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At the end of a factory production line, boxes start from rest and slide down a 30° ramp 5.6m long. If the slide is to take no more than 4.3s , what's the maximum allowed frictional coefficient?
Determine two different possible ways for a player to make a free throw in basketball. In both cases give the initial speed, initial angle, and initial height of the basketball.
The drawbridge then starts to rise. The dancer continues to stand on one leg. The drawbridge stops just at the point where the dancer is on the verge of slipping. What is the magnitude f of the fri
A constant horizontal force Fa pushes a 3.20 kg FedEx package across a frictionless floor on which an xy coordinate system has been drawn. The figure below gives the package's x and y velocity compo
100 grams of water is mix to 150 grams of alcohol.The density of alcohol is equal to 790 kg meter. Calculate the specific gravity of total mixture.
A sledge loaded with bricks has a total mass of 17.3 kg and is pulled at constant speed by a rope inclined at 20.° How much work is done by the rope on the sledge?
Neglecting air resistance (on Earth) and variations in the acceleration of gravity with height, how long does it take the projectile on the Moon to reach its maximum height?
A glass sphere has radius R=5.0cm and index of refraction n=1.6. paperweight is constructed by slicing through the sphere along plane that is 2.0 cm from the center of the original sphere,leaving a
The spring sends the bearing to a height of 1.33 m. Calculate the horizontal distance the ball would travel if the same spring were aimed 39.0 deg from the horizontal.
An arrow is aimed horizontally at a bulls-eye 15 m away. If the initial velocity of the arrow is 128 km/hr, how far below the bulls-eye will the arrow strike?
If the ball leaves the bat with a velocity of (a) 25 m/s, vertically downward, and (b) 25 m/s, horizontally back toward the pitcher?
A 365-kg sailboat has an acceleration of 0.48 m/s2 at an angle of 37° north of east. Find the magnitude and direction of the net force that acts on the sailboat.
A straight horizontal line for a time interval of 177 ms. The ball starts from rest. Through what distance does it move before its release?
Block A sits on a table and is in thermal equilibrium with the table. The internal energy of block A is 100 J. Block B sits on the same table and is also in thermal equilibrium with the table. The
A man in a maze makes three consecutive displacements. His first displacement is 6.80 m westward, and the second is 17.0 m northward. At the end of his third displacement he is back to where he star
A flint-glass plate rests on the bottom of an aquarium tank. the plate is 8.00 cm thick(vertical) and covered with water to a depth of 12.0 cm. calculate the apparent thickness of the plate as view
While on the moon, the Apollo astronauts enjoyed the effects of a small gravity. If Neil Armstrong jumped up on the moon with an initial speed of 1.51 m/s to a height of 0.700 m, what amount of gra
It slides while being pushed by the wind with a force of 0.350 N directed along the positive y-axis. Calculate the penguin's speed at t = 7.22 s.
What is the length of the lever arm that must be used to provide a torque of 55.0 N·m with a force of 135 N?
Two stationary point charges + 3.00 nC} and + 2.00 nC} are separated by a distance of 50.0 cm. An electron is released from rest at a point midway between the two charges and moves along the line c
What are the entropy changes of the water that was originally the ice cube (b) as it melts and (c) as it warms to the equilibrium temperature?
The interior of the human body has an electrical resistivity of 0.15 ohm's*m. a) Estimate the resistance for the current flowing the length of your index finger (ignore the much higher resistivity o
What was the maximum temperature (in C)reached by the fuel and the tank on Saturday afternoon? The coefficient of volume expansion of gasoline is 9.5*10^-4 K^-1 , and the tank is made of aluminum
Maximum running speed for 5.73s more before your friend catches you. How far from the bench did you get before being caught? How long did it take for your friend to catch you?
The electron in the Bohr model of the hydrogen atom is assumed to move in a circular orbit while the proton in the electron is the sum of the kinetic energy and electric potential energy EPE. What