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A cart of mass 1.4 Kg is temporarily held stationary on an incline at 9.5 degrees to horizontal. A mass of .16 Kg is attached to the cart by a string over a pulley located at the bottom of the incline; the mass hangs freely from the string. when the cart is released from rest, it accelerates through a distance of 3 meters. Assuming no friction or other dissiptive forces:
How much work does gravity do on the cart?
Using the definition of KE, determne the velocity attained by the cart.
A 7.80-g bullet moving at 560 m/s penetrates a tree trunk to a depth of 5.2 cm. Use work and energy considerations to find the average frictional force that stops the bullet
The current in a 100 watt lightbulb is 0.800 A. The filament inside the bulb is 0.220 mm in diameter. What is the current density in the filament
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you found in part A. What should be maximum speed of the car so it can round the curve safely?
Water flows at 5.0;{rm L}/{rm s} through a horizontal pipe that narrows smoothly from 10 cm diameter to 5.0 cm diameter. A pressure gauge in the narrow section reads 50 kPa. What does the other pressure gauge read.
The work function for aluminum is 4.08 eV. Find the cutoff wavelength for aluminum
At t=0 a grinding wheel has an angular velocity of 25 rad/s. It has a constant angular acceleration of 35.0 rad/s^2 until a circuit breaker trips at time t = 2.10 s. From then on, it turns by an angle 431 rad as it coasts to a stop at constant ang..
Determine the location at which the tuning is formed and the vibrating frequency of a string to form a standing wave pattern.
Interpreting attenuation as a reflection loss calculate the lower limit to the effective reflectivity at the core cladding boundary
a model rocket is shot straight up. shortly running out of fuel, the upward thrust on the rocket is 2 N, calculate the mass of the rocket
the absolute portential at the exact center of a square is 3.0v when a charge of +Q is located at one of the squares corners. What is the absolute potential at the squares center
A frictionless, vertical wire has two metal beads on it. The beads are held 30 cm apart by horizontal magnets, If the two beads each have a mass of 49.7 g, what is the kinetic energy of the second immediately after impact
A lump of putty with a mass of 0.550 kg and a speed of 0.750c collides head-on and sticks to an identical lump of putty moving with the same speed
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