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A winch is used to drag a 300 N crate up a ramp at a constant speed of 68.0 cm/s by means of a rope that pulls parallel to the surface of the ramp. The rope slopes upward at 35.0 degrees above the horizontal, and the coefficient of kinetic friction between the ramp and the crate is 0.290
A. What is the tension in the rope?
B. If the rope were suddenly to snap, what would be the acceleration of the crate immediately after the rope broke.
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 2 state, What is the energy of the Hydrogen atom
A 200 kg communications satellite is placed into a circularorbit around the Earth with a radius of 4.23 x 107m(26,000 miles). Find the gravitational force on the satellite
One sphere is negatively charged, with net charge -2.25 mu C, and other sphere is positively charged, with net charge 4.00 mu C. The charge is uniformly distributed within the volume of each sphere.
The center fielder for the school's baseball team throws a 0.150-kg baseball towards home plate at a speed of 26.0 m/s, What is the kinetic energy of the baseball
A 1400 kg car carrying four 96 kg people travels over a "washboard" dirt road with corrugations 4.5 m apart. by how much does the car body rise on its suspension
As an electron moves through a region of space, its speed decreases from 6.40 106 m/s to 2.20 106 m/s. Did the electron move to a higher potential or a lower potential
What is the minimum frequency of light needed to free an electron from a neon nucleus when the electron is in its lowest energy level n=1
For all parts, assume that the "island" refers to the point at a distance D from the point at which the package is released. Ignore the height of this point above sea level. Assume that the acceleration due to gravity is g = 9.80m/s^2. What is the..
An arrow is launched from a height of 1.21 m above the ground with an initial velocity of 48.3 m/s, What will be the maximum height the arrow will reach during its trajectory
Charge Q = 10E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Po..
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between mass 1 and teh ramp is 0.25. Evaluate the change in kinetic energy of the 50 kg block as it moves from a to b, a distance of 20 m
A bomb mass 7.2 kg goes off and splits into 3 pieces. The first piece has a mass of 1.1 kg and velocity of 9.5 m/s. What is the magnitude and direction of the velocity of the third piece
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