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A 50 newton horizontal force pushes a 10 kg mass sitting on a horizontal surface. Additionally the horizontal surface exerts a 25 newton frictional force on the mass. What is the acceleration of the mass?
Imagine two blocks before and after colision. Initially the left hand block of mass m1 = 2 kg is moving towards the right at v = 1 m/s. Determine whether the collision is elastic or inelastic
a light bulb has a resistance of 210 . it is connected to a standard wall socket 120 v rms 60.0 hz. a determine the rms
A long, straight wire runs along the y-axis. The wire carries a current in the positive y-direction that is changing as a function of time according to i = 8 A + (0.2 A/s)t. A loop of wire is placed in the xy-plane near the y-axis. The loop has di..
Calculate the rotational inertia of a meter stick, with mass 0.64 kg, about an axis perpendicular to the stick and located at the 18 cm mark
two waves traveling along a stretched string have the same frequency but one transports seven times the power of the
A cord is used to vertically lower an initially stationary block of mass m = 25 kg at a constant downward acceleration of g/8. Find the work done by the cord's force on the block
As a parallel-plate capacitor with circular plates 27 cm in diameter is being charged, Calculate the magnitude B of the magnetic field at a distance r = 75 mm from the axis of symmetry of this region
A bullet with a mass of 4.25g , traveling horizontally with a speed of 434m/s , is fired into a wooden block with mass of 0.786kg, What is the decrease in kinetic energy of the bullet
In a room are a wooden table, cloth covered chairs, a metal filing cabinet, and glass bottles. Which of these has a temperature (a) lower than the surrounding air, (b) greater than the surrounding air, and (c) equal to the surrounding air? Explain..
Write down an expression for the mass of the nucleus
A new event has been proposed for the Winter Olympics. An athlete will sprint 100 m, starting from rest, then leap onto a 18 kg bobsled. How far will Lisa compress the spring
The International Space Station orbits at an average height of 350 km above sea level. Determine the acceleration due to gravity at that height, and find the orbital velocity and period of the space station? The Hubble Space Telescope orbits at 60..
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