List at least 2 different sources of renewable
energy. For each of these renewable energy sources that
you listed, explain at least one positive aspect of it and one
negative aspect of it.
Barium has a work function of 2.48 eV. What is the maximum
kinetic energy of electrons if the metal is illuminated by UV light
of wavelength 420 nm?
eV
What is their speed?
m/s
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.30 * 106 N, one at an angle 13.0° west of north, and the other at an angle 13.0° east of north, as they pull the tanker a distance 0.650 km toward the north.
Part A
What is the total work done by the two tugboats on the supertanker?Express your answer in joules, to three significant figures.
Part B
What is the total work done by the...
Identify financing sources for implementing a solar energy
project in Kenya. Consider different sources for funding this
global business enterprise. (Large companies may sell stock, issue
bonds, and obtain loans. Smaller organizations might make use of
personal investors, small business loans, venture capital sources,
or government-guaranteed loans.)
A ring of radius 2 m weighs 100 kg. It rolls along a horizontal floor so that its centre of mass has a speed of 20 cm/s. How much work has to be done to stop it?
According to the first law of thermodynamics, work done bya system will cause _______ in the internal energy, assuming that no heat is transferred to or from the system. Select the correct answer below: a decrease consistent fluctuation an increase no change
Provide three examples of a
biological organism converting one form of energy into
another*. For each example, include:
1.What form of energy do you start with and what form of energy is
it converted into?
2.What does this allow the organism to do?
Finally, answer: is this conversion 100% efficient, and why or why
not?
*Note: do not re-use the same forms of energy in the same order.
For example, if your first example involves the conversion of
chemical energy into...