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A wheel of radius 1.5m rotates at a constant angular velocity. A point at the edge of the wheel experiences centripetal acceleration of 1.2m/s^2. What is the linear speed of that point?
A sample of ore containing radioactive strontium9038Sr has an activity of 7.6 x 105 Bq. How many grams of strontiumare in the sample
a point mass, initially at rest, is released at a distance of 1.5e10m from the center of a neutron star whose mass is 3e30 kg. What is the initial acceleration of the point mass
a particle has a de broglie wavelength of 2.7x10-10 m.then its kinetic energy doubles.what is the particles new de
A black wood stove with surface area 4.6 \rm{ m^2} is made from cast iron 4.0 \rm mm thick. The interior wall of the stove is at 650 \rm { ^\circ C}, find how much heat the stove loses by a combination of conduction and convection in the surroundin..
A beam of light in air is incident on the surface of a slab of fused quartz. What is the angle between the reflected ray and refracted ray
When the galvanometer in a wheatstone bridge circuit shows no deflection, explain why are the voltages across opposite branches on each side of the galvanometer necessarily equal?
A potential difference of 4.80 V will be applied to a 43.00 m length of 18-gauge copper wire (diameter = 0.0400inches). Calculate the current. Calculate the current density. Calculate the electric field. Calculate the rate at which thermal energy wil..
An emf is induced in a conducting loop of wire1.30 {\rm m}long as its shape is changed from square to circular. Find the average magnitude of the induced emfif the change in shape occurs in 4.37 {\rm s}and the local 0.127-{\rm T}magnetic field is ..
A large storage tank, open at the top and filled with water, develops a small hole in its side at a point 16.4 m below the water level. Determine the diameter of the hole
As part of a safety investigation, two 1400 cars travelling at 18 are crashed into different barriers. Find out the average forces exerted on (a) car that hits a line of water barrels and takes 1.8 to stop, and (b) car that hits a concrete barrier an..
find the total mechanical energy of a mass-spring system with m 1.30kg and maximum speed 0.750
Choose the correct explanation for why you can determine the maximum load given that theta_min is the minimum angle crane arm can make with the horizontal.
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