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Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.9e10^6 N, one at an angle 12.0 degrees west of north.
The coefficient of kinetic friction is mu_k. During time interval t, the sled moves a distance s, starting from rest.
What is the angle of incidence of the ray that is just totally internally reflected at the core-cladding interface?
A 1.5-kg box that is sliding on a frictionless surface with a speed of 12 m/s approaches a horizontal spring. The spring has a spring constant of 2000 N/m.
What is the speed of the roller coaster at the bottom of the first hill? (when the coaster is 15m above ground level).
A 6.0 kg block is pushed 8.0 m up a rough 37 degree inclined plane by a horizontal force of 75N. If the initial speed of the block is 2.2m/s up the plane.
The crate has a mass of 150 kg and rests on a surface for which the coefficients of static and kinetic friction are us= 0.3 and uk = 0.2 respectively.
A 1-cm3 air bubble at a depth of 419 meters and at a temperature of 4 oC rises to the surface of the lake where the temperature is
A cylinder with initial volume V contains a sample of gas at pressure p. The gas is heated in such way that its pressure is directly proportional to its volume.
A layer of transparent plastic (n = 1.59) on glass (n = 1.52) looks dark when viewed in reflected light whose wavelength is 570 nm in vacuum.
How will the kinetic energy change? How will the gravitational potential energy change? How will the mechanical energy change?
When blue light (wavelength 589nm)is reflected from an air wedge formed by two flat glass plates, the bright fringes are 0.6cm apart.
Petroleum flows along a 10-cm diameter pipeline at a speed of 2.0 m/s. Determine the flow rate, assuming the liquid is ideal.
They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.41 x 10-11m.
The sound travels through the left tube LXM, which has a fixed length. Simultaneously, the sound travels through the right tube LYM
If the work required to speed a car up from 10 km/h to 20 km/h is 5.0 x 10^3 J, what would be the work required to increase the car's speed.
A solid cylinder of mass 8kg and diameter 20cm is rotated about an axis parallel to its central axis at a distance of 10 cm from the cylinder.
The sound produced by a loudspeaker has a frequency of 12,000 Hz and arrives at the microphone via two different paths
The center of mass of three objects is located at (1,0). One object with a mass of 5 kg is at (-2,-1) and a second object with a mass of 2 kg is at (0,0).
A 90g bullet is fired from a rifle having a barrel 0.690m long. Assuming the origin is placed the bullet begins to move, the force (in newtons) exerted.
A steam turbine takes in steam at the rate of 6000 kg hour^-1 and its power output is 800 kW. Neglect any heat loss from the turbine.
The De Broglie wavelengths of visible particles. Why does the wave nature of particles come as such a surprise to most people?
The object has a speed of vi = 3.50 m/s when it makes contact with a light spring that has a spring constant of k = 50.0 N/m.
Perform the following operations and write your answers with the appropriate number of significant figures
The two objects are placed 1 meter apart. For the force that each object exerts on the other to be a maximum, q should be: