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A day on a distant planet observed orbiting a nearby star is 41.9 hours. Also, a year on the planet lasts 48.9 Earth days.* Calculate the average angular speed of the planet about its own axis of rotation in radians per second, with the second as measured on Earth. (tried 2.315 but it was said to be wrong) Calculate the average angular speed of the planet as it travels around its neighboring star, with the second as measured on Earth. (Tried 3.64, but it was also said to be wrong)
In reaching her destination, a backpacker walks with an average velocity of 1.05 m/s, due west. How far did she walk
An object fired at an angle of 19.1° above the horizontal takes 2.61 s to travel the last 15.3 m of its vertical distance and the last 10.3 m of its horizontal distance. With what speed was the object launched
A 2.5 ball and a 3.5 ball, each moving at 0.90 , undergo a head-on collision. The lighter ball rebounds opposite its initial direction, with speed 0.90. a) Find the post-collision velocity of the heavier ball.
Consider a reference frame associated with a free falling cabin, which is moving with an acceleration of g = 9.8m/s^2. At time t=0 the cabin is at rest. Is this reference frame inertial
machine part rotates at an angular speed of 0.46 rad/s; its speed is then increased to 2.0 rad/s at an angular acceleration of 0.59 rad/s2
A 0.79-kg block is hung from and stretches a spring that is attached to the ceiling. What is the mass of the second block
By curving different isotopes through paths with different radii, a mass spectrometer can be used to purify a sample of mixed uranium-235 and uranium-238 isotopes. Assume that B = 5.00*10^-3 T, V = 55.0 V, and that each uranium isotope has a 5+ io..
An ancient club is found that contains 120.00 g of pure carbon and has an activity of 7 decays per second. Determine its age assuming that in living trees the ratio of 14C/12C atoms is about 1.10x10-12. Note that half life of carbon-14 is 5700 yea..
A 23.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 33.0° with the vertical, find the child's speed at the lowest position
A 101 Frisbee is 22 in diameter and has about half its mass spread uniformly in a disk and the other half concentrated in the rim. What is the magnitude of the torque
An object 6 cm high is placed 30 cm from a concave mirror of focal length 10 cm, Calculate size of image
A stationary spherical conductor with a radius of 2.00 cm has a potential of -257 V on the surface. What is the impact speed of the proton
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