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The length of a beam increases by 1.26mm when its temperature is raised from 29.87oC to 71.49 oC. What is the length of the beam at the initial temperature
A drunk driver in a 1700 kg car plows into a 1300 kg parked car with its brake set. how fast was the drunk going just before the collision
A 690 g wood block is at rest on a frictionless table, when a 27 g bullet is fired into it. what was the original speed of the bullet
A sinusoidal traveling water wave has a wavelength of 25 cm and a frequency of 0.60 Hz. What is the phase speed of this wave
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 4.95 m/s2 over a distance of 21.6 cm. Find the total time the block is in motion
Oxygen gas having a volume of 1180 cm3 at 47.3°C and 1.00 x 105 Pa expands until its volume is 1900 cm3 and its pressure is 1.08 x 105Pa. determine the final temperature of the sample
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.70, Find the minimum area of the capacitor plates
The half-life of iodine-131, an isotope used in the treatment of thyroid disorders, is 8.04 days. what is the activity of the sample
Two violins are supposed to be playing concert A, at 440 Hz [{\rm Hz}], What beat frequency do the violinists hear
If the column is 2.30m in length before being stressed, what is the decrease in length
A 180-turn circular coil has diameter 5.35cm and resistance 1.25?. obtain the induced current in the coil
A drug prepared for a patient is tagged with 9943Tc, which has a half-life of 6.05 h. What is the decay constant of this isotope
The barrel of a compound microscope is 13.0 cm in length. The specimen will be mounted 1.00 cm from the objective, Determine the focal length of the objective lens
A swimming pool has dimensions 32.0 m ? 12.0 m and a flat bottom. The pool is filled to a depth of 2.30 m with fresh water. What is the force exerted by the water on the bottom
Ikjoo Yoo of the Tampa Bay Lightning has had his slap shot clocked at 102.1 mph (45.64 m/s). How much momentum is lost in the collision
Microwave ovens emit microwave energy with a wavelength of 12.6 cm. What is the energy of exactly one photon of this microwave radiation
An air-track glider attached to a spring oscillates between the 12.0cm mark and the 61.0cm mark on the track. find maximum speed of the glider
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein
one type of electromagnetic radiation has a frequency of 107.1 MHz another type has a wavelength of 2.12*10^-10m,and another type ofelectromagnetic radiation has photons with energy equal to 3.97*1
The electrical power output of a large nuclear reactor facility is 890 MW. It has a 34.0% efficiency in converting nuclear power to electrical. What is the nuclear power output in megawatts
If the average molecular mass of compounds in food is 47.5, how many molecules are there in 1.00 kg of food, Find the ratio of ion pairs to molecules
If 36.6 grams of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) react with 35.6 grams of oxygen gas (O2, MM = 32.00 g/mol), what is the mass of sulfur dioxide (SO2, MM = 64.06 g/mol) gas produced
A 116 g Frisbee is 28 cm in diameter and has about half its mass spread uniformly in a disk, and the other half concentrated in the rim. What is the rotational inertia of the Frisbee
a certain element has only two naturally occurring isotopes one with 18 neutrons and the other with 20 neutrons. the element forms 1 charged ions when in ionic compounds. predict the identity of the
A 3.0 kg block rests on a 30° slope and is attached by a string of negligible mass to a solid drum of mass 0.80 kg, What is the coefficient of friction between block and slope