 gg tomato is lifted 11.7 mm ?
How much work is done when a 185 g tomato is lifted 10.6 m ? The tomato is dropped. What is the velocity, v, of the tomato when it hits the ground? Assume 90.9 % of the work done in Part A is transferred to kinetic energy, E, by the time the tomato hits the ground. Express your answer with the appropriate units.
How much work must be done to stop a 1200-kg car traveling at 145 km/h ?
How much energy is released when 35.4 gg of water freezes? The heat of fusion for water is 6.02 kJ/molkJ/mol.
1. a) How much work is done by/on the system when is taken from
point a to point b following the
path indicated in the figure?
b) How much heat is absorbed/released by the system when is
taken from point a to point b
following the path indicated in the figure? Express your answer in
kJ
c) What is the change in internal energy, ?U? Express your
answer in kJ.
2. a) How much work is done on the system...
4. How much work is done when an electron passes through a 20.000 V potential (in electron volts and in Joules)?
An object can possess kinetic energy, the energy of motion, and/or potential energy, the energy of position. Energy can be transferred in many ways, one of which is in the form of work. Work, w, is the energy transferred when an object is caused to move a distance, d, against a force, F. Mathematically, we would write this as w=Fd Force is the product of mass, m, and acceleration, a: F=ma When the acceleration is due to gravity, the symbol...
How much work is done, in joules, when a piston expands from 11.4 L to 13.6 L against a pressure of 3.0 atm?
A 0.16 pinecone falls 17 to the ground, where it lands with a speedof12 .How much work was done on the pinecone by airresistance?What was the average force of air resistanceexerted on the pinecone?
A 5.0 kg mass is initially sitting on the floor when it is lifted onto a table 1.15 meters high at a constant speed. a) How much work will be done in lifitng this mass onto the table? b) What will be the gravitational potential energy of this mass, relative to the floor, once it is placed on the table? c) What was the initial gravitational potential energy, relative to the floor, of this mass while sitting on the floor?
A student lifted a box of mass m to height h. The work done by each the student and the gravitational force (mg), respectively are: Select one: a. negative, positive b. positive, positive c. positive, negative d. negative, negative