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A shopper in a supermarket pushes a loaded cart with a horizontal force of 8 Newton. The cart has a mass of 35 kilogram.
(a) Find how far will it move in 5.0 second, starting from rest? (Ignore friction.).
(b) Find how far will it move in 5.0 second if the shopper places his 30 Newton child in the cart before he begins to push it?
Water(density=1.00X103 kg/m3) flows at10.0m/s through a pipe with radius 0.030m. What is the radius of the pipe on the second floor
You throw a 25.0 N rock into the air from ground level and observe that, when it is 14.0 m high, find the rock's speed just as it left the ground
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The velocity of an object undergoing linear drag and no other forces can be described as: v(t)=v0e^t/?, Calculate the position x(t), and acceleration a(t) of the particle as a function of time t
question1a spherical mirror is polished on both sides. when concave side is used as a mirror the magnification is 2.0.
two packages at ups start sliding down the 20degree ramp. package a has a mass of 5 kg and coefficient of friction of 0.20. how long does it take for package a to reach the bottom
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A collimated gamma ray beam consists of equal numbers of 0.1 MeV and 1.0 MeV photons. If the beam enters a 5 cm thick lead shield, what is the relative portion of 1 MeV photons to 0.1 MeV photons in the emergent beam? State the source of all values u..
A photon of wavelength 0.14795 nm, traveling due east, is scattered by an electron initially at rest. What is the velocity of the scattered electron
the magnitude of the force that a spring exerts f when it is stretched a distance x from its unstressed length is
A 25-ohm resistor, a 55-ohm resistor, and a 75-ohm resistor are connected in parallel and placed across a 9.0-V battery. What is the current through each branch of the circuit
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