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James pushed his 2-kg toy truck across the kitchen floor with a force of 2 N. If the floor provides 0.15 N of friction, how much will the truck accelerate? Show your work and include formula(s) and units.
A uniform plank, 10.0 m long and weighing 200 N, is supported horizontally by a brick at one end and an egg at the other. What is the force exerted on the plank by the brick
Suppose an object is placed at the edge of a recordplayer. The record player has a diameter 30.0cm and rotatesat 33.3 RPM (revolutions per minute). How fast is the outside edge of the record moving
A piano tuner stretches a steel piano wire with a tension of 800 N. The steel wire is 0.400 m long and has a mass of 3.00 g, What is the frequency of its fundamental mode of vibration
A small rectangular loop of wire is located close to a long straight wire initially carrying a current I = 91 A (see figure below). Discover the average emf induced in the loop if the current in the wire reverses direction in a time interval of
Draft Hypothesis and Design
A 800 kg rocket sled can be accelerated at a constant rate from rest to 1300 km/h in 2.4 s. What is the magnitude of the required net force
Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 2.10 m long conducting wire. Determine the tension in the wire
A 1 kilograms standard cart collides on a low-friction track with cart A. What is the inertia of the putty
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
In the Bohr model of the hydrogen atom, an electron moves in a circular path around a proton. The speed of the electron is approximately 2.19 106 m/s. Find the centripetal acceleration of the electron
A 50.0 kg child stands at the rim of a merry-go-round of radius2.05 m, rotating by an angular speed of 3.25 rad/s. What minimum coefficient of static friction is required? What is the child's centripetal acceleration?
A uniform electric field of magnitude 604 N/C exists between two parallel plates that are 3.68 cm apart. Determine the distance from the positive plate
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