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A) Astronomers on planet Zog whose sun is 1.4 x 10^11 m away, measure their solar flux to be 1250 W/m^2. What is their sun's total energy output?
B) The astronomers on Zog find that their sun's spectrum agrees with that of a blackbody of temperture 5500 K. What is the radius of their sun?
C) Astronomers on Earth observe a radiant power of 10.6 x 10^-9 W/m^2 for the star which is the sun for planet Zog. How far away is this from Earth in m?
D) Astronomers would more likely report this distance in parsecs. How far away is it in parsecs?
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
A toy cannon uses a spring to project a 5.28 g soft rubber ball. The spring is originally compressed by 5.06 cm and has a force constant of 8.08 N/m. At what point does the ball have maximum speed
The car encounters a loop of radius R = 18 m at ground level. As you will learn in the course of this problem, the initial height 54.00 m is great enough so that the car never loses contact with the track.
A 2.50 g lead bullet traveling at 560 m/s strikes a target, converting its kinetic energy into thermal energy. It's initial temperature is 40.0°C. Find the heat required to melt the bullet
A person exerts a horizontal force of F = 175 N in the test apparatus shown in the drawing. (h = 0.25 m.) Find the horizontal force M that his flexor muscle exerts on his forearm.
a grandfather clock is controlled by a swinging brass pendulum that is 1.2 m long at a temperature of 21degc. a what is
A 6-g bullet is fired into a 1.2-kg pendulum of length 83 cm. The pendulum swings by 12 degrees. What was the initial speed of the bullet? Please explain!!
We supply 132.4 Joules of heat to an engine with 15.60% efficiency. How much work can the engine do
In the absence of air resistance, a projectile is launched from and returns to ground level. It follows a trajectory similar to that , What is the new range
what is the best way to study and prepare for a physics exam? and the questions are from the book and i freak myself
A ball of mass 0.55 kg moves around a vertical circle of radius 1.2 m. Find the tension of the string T
a block of mass 2 kg is initially moving with speed 4msec at point a on a smooth inclined plane with andle 60 degrees
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