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Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 5.8 x 1028 kilogram and 1.5 x 103 meter.
(a) Determine the density of such a star.
(b) If a dime (V = 2.0 x 10-7 m3) were made from this material, determine how much would it weight (in pounds)?
An airplane has a mass of 1.7x10^6kg and the air flows past the lower surface of the wings at 96 m/s. If the wings have a surface area of 1200m^2, how fast must the air flow over the upper surface of the wing if the plane is to stay in the air?
A car uniformly decelerates at a rate of -5.00 m/s^2. How far does the car travel after 1.5 seconds if it initially was moving at a speed of 25 m/s
What is the energy in eV of (a) a 100 MHz radio-frequency photon, (b) a visible light photon with a wavelength of 500 nm, and (c) an X-ray photon with a wavelength of 0.10 nm?
A girl of mass 42 kilogram throws a ball of mass 0.5 kilogram against a wall. Obtain the average force exerted on wall by the ball
A proton has a charge of e= 1.6 x 10-19 C. Calculate the electic field produced by the proton 10 cm away. What is the magnitude of the electric potential at thesame position (10cm)?
If light is measured traveling through some medium at 0.90c, where c represents the speed of light in a vacuum, what is the index of refraction of the medium
A charged particle travels undeflected through perpendicular electric and magnetic fields whose magnitudes are 5000N/C, Find the speed of the particle if it is a proton
An athlete starts at point A and runs at a constant speed of 7.00 m/s around a round track 250 m in diameter? Find the x component of this runner's average velocity between points A and B.
A single lens is used to cast an image on a screen that is 60 centimeter from the lens. The image is three times the size of the object. Compute the focal length of the lens
a block of mass m sliding on a frictionless table is attached to a horizontal string that passes through a tiny hole in
A 550 N physics student stands on a bathroom scale in an elevator. As the elevator starts moving, the scale reads 450N. (a) Find the acceleration of the elevator. Find the mass of the worker.
A point charge causes an electric flux of (-300)N*m2/C to pass through a spherical Gaussian surface of11.0 cm radius centered on the charge. how much flux would pass through the surface
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