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An atwood machine consists if a 1.020kg mass and a 1.000kg mass connected by a light string over a frictionless pulley. What is the acceleration of the system.
Estimate the minimum absolute pressure (in pascals) that can be developed at the inlet of a pump to avoid cavitation if the fluid is carbon tetrachloride at 20 celsius
The distance between two successive maxima of a transverse wave is 1.20m. Eight crests, or maxima, pass a given point along the direction of travel every 12.0s. calculate the wave speed.
a 30.7 cm long solenoid 1.30 cm in diameter is to produce a field of 0.365 t at its center. how much current should the
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. what is the mass of helium present
a 1000kg car experiences a total power of 150hp (horsepower) if it starts from rest what is the magnitude of the velocity of the car in miles per hour 10s later
Someone is pulling a suitcase through an airport at constant speed. The handle of the suitcase makes an angle of 55 degree with the horizontal. what is the pulling force being exerted by the person parallel to the handle
The box is cubical, measuring 0.350 m on a side, and the thickness of the walls is 3..00 x 10^-2 m. In one day, 3.10 x10^6 J of heat is conducted through the six walls. Find the thermal conductivity of the material from which the box is made.
A tornado in the shape of a cylinder with a diameter of 100 m has an axis of rotation through its center which is along the vertical direction. The sense of rotation is cyclonic (counterclockwise). The wind is purely rotational, with a wind speed ..
A drum of chemical waste has a lid with a radius of 35.0 cm. To open the thing, a torque of 367Nm is required. With what force must you work on the thing
A spinning object has a moment of inertia of 1.6 kg*m2. It is rotating at a rate of 1rad/s. If the moment of inertia increases to 3 kg*m2, what is the new rotational velocity
A 2540-kg test rocket is launched vertically from the launch pad. Its fuel (of negligible mass) provides a thrust force so that its vertical velocity as a function of time is given by v(t)=At+Bt2, What was the initial thrust due to the fuel
a hollow metal sphere has 7cm and 11cm inner and outer radii respectively. the surface charge density on the inside
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