Recall that there are four fundamental forces: the gravitational
force, the electromagnetic force, the weak nuclear force, and the
strong nuclear force. Select any two of these forces and compare
them. Consider their relative strengths, the range of distances
over which they operate, and why they are important.
Kinetic friction is a constant-value force, while static
friction changed in response to other forces, up to some
maximum. Why is this the case? What if static friction
behaved more like kinetic friction, with same constant value?
1) State the work-kinetic energy theorem with friction force
acting on the system ?
2) For a rigid object undergoing circular motion, show that the
tangential acceleration for each point on the object is given by ??
= ??.?
3) A particle starts from the origin with velocity 5 ?̂m/s at t
= 0 and moves in the xy plane with a varying acceleration given by
?⃗ = (2? ?̂+ 6√? ?̂), where ?⃗ is in meters per second squared...
Which of the following forces is involved in physical adsorption?
a) Gravitational force
b) Magnetic force
c) Van der Waals force
d) Electromagnetic force
1)
can an object bothbhave kinetic energy and gravitational energy at
the same time? Explain.
2)if an object has 6J of gravitational energy, in what process
can it do 6J of work?
3) if a spring has 6J of elastic energy, in what process can
it do 6J of work?
Please help me answer the previous questions( I will give a
good rating) thank you!
1. At the level of the atom, both electric force and
gravitational force can be evaluated for the interaction between
protons and electrons. Which is dominant?
a. The gravitational force
b. The electric force
c. Both forces are approximately equal
d. Neither force is very strong at the atomic level
e. Two of the above are correct
2. A student rubs a balloon in her hair then holds the balloon
against a wall and finally releases it after a moment....
Friction lab Analysis: 1. HOW I CAN Construct a graph of
friction vs Normal force. Can I plot both Static and Kinetic
friction on a single Excel Graph and how. 2. How can I use this
graph to find the coefficient of static and kinetic friction?
(Hint: Think about how we found mass in the Newton’s second law
experiment)
Total Mass (kg)
Normal force (N)
Peak static friction (N)
Average Kinetic friction (N)
0.001
0.12
0.07
0.176
0.21
0.14
0.193...
1)What do we mean by net force and net work.
2) what’s the difference between kinetic, potential,elastic
mechanical, internal and thermal energy and what’s the difference
between work and energy.
3) bernoulli’s principle of fluids stated that net work is the sum
of differences in kinetic energy and potential energy.
But While I was studying the notion of work done by
conservative and nonconservative forces they stated that net work
is only the difference in kinetic energy while - delta...
1.
Prepare an explanation of the nonconserved work of pulling and
friction forces. Observe what happens when you rub your hands
together quickly. Also, observe what happens when you hold a heavy
book out to your side for as long as you can. What form do you
think the friction and muscle work would take?