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An asteroid of mass 2.3×10^5kg , traveling at a speed of 21km/s relative to the Earth, hits the Earth at the equator tangentially, and in the direction of Earth's rotation. Use angular momentum to estimate the percent change in the angular speed of the Earth as a result of the collision.
A child and an adult are walking. Their legs swing like physical pendulums and both swing through the same maximum angle. what is the walking speed of the child
the right triangle with vertex P at the origin, base b, Determine the potential at the vertex P
Two identical conducting spheres, fixed in place, attract each other with a force of 0.094 N when their center to center separation is 60.00 cm. What was the initial negative charge on one of the spheres
A hemispherical shell of radius a=1 cm has a surface charge density of m=4.00 uC/m^2. What is the magnitude of the electric field produced by the shell at the spherical center
A student sitting on a frictionless rotating stool has rotational inertia 0.97 kg*m2 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
The electric field on the axis of a uniformly charged ring has magnitude 360 kN/C at a point 5.6cm from the ring center. Find the ring's charge
The mass of a bottom quark is \(4.2 GeV/c^{2}\), What was the energy of the proton beam and how fast were they moving
A 8.00 nF capacitor is connected to a battery and is charged to a maximum charge of 7.40 ?C through a 1.60 k? resistor. What is the voltage of the battery
water flows between two parallel plates separated by a distance of h. there is a pressure gradient along x which is constant, find the pressure gradient
The Specific heat capacity at constant pressure of a gas varies with the temperature according to the expression: C_p = ( a + bT - c/T^(2) )
At Water-Country NH there is a ride called the "Double Geronimo" which is described as an "Extreme Body Slide". how fast would the rider be moving at the bottom of the slide
A centrifuge spins small tubes in a circle of radius 21 cm at a rate of 1419 rev/min. What is the centripetal force on a sample that has a mass of 5 g
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