What is Horizontal: Definition and 978 Discussions
The horizontal branch (HB) is a stage of stellar evolution that immediately follows the red-giant branch in stars whose masses are similar to the Sun's. Horizontal-branch stars are powered by helium fusion in the core (via the triple-alpha process) and by hydrogen fusion (via the CNO cycle) in a shell surrounding the core. The onset of core helium fusion at the tip of the red-giant branch causes substantial changes in stellar structure, resulting in an overall reduction in luminosity, some contraction of the stellar envelope, and the surface reaching higher temperatures.
I have a problem with an answer that I don't know how to arrive at.
There is a 35 kg crate on a horizontal floor that a person is pushing with a 110 N force. The coefficient of static friction is 0.37. What is the maximum value f of s, max for which the crate will not move?
I thought...
so i got a block with mass=m traveling on an oiled surface. the block suffers a viscous resistance given:
F(v)= -cv^{3/2}
the initial speed of the block is v_{o} at x=0, i have to show that the block cannot travel farther than 2mv_{o}^{1/2} /c
so far i have;
ma=-cv^{3/2}
m...
A moving 8.07 kg block collides with a horizonal spring whose spring constant is 372 N/m. The block compresses the spring a maximum distance of 6.87 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.752.
(a) How much work is done by...
A 26.5 kg chandelier hangs from a ceiling on a vertical 4.11 m long wire. What horizontal force would be necessary to displace its position 0.100 m to one side?
I know that the tension on the wire would be 260 N but I still can't figure out the force need to displace it .100
OK, three blocks on a fricionless horizontal surface are in contact on each other, a force is applied to block 1, m1, m2, m3, respectively. And m1=m2=m3.
how come the force of contact that block one exerts on block is F(m2+m3) / (m1+m2+m3) instead of just F*m2/(m1+m2+m3). ( I know that a is...
f(x)=(9x^2-36)/(x^2-9)
I forgot how to get the hotizontal asymptote. Is it f(x)=0?
When I do that, there is no way to solve it
Also, how do I find the intervals for when f is increasing?
I'm not asking for the answer, but the equation, I totally forgot
thanks
Can anyone help me with these 2 problems.. I have been stuck on them :grumpy:
Thanks!
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A car travels 1.14km in the x- direction, then turns left 74.1 degrees to the original direction and travels an additional distance of 3.18km. Calculate the x component of the car's net...
A small steel ball bearing with a mass of 12.0g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.41m. Calculate the horizontal distance the ball would travel if the same spring were aimed 32 degrees for the horizontal...
Figure 1 shows a mass m in equilibrium between two stretched helical springs on a smooth horizontal surface. k_1 and k_2 are the force constants of the springs and e_1 , e_2 are their respective equilibrium extensions.
The mass m is displaced X to one side ( X is smaller than e_1 and e_2 )...
We've installed a 'zip line' and are trying to figure the maximum load it can safely carry. To date, it has handled, without complaint, 210 lbs. This is fine except over time an overload will obviously weaken the cable - we don't want to do that!
The line is a 3/8th inch aircraft cable...
Please help me with this problem! :yuck: :confused: I can't seem to get it set up quite right.
A high diver leaves the end of a 5 m high diving board and strikes the water 1.3s later 3 m beyond the end of the board. Considering the diver as a particle,d etermine a) her initial velocity...
A physics book slides off a horizontal table top with a speed of 1.60m/s . It strikes the floor after a time of 0.440s . Ignore air resistance.
the following are given:
v(0)=1.60
t= 0.440s
ok this is the question
Find the height of the table top above the floor. Take free fall...
A small steel ball bearing with a mass of 11.0 g is on a short compressed spring. When aimed vertically and suddenly released, the spring sends the bearing to a height of 1.37 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 30.0 deg from the horizontal...
i'm having trouble with this problem, so i want to share it with you guys so some of you can briefly describe what is it asking for and how to solve using what fomula... the question is
A ball is fired from the ground with an initial speed of 1.70 x 10^3 m/s (which is approximately five times...
Well I'm going through an introductory calculus book and right now I'm on the section of horizontal asymptotes.
Currently I'm stubbed on this:
y = (x^2 - 1) / (x^2 + 1)
I take the limit of the function as x increases or decreases without bound and come up with y = 1 being the horizontal...
A block of mass 8.0 kg is on the verge of sliding down a 450 incline. What is the magnitude of the horizontal force F, if the coefficient of static friction between the block and the incline is 0.35? I'm really stuck...appreciate any help. Thanks!
I'm having trouble with these two problems. We haven't covered this in class yet, but I have to do them for my lab tomorrow.
1. A package is dropped from a passing plane(moving in the horizontal direction) and produces a projectile motion as it is falling to the ground. If it takes the...
The grade of a hill is a slope and is stated as a percent. What would the horizontal run be for a hill with a vertical rise of 800 feet and a grade of 8%? :confused:
How do i find horizontal asymptotes?
Is there a derivative test for that?
for example how do i find the asymptotes for y=2xe^-x^5 i know that there has to be a horizontal one, are there any others?
Hai all,
In projectiles the horizondal component of their velocity remains constant and veritical compont changes as it gets accelarated.So with this, I think we can find an experiment that gives the accelaration due to gravity(g) without a clock.i.e if we are droping a ball from a...
I think this physics problem deals only with horizontal projection...let me know what you think:
A block slides off a horizontal surface with speed Vo. Write an expression relating y, distance fallen, to X, the horizontal distance traveled.
i think i can use the horizontal proj. equations...
Hey guys,
I am kind of new to this physics thing, and I need some help. Any advice you can give me is more than welcome. :)
1. An 850 kg (1878 lb) dragster, starting from rest, attains a speed of 27.0 m/s (60.5 mph) in 0.59 s.
A. Assume that the driver has a mass of 68 kg. What...
A hollow, thin-walled cylinder and a solid sphere start from rest and roll without slipping down an inclined plane of length 5 m. The cylinder arrives at the bottom of the plane 2.6 s after the sphere. Determine the angle between the inclined plane and the horizontal.
x=Vo + 1/2 at^2 and I...
a crate falls from an airplane flying horizontally at an altitude of 2,000 m. neglecting air drag, howlong will the crate take to strike the ground/ is the formula t = d/v help
Q1. A 3.87 kg block is held in equilibrium on an incline by the horizontal force F. The incline makes a 23.6 degree angle with the horizontal. Determine the magnitude of F. Answer in units of N.
Q2. The distance between two telephone poles is 48 m. When a 1.36 kg bird lands on the telephone...
Hi, I am stuck on even how to start to solve for T
the equations is:
0 = Vi / K (1 - e^-kt)(sin theta) + (g / k^2)(1-kt-e^-kt)
Any suggestions on how to begin to solve for T would be appreciated.
Thanks,
Matt