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As an egg develops into a chicken, its contents become more ordered. Does this violate the law of increasing entropy? Why?
A packing crate is placed on a plane inclined at an angle of 35o from horizontal. If the coefficient of static friction between the crate and the plane is 0.65
What is the acceleration (due to gravity) of the satellite in orbit? (in meters/second^2).
A horizontal force of 3.00 N is applied to a 1.00-kg radio, initially at rest on a table with a level surface.
A 0.0050-kg bullet traveling with a speed of 200 m/s penetrates a large wooden fence post to a depth of 0.030 m.
Determine (a) the initial vertical acceleration of the rocket, (b) its velocity after 8 seconds, and (c) how long it takes to reach an altitude of 9500m.
A ball is launched up a semicircular chute in such a way that at the top of the chute, just before it goes into free fall.
The 100 kg block in the figure takes 5.50 s to reach the floor after being released from rest. A. What is the mass of the block on the left?
Discuss the dependence of the tension force on T. If you increase the T of a rubber band, does it (tend to) expand or contract?
The 16-lb block A is released from rest in the position sho Neglecting the effect of friction and the masses of the pulleys, determine th velocity
A 5.0-kg block at rest on a frictionless surface is acted on by forces F1 = 5.5 N and F2 = 3.5 N. What additional horizontal force will keep the block at rest?
Find the tension in the strings when the air flow is turned off and the coefficient of friction between the glider and the track is 0.47.
During a violent thunderstorm, hail of diameter 1.0 cm falls directly downward at speed of 25m/s.
The graph has velocit on the y axis in m/s and the x axis is time in seconds. The points given make the grph line.
How many kg of sand would it take for the total surface area of all the grains of sand to equal the surface area of the cube? in units of kg.
How fast will car A have to travel from rest in order to catch up to car B over a distance of 3 miles? How long will it take for car A to catch car B?
Jane, whose mass is 50.0kg, needs to swing accross a river(having width of D) filled with man-eating crocodiles to save Taezan from danger
What apparent free-fall acceleration is experienced by the 50 crew members remaining on the rim of the station.
There are two masses hanging down off the sides of a table connected with a spring between them. Describe what will happen and what value the spring scale
Find the velocity of the axle of the tire relative to a fixed point on the ground, v_pg(t) .
Four charges are placed at the corners of a square, where q is positive. Initially there is no charge in the center of the square.
A wheel is revolving at 20.0 rad/s when a brake is engaged and the wheel is brought to a uniform stop in 15.92 revolutions.
Is there a mathematical relationship between either applied force and velocity, applied force and acceleration, both, or neither? Explain.
Two identical spheres of mass 0.1 g each carrying identical charges are suspended from the same point by two weightless threads each of length 1.3 m
A cyclist competes in a one-lap race arond a flat, circular course of radius r. Starting from rest and speeding up at a constant rate throughout the race.