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A satellite moves in an elliptical orbit about the Earth such that, at perigee and apogee po- sitions, the distances from the Earth's center are, respectively, D and 3.1D.
Find the ratio vp of the speeds.
The answer to the question above is 3.1 but I'm not sure how to do the question below.
Find the ratio Ep of the energies.
1. 2.5
2. 1.0
3. 9.3
4. 1.3
5. 2.0
6. 3.2
7. 6.9
8. 5.1
9. 4.6
10) 6.0
if you have a 20 by 20 square opening and you need an equalaterial triangle to span the opening what are the smallest
A crate is pulled to the right with a force of 74.6 Newton, to the left with a force of 124.4 N, upward with a force of 655.8 N, and downward with a force of 245.7 N. Find the net external force in the x direction
A 1.0-cm-tall object is 60 cm in front of a diverging lens that has a -30 cm focal length. Calculate the image position
If 19.00 mol of helium gas is at 19.0oC and a gauge pressure of 0.310 atm. Calculate the volume of the helium gas under these conditions.
A 30.0- goldfinch lands on a slender branch, where it oscillates up and down with simple harmonic motion of amplitude 3.50×10?2 and period 1.50. What is the maximum speed of the goldfinch
A 43 power refracting telescope (wherepower is the angular magnification) has an eyepiece with a focallength of 4.2 cm. How long is the telescope
Show that the density of an ideal gas occupying a volume V isgiven by ρ = PM/RT, where M is the molar mass. Show this bycalculating the following three quantities in terms of M, P, n, R,and T. Determine the density of oxygen gas at atmospheric pres..
A car takes 16 s to go from v = 0 to v = 50 m/s at approximately constant acceleration. If you wish to find the distance travelled using the equation d = 1/2 at2, what value should you use for a.
Find the charge on the capacitor and current in the resistor after a time of (a) 1.0 s and (b) 10 s.
An electric heater used to boil small amounts of water consistsof a 15-Ω coil that is immersed directly in the water. Itoperates from a 120-V socket. How much times is required for thsiheater to raise the temperature of 0.5 kg of water from 13degrees..
What would happen if you dropped a marshmallow on a Neutron star? Neutron stars have about the same mass as our sun, but have a much smaller diameter, only about 20km.
A nonreflecting single layer of a lens coating is to be deposited on a lens of refractive index n=1.78. Find the refractive index of a coating material
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