Number of results: 152,091
A startled armadillo leaps upward rising 0.547 m in the first 0.202 s. (a) What is its initial speed as it leaves the ground? _____m/s (b) What is its speed at the height of 0.547 m? _____m/s (c) How much higher does it go? _____m Use distance vs time: d=vi*t - 1/2 g t^2 solve...
Thursday, January 25, 2007 at 5:48am by TechnoBoi11
A rock is thrown verticaly upward from ground level at time t = 0. At t = 1.65 s it passes the top of a tall tower, and 0.95 s later it reaches its maximum height. What is the height of the tower? height = _______ m First, find the initial velocity from the height of the tower...
Thursday, January 25, 2007 at 5:53am by TechnoBoi11
A ball is thrown vertically downward from the top of a 35.9-m tall building. The ball then passes the top of a window that is 10.7 m above the ground 2.00 s after being thrown. What is the speed of the ball as it passes the top of the window? The equation for the speed of the ...
Thursday, January 25, 2007 at 4:14pm by TechnoBoi11
Physics - Science
Imagine a hollow sphere of radius R and mass M. It is welded to the end of a solid rod of length L, whose mass is also M. The rod is attached to the sphere in such a way that the whole assembly, when viewed from the side, looks like a lollipop. (That is, the axis of the rod, ...
Monday, April 16, 2007 at 10:13am by Roxy
i dont understand why radioactive waste is stored underground is it because it is a harmful substance
Thursday, April 10, 2008 at 10:52am by exam in 3 weeks
Thursday, April 10, 2008 at 10:52am by Writeacher
My thoughts were posted at your original post.
Thursday, April 10, 2008 at 10:52am by DrBob222
My teacher put Marti Gras beads in a plastic beaker she pulled some beads out and let them fall to the ground. It looked as if the beads were not touching the rim of the beaker and was just flying over it. What exactly was it doing?
Sunday, August 17, 2008 at 9:32pm by kayla
If the plastic beads and the plastic beaker were electrically charged with the same kind of charge, how would they interact? I assume the beads are very light. When they were "poured" out of the beaker, What would the electrically charged beaker do to the beads? You may want ...
Sunday, August 17, 2008 at 9:32pm by GK
physics - science
- two identical lead spheres have a combined mass of 12kg. the density of lead is 11400 kg m-3. find the radius of each sphere. calculate the gravitational force of attraction between the 2 spheres when they are touching. -two masses, one of 300g and one of 500g are placed ...
Tuesday, September 16, 2008 at 8:53am by ally
physics - science
I will be happy to critique your thinking on these.
Tuesday, September 16, 2008 at 8:53am by bobpursley
9th grade science
what three ways can you charge an object?- grade 9 physics(science)
Thursday, January 8, 2009 at 5:37pm by elizabeth
. Phobos is the larger and closer of Marsís two moons. It has no atmosphere, a mean radius of 11 km, an albedo of 0.07, and an emissivity of 1.0. (i) Assuming that the radiative temperature of Phobos is 222 K and that it is spherical, what is its mean distance from the sun? (...
Saturday, January 23, 2010 at 4:16pm by Sheena
(i) Perform an energy balance using the irradiance of the sun at the Mars location (Hsun) and the thermal emission of Mars: 0.93* pi* R^2 * Hsun = 1.0 * sigma* T^4* 4*pi R^2 + 0.07* pi* R^2 * Hsun The R^2 terms cancel out. You know that T = 222 K. Solve for R, the mean ...
Saturday, January 23, 2010 at 4:16pm by drwls
1. It is believed that in the Archeaneon (2.5-4 billion years ago) the sunís radiative output was 30% less than it is today. (i) What would the temperature of the sun have been at that time? (ii) At what wavelength would the peak emission from the sun have been? (iii) Ignoring...
Saturday, January 23, 2010 at 5:44pm by Sheena
Phobos is the larger and closer of Marsís two moons. It has no atmosphere, a mean radius of 11 km, an albedo of 0.07, and an emissivity of 1.0. (i) Assuming that the radiative temperature of Phobos is 222 K and that it is spherical, what is its mean distance from the sun? (ii...
Sunday, January 24, 2010 at 4:50pm by physics help!
How does a derivation differ from an experiment or a theory?
Saturday, May 29, 2010 at 4:02am by Richard
A derivation does not require an experiment, if it can be DERIVED mathematically from an accepted Law or Theory. It can also be used to experimentally test a theory. E = mc^2 is a derivation from the Special Theory of Relativity. It has been verified experimentally. The ...
Saturday, May 29, 2010 at 4:02am by drwls
Cars A and B, each moving at 70 km/h, are approaching one another on a straight highway. After how many seconds will they meet if they were initially 1 km apart?
Sunday, September 5, 2010 at 4:29am by Ryan Jude
Hi, For my physics class, we have to design our own experiments to calculate the amount of power exerted for each situation. However, I'm really unsure of how to go about finding the power for the situations. The first situation is doing a push-up, and the second is pushing a ...
Thursday, October 25, 2012 at 5:34am by Krissy