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A cart is attached to a hanging mass by a string that passes over a pulley. When the cart moves on an incline at constant speed, it is in equilibrium; i.e., the net force on it is zero.
Write an equation for the work done by friction when the cart is moving up the track at constant speed.
If a projectile is launched vertically from the Earth with a speed equal to the escape speed, how far from the Earth's center is it when its speed is 1/6 of the escape speed
a circular arc has a uniform linear charge density of -7 ncm. the value of the coulomb constant is 8.98755 109 nm2 c2.
a model rocket is constructed with a motor that can provide a total impulse of 36.0 nmiddots. the mass of the rocket
if a car stops suddenly you feel thrown forward. wed like to understand what happens to the passengers as a car stops.
A 1.5-kg mass attached to spring with a force constant of 20.N/m oscillates on a horizontal, frictionless track. At t=0, the mass is released from rest at x=10.0 cm (That is, the spring is stretched by 10.00cm)
The resistance of a silver wire is to be calibrated for low-temperature measurements. A silver wire with a resistance of 1.15, what is the expected resistance of the silver wire at -196 °C
A very long, thin straight line of charge has a constant charge density of 20 pC/cm. How far does the electron go before it comes back
Two 5.5-kg balls, each with a radius of 0.10 m, are in contact with one another. What is the gravitational attraction between the balls?
A pressure difference of 6.00 x 10^4 Pa is required to maintain a volume flow rate of 0.800 m^3/s for a viscous fluid flowing through a section of cylindrical pipe that has radius 0.180m
Suppose that a 1800 kg car passes over a bump in a roadway that follows the arc of a circle of radius 20.8 m, What force does the road exert on the car as the car passes the highest point of the bump if the car travels at 40.0 km/h
the electron and proton of a hydrogen atom are separated on the average by a distance of approximately 5.3 x 10-11 m.
A 1.00 x 102-g mass of tungsten at 100.0°C is placed in 2.00 x 102 g of water at 20.0°C. The mixture reaches equilibrium at 21.6°C. Compute the specific heat of tungsten.
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