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A 60 kg boy and a 40 kg girl both wearing skates face eachother at rest on a frictionless ice surface. The boy then pushes the girl away sending her eastward with a speed of 4 m/s. what is the resulting speed and direction of the boy?
A 280 g block on a 50.00 cm-long string swings in a circle on a horizontal, frictionless table at 70 rpm.
Using Newton's Version of Kepler's Third Law II Calculate the orbital period of the Space Shuttle in an orbit 200 above Earth's surface. Express your answer using two significant figures. T= s
The train on the right accelerates leftward at 0.82 m/s2.How far does train on the left travel before the front ends of the trains pass.
A 3.500 kg puppet oscillates at the end of a light spring of constant k = 8.00 N/m. What is the frequency of the oscillations
A bullet of mass 30 g collides completely inelastically with a ballistic pendulum of mass 2.5 kg. Calculate the velocity of the bullet right before it collides with the pendulum
q1. a snowmobile climbs a hill at velocity v-up. the slope of the hill is a 2 ft rise for every 70 ft of distance. the
The orbits of synchronous communications satellites have been chosen so that viewed from Earth they appear to be stationary. Find the radius of the orbits
Consider an electron constrained to travel in a one-dimensional box of length L. What is the length L of the one-dimensional box
Find the typical speed for a tsunami. (Note down that in the open ocean, tsunamis generally have amplitude of less than a meter, allowing them to pass ships unnoticed. As they approach shore, however, water depth decreases and the waves slow down. Th..
A 3.65 kg particle is located on the x-axis at xm =?8 m, find the coordinate of the center of mass of this two-particle system
Two identical +9.5 uC point charges are initially 3.5cm apart from each other. If they are released at the same instant from rest, how fast will each be moving as they are very far away from each other? Assume they have identical masses of 1 mg.
A person is observing the motion of a ball on a flat surface and measuring its position in time. What will be the velocity of the ball relatively to each of the two observers
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