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Mars orbits the Sun at a mean orbital radius of 228 Gm (1Gm=10^9m) and has an orbital period of 687 days. Earth orbits the Sun at a mean orbital radius of 149.6Gm (a) The Earth-Sun line sweeps out angle of 360degrees during one earth-year. Approximately what angle is swept out by the Mars-Sun line through one Earth-year? (b) How frequently are Mars and the Sun in opposition (on diametrically opposite sides of the Earth)?
A 9.0 x 10 -2 ice cube at 0.0C is dropped into a Styrofoam cup holding 0.35 kg of water at 12C, Find the amount of ice remaining
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained at 39.0 oC
Start with the thin lens equation and solve for the image distance in terms of the focal length and object distance. Use this to explain why you can expect a real image only
a pipe has a pressure of 2.00 x 105 pa at point a where the cross-sectional area is 0.100 m2. the speed of the water in
To avoid a rear-end collision with a slow moving vehicle ahead, you step on the accelerator and increase your angular speed to 13.4 x 10-2 rads/s in a time of 8 s. What is the tangential acceleration of the car
two point charges of equal magnitude are 7.8 cm apart. at the midpoint of the line connecting them their combined
Assume that while pecking on a tree the woodpecker's head comes to a stop from an initial velocity of 0.7 m/s over a distance of 0.003 m. Evaluate the magnitude of the corresponding deceleration in units of the acceleration due to gravity g. What is ..
An electric fan is running on HIGH. After the LOW button ispressed, the angular speed of the fan decreases to 83.8 rad/s in1.75 s. Determine the intial angular speed of the fan
a narrow slit is illuminated with light of wavelength 590 nm. a diffraction pattern is produced on a screen positioned
A car heading north collides at an intersection with a truck heading east. If they lock together and travel at 28 m/s at 22° north of east just after the collision
A 2.0{\rm mm} -diameter ball bearing has 3.0×109 excess electrons. What is the ball bearing's potential
a quasars spectrum shows a shift in spectral lines of 0.158. Use the doppler-shift formula to determine what recession velocity this shift indicates, calculate the recession velocity in kms per second
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