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The mass of a star is 1.75·1031 kg and it performs one rotation in 37.3 days. Find its new period (in /days) if the diameter suddenly shrinks to 0.77 times its present size. Assume a uniform mass distribution before and after.
If a person were to push hardly on a solid wall will the work be done? Also, why would it be exhausting to push hardly against this solid wall?
A coil of wire containing N turns is in an external magnetic field that is perpendicular to the plane of the coil and it steadily changing, what will be the induced emf in the coil
A charged particle is moving horizontally westward with a velocity of 3.5 × 106 m/s in a region, What is the charge on the particle
You fly your 20.0m -long spaceship at a speed of c/ 4 relative to your friend. determine the speed of your friend relative to you
a red car and a green car move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the green car is at xg = 211 m, What are the acceleration of the green car
Suppose the velocity of a bug as a function of time is given by the following function between 0 and 2 s, Find the average speed of the bug for the whole two second trip
In order to drink from your glass you first need to lift it to your mouth. As you begin to lift your 0.20 kg glass of water, it is accelerating upwards at 0.090 m, What is the net force acting on the glass
A sphere of radius r =34.5 cm and massm = 1.80 kg starts from rest and rolls without slipping down a 30.0? incline that is 10.0 m long. Calculate its translational speed when it reaches the bottom
How far does the car go before it stops. An advertisement claims that a sportscar can accelerate from rest to 100 km/hr in 7.70 s.
Suppose that you wish to fabricate a uniform wire out of 0.950 g of copper. Assume the wire has a resistance R = 0.600 ?, and all of the copper is used. What will be the length of the wire
q1. a student pulls a box of books on a smooth horizontal floor with a force of 100 n in a direction of 37 degrees
monochromatic light strikes a diffraction grating at normal incidence before illuminating a screen 1.93 m away. compute the distance between the two second order maxima?
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